Researcher Database
INASAWA Susumu
| ■Faculty | Institute of Engineering Division of Applied Chemistry | |||
| ■Position | Professor | |||
Last Updated :2025/04/11
Activity information
Name and contact details
Name
イナサワ ススム, 稲澤 晋, INASAWA SusumuE-mail
inasawa
cc.tuat.ac.jpExternal link
https://web.tuat.ac.jp/~inasawa/index.html
Affiliation / Position
Institute of Engineering Division of Applied Chemistry, Professor
Other affiliation
- Graduate School of Bio-Applications and Systems Engineering Department of Bio-Functions and Systems Science
Degree
Current state of research and teaching activities
- Reaction and drying are commonly-used processes in industrial production. Our main concern is formation kinetics of “solids” in these processes because large production rate generally degrades the quality of products. How to increase production rate of functional materials in an efficient way? That is our target. K. Yamaguchi, S. Inasawa and Y. Yamaguchi “Growth kinetics of needle-like silicon wires formed via the zinc reduction reaction of silicon tetrachloride.” Journal of Physical Chemistry C , 2012, 116, 19978-19983. S. Inasawa and Y. Yamaguchi “Self-organized pattern formation of cracks perpendicular to the drying direction of a colloidal suspension.” Soft Matter , 2012, 8, 2416-2422. N. Uesawa, S. Shen, S. Inasawa, A. Miyoshi and Y. Yamaguchi “Kinetic study on gas phase zinc reduction of silicon tetrachloride.” Chemical Engineering Journal , 2011, 168, 889-895.
Teaching Experience
- 物質エネルギーシステム特論II
2023, 専門科目等 - 物質エネルギーシステム特論I
2023, 専門科目等 - 化学工学実験
2023, 専門科目等 - 反応速度論
2023, 専門科目等 - ケミカルエンジニアリング基礎
2023, 専門科目等
Grants-in-Aid for Scientific Research
- 国際共同研究加速基金（国際共同研究強化(B)）（令和３(2021)以降採択分）
固体高分子電解質/電極界面設計技術を基盤とするフレキシブルLi金属二次電池の創出
From 2023, To 2023 - 基盤研究(B)
粒子濃縮層への重力作用を利用した「粒子充填のしやすさ」計測法の実証とミニチュア化
From 2023, To 2025 - 国際共同研究加速基金（国際共同研究強化(B)）
固体高分子電解質/電極界面設計技術を基盤とするフレキシブルLi金属二次電池の創出
From 2022, To 2022 - 基盤研究(B)
金属粒子内でのシリコン再結晶化を利用したナノワイヤー/バルク電極間の接合技術開発
From 2020, To 2022 - 基盤研究(A)
界面構造設計による高密度ナノ流体・ナノ構造体機能制御
From 2018, To 2018 - 挑戦的研究（萌芽）
シリコンナノワイヤー膜を用いた高効率な熱電変換への挑戦
From 2017, To 2019 - 若手研究(A)
微細なイガグリ構造を利用した酸化消光フリーのシリコン発光材料の開発
From 2017, To 2019 - 基盤研究(A)
界面構造設計による高密度ナノ流体・ナノ構造体機能制御
From 2017, To 2017 - 基盤研究(A)
界面構造設計による高密度ナノ流体・ナノ構造体機能制御
From 2016, To 2016 - 挑戦的萌芽研究
イガグリ構造を利用した酸化消光フリーのシリコン発光材料の開発
From 2015, To 2016 - 基盤研究(A)
界面構造設計した高機能化ナノ粒子の太陽電池デバイスへの応用
From 2013, To 2013 - 挑戦的研究（萌芽）
汎用溶媒を介した室温でのVapor-Liquid-Solid型結晶成長への挑戦 - 基盤研究(B)
金属粒子内でのシリコン再結晶化を利用したナノワイヤー/バルク電極間の接合技術開発
Papers
- How does the polymer type affect the rate of water evaporation from polymer solutions?
Masahiko Tanaka and Susumu Inasawa
Physical Chemistry Chemical Physics
19 Nov. 2024, Research paper (scientific journal), 27, DOI(公開)(r-map), 283, 290 - Evaporation-Induced Switching from Flocculated to Dispersed TiO2 Nanoparticles in Binary Solvents
Ryushi Fukuhara, Akio Nasu and Susumu Inasawa
Langmuir
11 Oct. 2024, Research paper (scientific journal), 40, DOI(公開)(r-map), 22424, 22432 - Propagation of Freezing in Supercooled Water-In-Antifreeze-Oil Emulsions
Hiiro Komatsu and Susumu Inasawa
Langmuir
16 Jul. 2024, Research paper (scientific journal), 40, 30, DOI(公開)(r-map), 15838, 15846 - Study on the Diffusion Coefficients of Molecules in Precursor Varnishes and Solid Polyimides for Understanding the Polyimide Curing Process
Ryo Kokubu, Natsuko Hara, Ayumi Yamamoto, Keiichi Tomizawa, Shingo Matsukawa, Susumu Inasawa, and Hidenori Ohashi
Industrial and Engineering Chemistry Research
Americal Chemical Society
07 Mar. 2024, Research paper (scientific journal), 63, 11, DOI(公開)(r-map), 4934, 4941 - Dynamic Homogenization of Inorganic UV Filters on the Skin for Enhanced UV Protection and Visual Transparency
Ryushi Fukuhara, Akio Nasu, Katsuyuki Hasegawa, Kuanting Lin, Susumu Inasawa
IFSCC Magazine
The International Federation of Societies of Cosmetic Chemists
26 Feb. 2024, Research paper (scientific journal), 26, 4 - Dynamics of drying colloidal suspensions, measured by optical coherence tomography
Kohei Abe, Patrick Saul Atkinson, Chi Shing Cheung, Haida Liang, Lucas Goehring and Susumu Inasawa
Soft Matter
13 Feb. 2024, Research paper (scientific journal), joint, 20, DOI(公開)(r-map), 2381, 2393 - Drying kinetics of colloid-polymer suspensions confined in a two-dimensional geometry
Masahiko Tanaka and Susumu Inasawa
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Elsevier
We investigated the drying behavior of aqueous colloid-polymer suspensions using three different polyvinyl alcohols (PVAs) of various molecular weights (Mws). The dissolved polymer molecules were transported and accumulated around the drying interface. The accumulation was more dominant in the smaller PVAs. A packed layer of particles formed during drying. The small molecules were able to permeate the voids in the packed particles more easily. The rate of water evaporation decreased dramatically as the concentration of dissolved PVA near the drying interface (Cedge) increased. Although the Cedge increased more rapidly when we used smaller PVAs, the rate of water evaporation was not affected by the Mw. The decrease in the rate of water evaporation was smaller from a polymer solution without colloidal particles than it was from the colloid-polymer suspen-sions. We conclude that the accumulation of dissolved polymer molecules in the narrow voids of packed particles impedes water evaporation during drying. The drying kinetics of the water disturbed by the PVAs in the packed particles will be discussed.
05 Sep. 2023, Research paper (scientific journal), joint, 672, 5, 0927-7757, DOI(公開)(r-map), 131693 - Spontaneous transfer of amphiphilic molecules from evaporating water to involatile oil and its effects on the rate of water evaporation
Katsuyuki Hasegawa and Susumu Inasawa
International Journal of Heat and Mass Transfer
PERGAMON-ELSEVIER SCIENCE LTD
We have investigated the evaporation kinetics of water through an involatile oil layer with amphiphilic molecules dissolved in both the water and oil phases. As water evaporated, the concentration of am-phiphilic molecules in the water phase increased, which induced spontaneous transfer of the amphiphilic molecules to the oil phase. The volume of the oil phase increased owing to the phase transfer, which caused a decrease in the rate of water evaporation. However, the evaporation flux of water was not ex-plained by only the thickness of the oil layer, and the amount of dissolved amphiphilic molecules in the oil phase also affected the evaporation flux. We propose that the amphiphilic molecules in the oil phase affected transport of water molecules through the oil layer because there would be a strong inter-action between the amphiphilic molecules and water molecules in the oil phase. A simple mathematical model based on retarded diffusion reasonably explained the experimental data. Phase transfer of the amphiphilic molecules is important to understand the evaporation kinetics of water in phase-separated solutions, such as emulsions. The kinetics of water evaporation and the compositions of the amphiphilic molecules compared with those at equilibrium are discussed.(c) 2023 Elsevier Ltd. All rights reserved.
Jul. 2023, Research paper (scientific journal), joint, 208, 0017-9310, DOI(公開)(r-map) - Position-dependent rates of film growth in drying colloidal suspensions on tilted air-water interfaces
Kohei Abe and Susumu Inasawa
Physical Chemistry Chemical Physics
ROYAL SOC CHEMISTRY
Suspended particles in a solvent form a packed film when the solvent evaporates. We investigated film growth rates in a narrow channel on a tilted drying interface and observed clear differences in the rates of film growth. Films grew faster at one end and slower at the other; thus, the slope of the packing front, i.e., the boundary between the packed film and the drying suspension, changed as drying proceeded. However, the difference in film growth rates became smaller as the slope of the packing front changed and the rates of film growth at the either end ultimately became identical. We found that the differences in the rates of film growth were proportional to cos theta, where theta is the angle defined by the slope of the packing front. We constructed a mathematical description to successfully express the time evolution of both the difference in the growth rates and the packing front angle theta. Relationships between drying-induced flow of bulk suspensions and transport of suspended particles to the tilted packing front are discussed.
15 Jun. 2023, Research paper (scientific journal), joint, 25, 23, 1463-9076, DOI(公開)(r-map), 15647, 15655 - Flow Effects on the Morphology of Silicon Materials Produced in a Gas Phase Reaction of SiCl4
Susumu Inasawa
Iternational Chemical Engineering Symposia Proceedings (IChES2022)
15 Mar. 2023, Research paper (international conference proceedings), DOI(公開)(r-map) - Effects of liquid-liquid interfaces on flow of oil-in-water emulsions in a capillary tube
Chisato Tajima and Susumu Inasawa
Chemical Engineering Science
PERGAMON-ELSEVIER SCIENCE LTD
We examine the flow of oil-in-water emulsions in a capillary tube with various sizes and volume frac-tions of the oil droplets. The front position of flowing emulsions can be accurately described by a power law formula of the form x(0)(t/t(0))(n), in which x(0) is a constant and (t/t0)n is a dimensionless time to the nth power. Both x(0) and n depend on the sample and on the diameter of the capillary tube. We reveal that the ratios of the oil-water interfacial area to water volume (So-w/V-w) and water-wall interfacial area to water volume (Sw-w/V-w) are important factors in describing x0. For the various samples, the values of x(0) are lar-gely determined by So-w/V-w and Sw-w/V-w in combination with x(0_0 vol), which is the value of x(0) in a sample with no oil droplets. In contrast, n is primarily determined by So-w/V-w. Finally, the role of the liquid-liquid interfacial area is discussed.(C) 2021 Elsevier Ltd. All rights reserved.
15 Mar. 2022, Research paper (scientific journal), joint, 250, 0009-2509, DOI(公開)(r-map), 117394 - How do drying methods affect quality of films? Drying of polymer solutions under hot-air flow or infrared heating with comparable evaporation rates.
Taiki Kinnan, Yoshio Kondo, Michiro Aoki and Susumu Inasawa
Drying Technology
Wrinkles formed during the drying of polymer films by hot-air flow but not when drying by infrared irradiation, even though drying rates were comparable. The top surface was hotter than the bottom during hot-air drying. Conversely, the temperatures of the top and bottom surfaces were very similar when drying by infrared irradiation. We also examined uniform heating with faster and slower drying rates using drying with combined infrared irradiation and air flow (hot or room temperature). Wrinkles formed in both cases. This demonstrated the negative effect of air flow. Features and mechanism of each drying method are discussed.
01 Feb. 2022, Research paper (scientific journal), joint, 40, 0737-3937, DOI(公開)(r-map), 653, 664 - Deformation and coalescence of particle-stabilized oil droplets in drying aqueous NaCl solutions
Kohei Abe and Susumu Inasawa
Colloids and Surfaces A: Physicochemical and Engineering Aspects
Elsevier
The effects of ion concentration on the deformation and coalescence of particle-stabilized oil droplets dispersed in water were investigated. We emulsified a mixture of oil and an aqueous solution of silica particles with various NaCl concentrations ranging from 0 M to 3 M. Oil droplets were spontaneously compressed by evaporation of the water phase. At low ion concentrations ( 0.1 M), the droplets were tightly packed and deformed into polygonal shapes, before coalescing in the final stage of water drying. The flexible deformation of the oil droplets suggested liquid-like oil-water interfaces, even though they were stabilized by adsorbed solid particles. Conversely, tight packing of the droplets was not observed at high ion concentrations ( 0.1 M); however, they coalesced more readily and formed larger ellipsoidal droplets. The coalesced droplets did not relax to a spherical shape. We observed the formation of large aggregates of the silica particles in the water phase at high ion concentrations. This suggested that aggregates of particles adsorbed on the oil-water interfaces and this would be closely related to solid-like oil-water interfaces. In contrast, the particles were well dispersed in the water phase at low ion concentrations because of repulsive forces between the particles. Thus, the adsorbed particles on the oil-water interfaces did not form solid-like particulate shells and the interfaces remained liquid-like. We also confirmed that an increase or decrease in ion concentration, even after formation of particle-stabilized oil droplets, resulted in the same interface responses. The ion concentration affected adsorbed silica particles and was a dominant factor for the interfacial properties of particle-stabilized oil droplets in the water phase.
02 Jan. 2022, Research paper (scientific journal), joint, 632, 0927-7757, DOI(公開)(r-map), 127816 - Scaling law for the kinetics of water imbibition in polydisperse foams
Tsuritani, Kanoko; Inasawa, Susumu
RSC ADVANCES
ROYAL SOC CHEMISTRY
We investigated the kinetics of water imbibition in polydisperse foams. We used a Hele-Shaw cell, and horizontal imbibition was observed for a timescale of up to 10(3) s in which the gravity effect was negligible. While several papers have reported kinetics for imbibition in foams, imbibition kinetics in polydisperse foams and its variations in longer timescales are not well understood. The tip position of imbibition was proportional to the square root of time in the initial stage of imbibition, but it showed plateauing in the late stage of imbibition. We evaluated the proportional constant A in the initial stage of imbibition as a kinetic constant for the time-dependent increase in the tip position, which showed a clear dependency on the initial and final water volume fractions in the foams. Conversely, the mean initial radius of the curvature and the channel length in the Plateau borders did not show any clear correlations with A, although both valuables are frequently used in modeling for liquid imbibition in foams. On the basis of the t(1/2) dependence, the correlation of A with the water volume fraction and the increase in the water volume fraction during imbibition, we proposed a simple equation to describe the tip position over the entire period of imbibition. We used them to scale all of the experimental data, which showed good agreement with the theoretical line. This clearly showed that the water volume fraction in the foams during imbibition was the key factor to quantitatively describe the rate of water imbibition. Features in the kinetics of imbibition were discussed.
08 Oct. 2021, Research paper (scientific journal), joint, 11, 52, DOI(公開)(r-map), 33093, 33101 - Recent Studies on Drying-Related Phenomena: Compression, Formation of Solid Films, Deformation of Interfaces and Generation of Spontaneous Flows in Drying Suspensions.
Susumu Inasawa
Journal of the Japan Society of Colour Material
一般社団法人 色材協会
20 May 2021, Research paper (scientific journal), only, 94, 5, DOI(公開)(r-map), 133, 139 - Buckling and Drying Kinetics of Particle-Stabilized Water Droplets Fully or Partially Immersed in an Oil Layer
Abe, Kohei; Inasawa, Susumu
LANGMUIR
AMER CHEMICAL SOC
We have investigated the effect of buckling of particle-stabilized water droplets on the drying kinetics. Particle-stabilized water droplets in an oil phase were prepared and the shrinking modes of the droplets during drying were controlled by the wettability of the particles. We obtained water droplets with and without buckling and used them in drying experiments. The drying times were comparable when the droplets were fully immersed in a thick oil layer. However, when the thickness of the oil layer was smaller than the droplet diameter, the buckled droplets showed faster drying. Observation of the reflection images around the droplets suggested that the buckled droplets preferentially shrank in the height direction, while the droplets without buckling isotropically shrank. Mathematical models that assumed diffusion of dissolved water molecules in the oil layer showed good agreement with the experimental data. The effective water-oil interfacial area was constant in the buckled droplets, whereas it shrank in the droplets without buckling. This would be a reason for the faster drying of the partially immersed buckled droplets. Particulate shells on liquid droplets could be used to enhance droplet drying.
12 Jan. 2021, Research paper (scientific journal), joint, 37, 1, 0743-7463, DOI(公開)(r-map), 219, 229 - Evaporation kinetics of continuous water and dispersed oil droplets
Hasegawa, Katsuyuki; Inasawa, Susumu
SOFT MATTER
ROYAL SOC CHEMISTRY
Drying of volatile oil droplets immersed in a continuous water phase was observed and analysed. Drying sample solutions were sandwiched between two glass plates and the water and oil phases were observed by confocal microscopy. In the initial stage of drying, evaporation of water was dominant and drying of the oil droplets was negligible. However, the rate of water evaporation decreased when the oil droplets were compressed. Comparison of experimental data with a diffusion model of water vapour showed that the decline in drying rates occurred earlier in the experiment than in the theoretical prediction. This implies that compression and narrowing of water paths caused the decline in the rate of water evaporation. After most water had evaporated, evaporation of the oil droplets occurred. The oil droplets did not shrink isotropically and the air-liquid interface invaded into the drying oil droplets. Cross-sectional observation byz-scanning revealed direct exposure of the oil droplets and they were pinned by the residual water phase. The water network between the oil droplets collapsed after the oil droplets had evaporated. The correlation between changes in structures and drying kinetics in both liquid phases was discussed.
07 Oct. 2020, Research paper (scientific journal), joint, 16, 37, 1744-683X, DOI(公開)(r-map), 8692, 8701 - Formation of boron-doped silicon wires and control of dopant concentration using zinc, SiCl4 and BCl3
Taniguchi, Ryunosuke; Inasawa, Susumu
JOURNAL OF CRYSTAL GROWTH
ELSEVIER
We synthesized boron-doped silicon wires (whiskers) in a gas phase reduction reaction of SiCl4 with zinc vapor. BCl3 was introduced into the reactor as a boron source, and we varied the concentration ratio of B/Si in the gas phase. The formed wires had an electrical resistivity in the range of 10(-3) to 10(1) Omega cm, depending on the ratio of BCl3 to SiCl4 in the gas phase. The ratio of B/Si in the silicon wires was not directly proportional to that in the gas phase, suggesting a non-linear incorporation process of dopant during the vapour-liquid-solid growth. Comparison of our data with published studies using gold catalysts to form doped semiconductor nanowires showed a lower incorporation efficiency of dopant atoms from the gas phase when using the zinc catalyst in vapour-liquid-solid growth.
01 Oct. 2020, Research paper (scientific journal), joint, 547, 0022-0248, DOI(公開)(r-map), 125796 - Drying-induced back flow of colloidal suspensions confined in thin unidirectional drying cells
Inoue, Kai; Inasawa, Susumu
RSC ADVANCES
ROYAL SOC CHEMISTRY
A clear back flow was observed in the thin unidirectional drying cell of a colloidal suspension. Flow around the colloidal-particle packing front was more complex than expected, even though a colloidal suspension was confined in a narrow space with a submillimeter-scale or shorter gap height. We propose that an increase in particle concentration around the packing front induces downward flow, which is the origin for back flow inside the cell. A mathematical model, which considered both a drying induced horizontal flow and a circulation flow caused by a concentration gradient of particles, showed a reasonable agreement with experimental data for the width of the back-flow region. The concentration gradient of particles was not negligible and it generated a rather complicated flow even in a thin drying liquid film.
22 Apr. 2020, Research paper (scientific journal), joint, 10, 27, DOI(公開)(r-map), 15763, 15768 - Packing structures of colloidal silica particles formed by drying condensed suspensions
Miyazaki, Hayato; Abe, Kohei; Inasawa, Susumu
DRYING TECHNOLOGY
TAYLOR & FRANCIS INC
We investigated the packing structures of silica particles formed by drying colloidal suspensions with various particle volume fractions. We observed many packing domains with different orientations in a film formed from drying a 10 vol% suspension. These domains showed birefringence and were observed as different color domains in optical microscopy images. The size of the packing domains decreased as the initial particle fraction increased. The domains formed immediately after the packing of particles. We propose that the kinetic arrest of particles due to the interaction between particles was one of the main factors determining the size of the packing domains.
17 Feb. 2020, Research paper (scientific journal), joint, 38, 3, 0737-3937, DOI(公開)(r-map), 385, 394 - Positive and negative birefringence in packed films of binary spherical colloidal particles
Inoue, Kai; Inasawa, Susumu
RSC ADVANCES
ROYAL SOC CHEMISTRY
We have investigated the birefringence in packed films of binary spherical colloidal particles. Particulate films were obtained by drying a mixed suspension of colloidal particles with two different diameters. We observed positive and negative birefringence depending on the diameters and volume ratios of the large and small particles. When the diameters of the large and small particles were similar, the films showed positive birefringence. However, negative birefringence or weakening of positive birefringence was observed in films with a large diameter ratio and an optimal volume fraction of large particles. The large particles were embedded in packed small particles in the negative and weakened positive birefringent films. We propose a packing structure in which a single shell layer of small particles formed around a large particle. Using this model, we estimated the required volume ratio of large particles, and it was in good agreement with the optimal volume fraction. The relation between the packing structure of the binary colloidal particles and the birefringence is discussed.
15 Jan. 2020, Research paper (scientific journal), joint, 10, 5, DOI(公開)(r-map), 2566, 2574 - Experimental and numerical approaches on the effect of gas flow on the formation of tens-square-cm-scale mat of silicon nanowires from SiCl4 and zinc vapor
Inasawa, Susumu; Inoue, Kai
JOURNAL OF CRYSTAL GROWTH
ELSEVIER SCIENCE BV
We have synthesized a mat of silicon nanowires (approx. 10 mg in weight and 20 cm(2) in size) via the zinc reduction of silicon tetrachloride. The mat consisted of smooth and long nanowires with a median diameter (d(50)) of 40 nm. The flow pattern of gas inside the reactor that was used to form the mat significantly affected the formation of nanowires, even though conditions such as temperature or flow rates were fixed. In the best flow pattern, nanowires preferentially formed on a fixed position in the reactor and the mat gradually thickened as the reaction time increased. Computational fluid dynamic (CFD) simulations revealed that both a slow circulation flow of gases and a reaction front formed around the best position in the reactor, which resulted in the largest yield. This suggested that the reaction gases required a longer residence time for the preferential formation of the nanowires. The mechanism of this selective nanowire formation is discussed.
15 Aug. 2019, Research paper (scientific journal), joint, 520, 0022-0248, DOI(公開)(r-map), 11, 17 - Flow of condensed particles around a packing front visualized by drying colloidal suspensions on a tilted substrate
Mizuguchi, Takuho; Inasawa, Susumu
SOFT MATTER
ROYAL SOC CHEMISTRY
A gravity effect was demonstrated for 10 nm particles drying in colloidal suspensions. The particles were well-dispersed and did not sediment. However, when a suspension was dried on a tilted directional cell, a clear downward flow of particles was observed around the packing front, which was the boundary between the packed particles layer and the suspension. Three particle sizes (10-110 nm) were examined, with the most pronounced effect being on the 10 nm particles. The primary origin of the downflow was attributed to condensation of particles near the packing front and the subsequent increase in the overall density of the condensed layer. Because of the flow, the packing front was not parallel to the drying interface and tilted cracks formed in the packed layer. A mathematical model was proposed that considered conservation of the suspended particles in the condensed layer. Three competing factors of particle transport (advection, particle consumption by packing, and particle transport by the downward flow) were used to explain the experimental results. Overall, the results suggested that simple substrate tilting would be useful to evaluate whether suspended particles are easily packed or not during drying.
21 May 2019, Research paper (scientific journal), joint, 15, 19, 1744-683X, DOI(公開)(r-map), 4019, 4025 - Packing structures and formation of cracks in particulate films obtained by drying colloid-polymer suspensions
Koga, Shintaro; Inasawa, Susumu
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
ELSEVIER
We investigated the effects of polymer addition on crack formation in particulate films of colloidal silica. Two types of polyvinyl alcohol (PVA) with different degrees of saponification were compared. Partially saponified PVA (PVA1) suppressed crack formation. In contrast, weaker suppression was observed when we used fully saponified PVA (PVA-2). Centrifugation experiments of colloid-polymer suspensions revealed that PVA-1 adsorbed on particles well whereas PVA-2 was not adsorbed effectively, suggesting that the polymer-particle interactions strongly depended on the content of polymer functional groups. In addition, we observed segregation of PVA-2 between packed particles, which contributed to a sparse packing structure. We did not observe such segregation of PVA-1 and particles were packed more tightly than for PVA-2. These results clearly showed that the affinity between polymer molecules and suspended particles affected both crack formation and packing structures. We also found that adsorption of polymer molecules did not necessarily suppress crack formation. When we added polyvinyl pyrrolidone (PVP) to silica suspensions, we observed much more cracks than in the sample without polymer even though PVP molecules adsorbed on the silica particles. We conclude that adsorption of polymer molecules on suspended particles is preferable, but does not necessarily suppress crack formation. Miscibility between polymer molecules and particles would be a key issue in crack formation and packing structure of colloid-polymer films.
20 Feb. 2019, Research paper (scientific journal), joint, 563, 0927-7757, DOI(公開)(r-map), 95, 101 - Formation of thicker silicon wires on a sufficiently cooled substrate during the gas phase zinc reduction reaction of SiCl4
Shirane, Naoki; Inasawa, Susumu
JOURNAL OF CRYSTAL GROWTH
ELSEVIER SCIENCE BV
In this study, we demonstrate that thick silicon whiskers (wires) formed on a sufficiently cooled substrate. We used the gas phase zinc reduction reaction of SiCl4 at a gas reaction temperature of 910 degrees C. Wires formed via the tip-growth mode in the vapor-liquid-solid mechanism. When the substrate was the same temperature as the gas phase, the formation of multiple wires from a single point was observed. Conversely, this multiple formation was not observed, and thicker wires formed, on the sufficiently cooled substrate. We propose that splitting of a zinc catalytic droplet into several smaller ones is one of the main reasons for the formation of multiple wires. Suppression of this splitting on the cooled substrate was considered to be a main reason for the formation of thicker wires. We conducted a numerical approach to predict temperature profiles along a growing wire, because the growth rate of wires was about 5 mm min(-1) and heating owing to the release of the latent heat for solidification was not negligible. Three processes, the conduction in a wire, the convection to the surrounding gas and the radiation via the surface of wire, were considered. We also considered the heating of the growing tip due to solidification as well. Our simulation revealed that the tip temperature of a rapidly growing wire increased and was higher than that of the substrate. The effect of substrate temperature and subsequent temperature profile for a growing wire was discussed.
15 Jan. 2019, Research paper (scientific journal), joint, 506, 0022-0248, DOI(公開)(r-map), 171, 177 - A quantitative study of enhanced drying flux from a narrow liquid-air interface of colloidal suspensions during directional drying
Abe, Kohei; Inasawa, Susumu
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
ROYAL SOC CHEMISTRY
We evaluate an enhancement of the drying flux from a narrow drying interface. We examine drying of colloidal suspensions in a directional drying cell with various combinations of width and height to change the area of the drying interface. The drying flux changes depending on the height or width of the drying interface. A simple scaling law describes the experimental data quantitatively. Using this effect, we systematically change the drying flux and analyze the formation kinetics of particulate films. There is a threshold drying flux for immediate film formation after the beginning of drying. In addition, the threshold drying flux depends on the initial volume fraction of particles. A kinetics model based on the conservation of particles explains the threshold well.
07 Apr. 2018, Research paper (scientific journal), joint, 20, 13, 1463-9076, DOI(公開)(r-map), 8935, 8942 - Drying kinetics of water droplets stabilized by surfactant molecules or solid particles in a thin non-volatile oil layer
Miyazaki, Hayato; Inasawa, Susumu
SOFT MATTER
ROYAL SOC CHEMISTRY
We have investigated drying of water droplets stabilized by solid particles or surfactant molecules in a thin oil layer. The surfactant-stabilized droplets isotropically shrink, whereas the droplets stabilized by spherical particles severely deform during drying because of buckling of the particulate shells. However, buckling of the shells hardly affects droplet drying. The drying times for complete evaporation are almost the same for water droplets with the same initial diameter and the drying time is independent of the type of surface stabilizer (particles or surfactant). The drying kinetics of the water droplets is well described by mathematical models, in which diffusion of water molecules in the oil phase to the oil-air interface is proposed as the rate-determining process. Droplets with a diameter comparable with the thickness of the oil layer shrink faster than small droplets because of the short diffusion length from the water droplets to the oil-air interface. We also investigated drying of water droplets stabilized by plate-like mica particles. The droplets also buckled but larger shells of mica particles remained compared with those of spherical particles. In addition, a longer drying time is necessary for some droplets stabilized by mica particles. These results indicate the possible effect of the particle morphology on the buckling and drying kinetics of particle-stabilized water droplets.
Dec. 2017, Research paper (scientific journal), joint, 13, 47, 1744-683X, DOI(公開)(r-map), 8990, 8998 - Kinetics in directional drying of water that contains deformable non-volatile oil droplets
Hasegawa, K.; Inasawa, S.
SOFT MATTER
ROYAL SOC CHEMISTRY
Herein, we report assessments of the kinetics in directional drying of water that contains non-volatile oil droplets, based on direct observations using a confocal microscope. The water was found to evaporate at a constant rate during the initial stage of drying, after which the evaporation rate decreased. The dispersed oil droplets were compressed and distorted as the surrounding water was lost. Further evaporation of water resulted in coalescence of the oil droplets, with the eventual formation of an oil layer at the drying interface. However, it was apparent that the drying rate decreased even before the formation of this oil layer. We propose that the restricted transport of water via the narrow paths between the distorted oil droplets was responsible for the decreased drying rate. A mathematical model based on foam drainage theory is proposed and describes the experimental data very well. This work also determined that the critical disjoining pressure for the oil droplets is affected by the drying rate, such that higher pressure values are associated with slow drying conditions. The drying kinetics and stability of the dispersed oil droplets are discussed.
Oct. 2017, Research paper (scientific journal), joint, 13, 39, 1744-683X, DOI(公開)(r-map), 7026, 7033 - Cross-sectional analysis of the core of silicon microparticles formed via zinc reduction of SiCl4
Inasawa, Susumu; Ono, Yamato; Mizuguchi, Takuho; Sunairi, Akinobu; Nakamura, Shin-ichi; Tsuji, Yoshiko; Yamaguchi, Yukio
CRYSTENGCOMM
ROYAL SOC CHEMISTRY
Silicon microparticles were formed by reduction of silicon tetrachloride by zinc. Chemical etching of these microparticles produced microparticles with a unique trench structure that showed visible photoluminescence. While we have previously reported the radially developed crystalline structure inside the as-synthesized microparticles, their crystalline structure was not clearly understood. In this study, we directly observed the cross sections of microparticles using a transmission electron microscope. We revealed the existence of a core inside the microparticles. The core showed a well-ordered electron diffraction pattern, which was readily explained by five single crystals rotated by 72 degrees each. We also found that the observed radial lines and bands in the microparticles were caused by dislocations, mainly along the {111} planes. We consider that preferential etching along these radial dislocations is the origin of the formation of microparticles with trench structures.
May 2017, Research paper (scientific journal), joint, 19, 19, 1466-8033, DOI(公開)(r-map), 2681, 2686 - 化学工学 2017年鑑 13章 塗布
稲澤晋、菰田悦之
化学工学
2017, (MISC) Introduction and explanation (scientific journal), joint - Liquid penetration as a simple detection method for structural differences in particulate films prepared from slurries
Hayato Miyazaki, Yosuke Nomura, Hiroki Sugai, Motoyuki Iijima, Susumu Inasawa and Hidehiro Kamiya
Powder Technology
Sep. 2016, Research paper (scientific journal), joint, 303, DOI(公開)(r-map), 59, 67 - Surface freezing and surface coverage as key factors for spontaneous formation of colloidal fibers in vacuum drying of colloidal suspensions
Susumu Inasawa, Takuya Katayama and Yukio Yamaguchi
Soft Matter
Aug. 2016, Research paper (scientific journal), joint, 12, DOI(公開)(r-map), 7663, 7669 - Formation kinetics of particulate films in directional drying of a colloidal suspension
Susumu Inasawa, Yu Oshimi and Hidehiro Kamiya
Soft Matter
Aug. 2016, Research paper (scientific journal), joint, 12, DOI(公開)(r-map), 6851, 6857 - 化学工学 2016年鑑 13章 塗布
稲澤晋
化学工学
2016, (MISC) Introduction and explanation (scientific journal), only - Measurement and kinetic modeling on photoluminescence stability from "trenched" silicon microparticles under continuous excitation
Susumu Inasawa and Yukio Yamaguchi
Chemical Engineering Science
Aug. 2015, Research paper (scientific journal), joint, 138, 9, 16 - Alignment of vascular endothelial cells as a collective response to shear flow
Seiichi Ohta, Susumu Inasawa and Yukio Yamaguchi
Journal of Physics D: Applied Physics
May 2015, Research paper (scientific journal), joint, 48, 24, 245401 - Aggregates of silicon quantum dots as a drug carrier: selective intracellular drug release based on pH-responsive
Seiichi Ohta, Kentaro Yamura, Susumu Inasawa and Yukio Yamaguchi
Chemical Communications
Jan. 2015, Research paper (scientific journal), joint, 51, 6422, 6425 - In-situ observation of the growth of individual silicon wires in the zinc reduction reaction of SiCl4
Susumu Inasawa
Journal of Crystal Growth
Nov. 2014, Research paper (scientific journal), only, 412, 109, 115 - エネルギー材料としてのシリコンナノワイヤーの研究動向
稲澤晋
化学工学
2014, (MISC) Introduction and explanation (scientific journal), only, 78, 846 - A model of silica dissolution based on acid dissociation of internal silanol
Fumiya Nikaido*, Susumu Inasawa, Yoshiko Tsuji and Yukio Yamaguchi
Bulletin of the Chemical Society of Japan
Apr. 2013, Research paper (scientific journal), joint, 86, 4, 520, 525 - Optical Anisotropy in Packed Isotropic Spherical Particles: Indication of Nanometer Scale Anisotropy in Packing Strucutre
Kohei Yamaguchi, Susumu Inasawa* and Yukio Yamaguchi
Physical Chemistry Chemical Physics
Feb. 2013, Research paper (scientific journal), joint, 15, 8, 2897, 2902 - Growth Kinetics of Needle-Like Silicon Wires Formed via the Zinc Reduction Reaction of Silicon Tetrachloride
Kohei Yamaguchi, Susumu Inasawa* and Yukio Yamaguchi
Journal of Physical Chemistry C
Sep. 2012, Research paper (scientific journal), joint, 116, 19978, 19983 - Observation of phase transition from dissolved organic semiconducting materials to solid film during drying
Keisuke Oku, Susumu Inasawa*, Yoshiko Tsuji and Yukio Yamaguchi
Drying Technology
Aug. 2012, Research paper (scientific journal), joint, 30, 832, 838 - Statistical Approach to Constructing Predictive Models for Thermal Resistance Based on Operating Conditions
Hiromasa Kaneko, Susumu Inasawa, Nagisa Morimoto, Mitsutaka Nakamura, Hirofumi Inokuchi, Yukio Yamaguchi and Kimito Funatsu
Industrial & Engineering Chemistry Research
Jul. 2012, Research paper (scientific journal), joint, 51, 9906, 9912 - Real Time Observation and Kinetic Modeling of the Cellular Uptake and Removal of Silicon Quantum Dots
Seiichi Ohta*, Susumu Inasawa and Yukio Yamaguchi
Biomaterials
Jun. 2012, Research paper (scientific journal), joint, 33, 4639, 4645 - Size Control of Phase-Separated Liquid Crystal Droplets in a Polymer Matrix Based on the Phase Diagram
Seiichi Ohta*, Susumu Inasawa and Yukio Yamaguchi
Journal of Polymer Science Part B:Polymer Physics
Jun. 2012, Research paper (scientific journal), joint, 50, 863, 869 - Size- and Surface Chemistry-Dependent Intracellular Localization of Luminescent Silicon Quantum Dot Aggregates
Seiichi Ohta*, Peng Shen, Susumu Inasawa and Yukio Yamaguchi
Journal of Materials Chemistry
Jun. 2012, Research paper (scientific journal), joint, 22, 10631, 10638 - Self-organized pattern formation of cracks perpendicular to the drying direction of a colloidal suspension
Susumu Inasawa* and Yukio Yamaguchi
Soft Matter
Apr. 2012, Research paper (scientific journal), joint, 8, 2416, 2422 - Kinetic study on gas phase zinc reduction of silicon tetrachloride
Norihisa Uesawa, Peng Shen Susumu Inasawa*, Akira Miyoshi and Yukio Yamaguchi
Chemical Engineering Journal
Feb. 2011, Research paper (scientific journal), joint, 168, 889, 895 - Selective labeling of the endoplasmic reticulum in live cells with silicon quantum dots
Peng Shen, Seiichi Ohta, Susumu Inasawa* and Yukio Yamaguchi
Chemical Communications
Jan. 2011, Research paper (scientific journal), joint, 47, 8409, 8411 - Size- and structure-dependent toxicity of silica particulates
Sanshiro Hanada, Kinichi Miyaoi, Akiyoshi Hoshino, Susumu Inasawa, Yukio Yamaguchi and Kenji Yamamoto
Colloidal Quantum Dots/nanocrystals For Biomedical Applications Vi
2011, Research paper (international conference proceedings), joint, DOI(公開)(r-map), 79090A - Stable and color-tunable fluorescence from silicon nanoparticles formed by single-step plasma assisted decomposition of SiBr4
Peng Shen*, Norihisa Uesawa, Susumu Inasawa and Yukio Yamaguchi
Journal of Materials Chemistry
Sep. 2010, Research paper (scientific journal), joint, 20, 1669, 1675 - Quantitative study of surface deprotonation induced settling mode transition of silica colloidal particles
Keisuke Oku*, Susumu Inasawa and Yukio Yamaguchi
Journal of Chemical Engineering Japan
Aug. 2010, Research paper (scientific journal), joint, 43, 850, 856 - Characterization of Flower-Like Silicon Particles Obtained from Chemical Etching: Visible Fluorescence and Superhydrophobicity
Peng Shen*, Norihisa Uesawa, Susumu Inasawa and Yukio Yamaguchi
Langmuir
Aug. 2010, Research paper (scientific journal), joint, 26, 13522, 13527 - Gas Phase Synthesis of Rough Silicon Nanowires via the Zinc Reduction of Silicon Tetrachloride
Norihisa Uesawa*, Susumu Inasawa, Yoshiko Tsuji and Yukio Yamaguchi
Journal of Physical Chemistry C
Mar. 2010, Research paper (scientific journal), joint, 114, 4291, 4296 - Silicon nanocrystals with oxide surface passivation: Synthesis, characterization and optical stability
Peng Shen, Norihisa Uesawa, Susumu Inasawa and Yukio Yamaguchi
Abstract of Papers of the American Chemical Society
2010, Research paper (international conference proceedings), joint, 239, 644-INOR - Gas phase formation of rough silicon nanowires via zinc reduction of silicon tetrachloride
Norihisa Uesawa, Peng Shen, Susumu Inasawa, Yoshiko Tsuji and Yukio Yamaguchi
Abstract of Papers of the American Chemical Society
2010, Research paper (international conference proceedings), joint, 239, 125-INOR - Formation of Optically Anisotropic Films from Spherical Colloidal Particles
Susumu Inasawa* and Yukio Yamaguchi
Langmuir
Sep. 2009, Research paper (scientific journal), joint, 25, 11197, 11201 - Formation of Well-Aligned Thin Films of Rod-Like Nanoparticles via Solvent Evaporation: A Simulation Study
Seiichi Ohta*, Susumu Inasawa, Osamu Koike, Masahiro Fujita and Yukio Yamaguchi
Applied Physics Express
Jun. 2009, Research paper (scientific journal), joint, 2, 065002 - Construction of high predictive fouling models using statistical methods
Hiromasa Kaneko, Susumu Inasawa, Hirofumi Inokuchi and Kimito Funatsu
Proceedings of Heat Exchanger Fouling and Cleaning VIII
2009, Research paper (international conference proceedings), joint, 40, 260, 262 - Quantitative evaluation of fouling under a well-defined shear flow
S. Inasawa, M. Mukai, N. Morimoto, M. Nakamura, H. Inokuchi and Y. Yamaguchi
Proceedings of Heat Exchanger Fouling and Cleaning VIII,
2009, Research paper (international conference proceedings), joint, 68, 464-467 - Particle growth of magnesium alkoxide as a carrier material for polypropylene polymerization catalyst
Shojiroh Tanase*, Kiyotaka Katayama, Susumu Inasawa, et al.
Applied Catalysis A : General
Nov. 2008, Research paper (scientific journal), joint, 350, 197, 206 - Photoinduced Film Formation of Colloidal CdSe Quantum Dots
Kosuke Wada, Susumu Inasawa*, Atsushi Komoto, Takafumi Uematsu and Yukio Yamaguchi
Journal of Physical Chemistry C
Nov. 2008, Research paper (scientific journal), joint, 112, 17109, 17114 - New synthesis method using magnesium alkoxides as carrier materials for Ziegler-Natta catalysts with spherical morphology
Shojiroh Tanase*, Kiyotaka Katayama, Susumu Inasawa
Macromolecular Reaction Engineering
Jun. 2008, Research paper (scientific journal), joint, 2, 233 - Spectroscopic study of laser-induced phase transition of gold nanoparticles on nanosecond time scales and longer
Susumu Inasawa*, Masakazu Sugiyama, Suguru Noda and Yukio Yamaguchi
Journal of Physical Chemistry B
Feb. 2006, Research paper (scientific journal), joint, 110, 3114, 3119 - Bimodal size distribution of gold nanoparticles under picosecond laser pulses
Susumu Inasawa*, Masakazu Sugiyama and Yukio Yamaguchi
Journal of Physical Chemistry B
May 2005, Research paper (scientific journal), joint, 109, 9404, 9410 - Laser-induced shape transformation of gold nanoparticles below the melting point : The effect of surface melting
Susumu Inasawa*, Masakazu Sugiyama and Yukio Yamaguchi
Journal of Physical Chemistry B
Mar. 2005, Research paper (scientific journal), joint, 109, 3104, 3111 - Au-nano-particles production by pico-second ultra-violet laser deposition in Au-ion doped PMMA film
Tomohiro Hirose, Takashige Omatsu*, Masakazu Sugiyama, Susumu Inasawa and Seiichiro. Koda
Chemical Physics Letters
May 2004, Research paper (scientific journal), joint, 390, 166 - Bimodal size distribution of gold nanoparticles in aqueous solution during pulsed laser irradiation
Susumu Inasawa, Masakazu Sugiyama and Yukio Yamaguchi
Materials Research Society Symposium Proceedings
2004, Research paper (international conference proceedings), joint, 850, MM2.7, DOI(公開)(r-map), 187, 191 - Size controlled formation of gold nanoparticles using photochemical growth and photothermal size reduction by 308 nm laser pulses
Susumu Inasawa, Masakazu Sugiyama* and Seiichiro Koda
Japanese Journal of Applied Physics
Oct. 2003, Research paper (scientific journal), joint, 42, 6705 - Diffraction efficiency of holographic grating formed in Au nano particle-doped sol-gel silica film by laser irradiation
T. Hirose, T. Omatsu, M. Sugiyama, S. Inazawa, A. Takami and S. Koda
Japanese Journal of Applied Physics
2003, Research paper (scientific journal), joint, 42, DOI(公開)(r-map), 1288 - Optical recording media using laser-induced size reduction of Au nanoparticles
26. Masakazu Sugiyama, Susumu Inasawa, Seiichiro Koda*, Tomohiro Hirose, Takeaki Yonekawa, Takashige Omatsu and Akinori Takami
Applied Physics Letters
Sep. 2001, Research paper (scientific journal), joint, 79, 1528
Books and Other Publications
- 塗布・乾燥技術の基礎とものづくり 新素材の利用と次世代デバイスへの展開
化学工学会 関東支部編 化学工学会 材料・界面部会著
三恵社
31 Jan. 2020 - 分散・塗布・乾燥の基礎と応用 プロセスの理解からものづくりの革新へ
監修 山口 由岐夫
テクノシステム
Mar. 2014
Presentations
- エマルションや粒子分散液の蒸発現象
第 69 回界面科学部会秋季セミナー － コロイド分散系の“ばえる”界面ダイナミクスとその応用 －
05 Nov. 2024, Oral presentation(invited, special) - In-situ observation of drying distribution on cm2-scale coating films
ISCST 2024
Sep. 2024, Oral presentation(general) - Solidification dynamics in drying colloidal suspensions measured by optical coherence tomography: effect of initial particle concentrations on formation kinetics of a solid film
ISCST 2024
Sep. 2024, Oral presentation(general) - 溶媒組成に応答した酸化チタン粒子の動的な分散性変化と縮合脂肪酸の吸着挙動
第73回高分子討論会
Sep. 2024, Poster presentation - 油/水２層系における水の乾燥速度に対する両親媒性物質の影響
第75回コロイドおよび界面化学討論会
Sep. 2024, Poster presentation - 酸化チタン分散体における縮合脂肪酸の吸着およびその重合度分布
第75回コロイドおよび界面化学討論会
Sep. 2024, Oral presentation(general) - エマルションの急縮小流れにおける界面安定化物質の効果
化学工学会第55回秋季大会
Sep. 2024, Poster presentation - 固体粒子・溶質の共存による水蒸発の著しい遅延
化学工学会第55回秋季大会
Sep. 2024, Oral presentation(general) - ソルボサーマル法を用いた疎水性シングルナノZrO2結晶合成および分散性評価
化学工学会第55回秋季大会
Sep. 2024, Oral presentation(general) - 水油界面での自己乳化と物質移動速度
化学工学会第55回秋季大会
Sep. 2024, Poster presentation - 粒子膜でのクラック形成と収縮分布
化学工学会第55回秋季大会
Sep. 2024, Poster presentation - 粒子安定化液滴の収縮/膨張を用いた界面粒子膜の評価
化学工学会第55回秋季大会
Sep. 2024, Poster presentation - 有機配位子の構造の違いによるナノ粒子の有機溶媒中での分散性の比較
化学工学会第55回秋季大会
Sep. 2024, Oral presentation(general) - What governs kinetics of water evaporation from polymer solutions?
The 14th Asian Coating Workshop
May 2024, Oral presentation(general) - Mass transfer in drying emulsions
The 14th Asian Coating Workshop
May 2024, Oral presentation(general) - ナノ粒子の有機溶媒中での分散性に及ぼす有機配位子の分岐構造の影響
化学工学会第89年会
Mar. 2024, Poster presentation - 粒子・溶質混合水溶液の乾燥速度論
化学工学会第89年会
Mar. 2024, Oral presentation(general) - マイクロワイヤーの回転による濃厚コロイド分散液での粒子充填の可視化と圧縮力評価
化学工学会第89年会
Mar. 2024, Oral presentation(general) - Transport kinetics through narrow void: examples of drying colloid-polymer suspensions and imbibition of water in polydisperse foam
Séminaire multi-échelle, Laboratoire Navier, France
26 Jan. 2024, Public discourse, seminar, tutorial, course, lecture and others - Kinetics in drying suspensions: (i)Transport of solutes via packed layer of particles and (ii)Formation of packed layer of particles on tilted air-water interfaces.
Seminar, Bordeaux University/Solvay
23 Jan. 2024, Public discourse, seminar, tutorial, course, lecture and others - Novel Design Strategy for Mineral Sunscreens: Dynamic Homogenization of Inorganic UV Filters on the Skin for Enhanced UV Protection and Visual Transparency
IFSCC 2023
07 Sep. 2023, Oral presentation(general) - 水の蒸発に起因した粒子膜の圧縮と液固相変化
化学工学会第54回秋季大会
Sep. 2023, Oral presentation(general) - 液滴が円管内流れの速度場に与える影響評価
化学工学会第54回秋季大会
Sep. 2023, Poster presentation - Water-in-oil(W/O)型エマルションでの水滴凍結の伝播速度
化学工学会第54回秋季大会
Sep. 2023, Poster presentation - 密度差のある2ガスの反応器内での自発混合とシリコン効率合成
化学工学会第54回秋季大会
Sep. 2023, Poster presentation - 溶媒揮発に誘起される分散剤の吸着挙動変化と 金属酸化物の分散性転移
第74回コロイドおよび界面化学討論会(2023)
Sep. 2023, Oral presentation(general) - In-situ measurement of particle-concentration profiles in a drying suspension with optical coherence tomography
13th Asian Coating Workshop
May 2023, Oral presentation(general) - Drying kinetics of aqueous colloid-polymer suspensions impeded by permeation and condensation of polymer molecules in packed colloidal particles
13th Asian Coating Workshop
May 2023, Oral presentation(general) - Transport and packing in drying colloidal suspensions
13th Asian Coating Workshop
May 2023, Oral presentation(general) - 斜めの気液界面に対する粒子充填速度論
化学工学会 第88年会
Mar. 2023, Oral presentation(general) - 糖添加した粒子分散液での蒸発遅延効果
化学工学会 第88年会
Mar. 2023, Oral presentation(general) - Reactions and flows affected by liquid-gas or liquid-liquid interfaces
14th Japan-Korea Symposium on Materials and Interfaces
Nov. 2022, Oral presentation(invited, special) - 揮発性oil-in-waterエマルションの乾燥現象
化学工学会 第53回秋季大会
Sep. 2022, Oral presentation(general) - Reversibility and inhomogeneity of packed films in drying of colloidal suspensions
12th Asian Coating Workshop
Jun. 2022, Oral presentation(general) - Drying and flow of phase-separated liquids
12th Asian Coating Workshop
Jun. 2022, Oral presentation(general) - Flow effects on the morphology of silicon materials produced in a gas phase reaction of SiCl4
IChES2022
Mar. 2022, Oral presentation(invited, special) - 油水界面での固体粒子脱離・非脱離現象と油中水滴の蒸発速度
化学工学会 第52回秋季大会
Sep. 2021, Oral presentation(general) - 粒子分散液乾燥での自発的な密度差/循環流れの生成メカニズム
化学工学会 第52回秋季大会
Sep. 2021, Oral presentation(general) - 溶液乾燥に起因する分散粒子から充填粒子への「相変化」とその可逆性
化学工学会 第52回秋季大会
Sep. 2021, Poster presentation - 蒸発中の水に分散する粒子安定化油滴の圧縮変形への塩添加効果
第72回コロイドおよび界面化学討論会
Sep. 2021, Oral presentation(general) - 乾燥過程にある粒子分散液の薄膜内部で生じる循環流シミュレーション
化学工学会秋田大会
Jul. 2021, Oral presentation(general) - 0 マイクロワイヤー添加による濃厚コロイド分散液乾燥での充填圧縮過程の評価
化学工学会秋田大会
Jul. 2021, Oral presentation(general) - 気相反応を用いたシリコンナノ・マイクロ材料の自発生成と構造制御
第四回 東工大応用化学系 次世代を担う若手シンポジウム
27 Mar. 2021, Oral presentation(invited, special) - コロイド粒子とポリマーを含む懸濁液の乾燥速度とポリマー偏析現象
化学工学会第86年会
22 Mar. 2021, Poster presentation - コロイド・ポリマー溶液の乾燥過程で生じるポリマー偏析現象
第22階化学工学会学生発表会(東京大会)
Mar. 2020, Oral presentation(general) - Boron-dopedシリコンウィスカーの自発生成と導電性の制御
化学工学会第85年会
Mar. 2020, Oral presentation(general) - 乾燥に伴う界面変形：液液および固液界面での物質移動
最近の化学工学講習会６８
21 Jan. 2020, Oral presentation(invited, special) - Transport, accumulation and packing of particles in drying of colloidal suspensions
Department seminar
Jan. 2020, Public discourse, seminar, tutorial, course, lecture and others - Effects of storage period on buckling modes of particle-stabilized water droplets
Asia Pacific Confederation of Chemical Engineering (APCChE2019)
Sep. 2019, Oral presentation(general) - Drying-induced circulation flow of colloidal suspensions confined in a thin Hele-Shaw cell
Asia Pacific Confederation of Chemical Engineering (APCChE2019)
Sep. 2019, Oral presentation(general) - 液相エッチングプロセスを用いた放射状粒界を持つSiマイクロ粒子の形状制御
化学工学会横浜大会
08 Aug. 2019, Oral presentation(general) - 粒子分散液凍結で生成する多孔体構造への粒子濃度効果の解明
化学工学会横浜大会
08 Aug. 2019, Oral presentation(general) - エマルションの円管内流動における分散相の効果
化学工学会横浜大会
08 Aug. 2019, Oral presentation(general) - Roles of water wettability of particles on drying of particle-stabilized water droplets immersed in oil
Asia Coating Workshop 2019
May 2019, Poster presentation - Drying, packing and formation of packed layers of particles from various colloidal suspensions
Asia Coating Workshop 2019
May 2019, Oral presentation(general) - Enhanced Drying Flux from a Narrow Drying Interface: A Quantitative Study of Drying Flux and Film Formation Kinetics During Directional Drying of Colloidal Suspensions
ISCST 2018
Sep. 2018, Poster presentation - Drying of Water Droplets Stabilized by Surfactant Molecules or Solid Particles Immersed in a Non-Volatile Oil Layer
ISCST2018
Sep. 2018, Oral presentation(general) - 粒子安定化エマルションをもちいた液-液界面での物質移動現象の評価
化学工学会室蘭大会2018(3支部合同大会)
Aug. 2018, Oral presentation(general) - 亜鉛還元反応を用いたp-type Siワイヤ合成でのB濃度制御
化学工学会室蘭大会2018(3支部合同大会)
Aug. 2018, Oral presentation(general) - Recent studies on drying of colloidal suspensions and emulsions
10th Asian Coating Workshop
May 2018, Oral presentation(keynote) - O/Wエマルション中に分散する揮発性油滴の乾燥過程
化学工学会第49回秋季大会
Sep. 2017, Other - 粒子添加エマルションの乾燥における気-液-固接触線での水の移動現象
化学工学会第49回秋季大会
Sep. 2017, Other - 粒子分散液乾燥での気液界面による蒸発fluxへの影響と粒子膜形成の速度論的評価
化学工学会第49回秋季大会
Sep. 2017, Other - 亜鉛還元法を用いたシリコンナノワイヤー膜合成における反応器内ガス流れの影響
化学工学会第49回秋季大会
Sep. 2017, Other - 塗布乾燥膜での亀裂形成に対するポリマー添加効果
化学工学会東京大会2017
Aug. 2017, Other - 粒子添加エマルションの乾燥過程の速度論
化学工学会東京大会2017
Aug. 2017, Other - シリコンワイヤーの大直径化と温度推算
化学工学会東京大会2017
Aug. 2017, Other - Dependence of drying fluxes on the scale of drying interface using colloidal suspensions
9th Asian Coating Workshop (ACW2017)
May 2017, Poster presentation - Drying of Pickering Emulsions: Effects of Types of Surface-active Particles
9th Asian Coating Workshop (ACW2017)
May 2017, Oral presentation(general) - oil-in-water型エマルションの乾燥に起因した分散油滴の圧縮・崩壊現象
化学工学会第82年会
07 Mar. 2017, Poster presentation - 分散液の塗布乾燥・乾燥プロセスでなにが起きているか
膜工学サロン
Mar. 2017, Oral presentation(invited, special) - 乾燥による粒子膜形成での不均一性の発生メカニズム
第19回化学工学会学生発表会【東日本】
Mar. 2017, Other - Pickeringエマルションの乾燥：界面安定化微粒子のサイズ・形状効果
化学工学会第82年会
Mar. 2017, Oral presentation(general) - Drying of colloidal suspensions as a film formation process: kinetics and structures of packed particles
3rd International Conference on Global Sustainability and Chemical Engineering
Feb. 2017, Oral presentation(general) - SiCl4から作るナノ・マイクロサイズのシリコン材料の形状制御
有機エレクトロニクス研究会
Jan. 2017, Oral presentation(invited, special) - 気相反応を用いたナノ・マイクロシリコンの生成と形状・サイズ制御
第22回 流動化・粒子プロセッシングシンポジウム
Dec. 2016, Oral presentation(invited, special) - Study on stability of oil-in-water emulsions in drying processes
12th Japan-Korea Symposium on Materials & Interfaces - International Symposium on Frontiers in Chemical Engineering -
Nov. 2016, Poster presentation - Simulation of temperature profile along a silicon whisker grown by VLS mechanism for increasing diameter
12th Japan-Korea Symposium on Materials & Interface International Symposium on Frontiers in Chemical Engineering
Nov. 2016, Poster presentation - Maximum formation rate for silicon microparticles with a radial-polycrystalline structure
12th Japan-Korea Symposium on Materials & Interface International Symposium on Frontiers in Chemical Engineering
Nov. 2016, Poster presentation - コロイド分散液の乾燥による粒子膜形成の直接観察と構造評価
第5回 E-colloid:「先端エレクトロデバイスに効く！コロイド界面化学」
Nov. 2016, Oral presentation(invited, special) - Formation kinetics of a packed layer of particles due to drying of a colloidal suspension
The SCEJ 48th Autumn Meeting
08 Sep. 2016, Oral presentation(general) - VLS成長でのシリコンウィスカー結晶化温度の推算と大直径化
化学工学会 第48会秋季大会
07 Sep. 2016, Poster presentation - 放射状の結晶構造を持つSiマイクロ粒子の生成機構の解明
化学工学会 第48会秋季大会
07 Sep. 2016, Poster presentation - イガグリ形状を利用した発光生シリコン粒子の長寿命化
化学工学会 第48会秋季大会
07 Sep. 2016, Poster presentation - 粒子添加によるエマルション乾燥の加速効果
化学工学会 第48会秋季大会
07 Sep. 2016, Poster presentation - Silicon materials for electrodes of Lithium ion battery (LIB) produced via the zinc reduction method
The 5th International Seminar for Special Doctoral Program “Green Energy Conversion Science and Technology”
01 Sep. 2016, Poster presentation - In-situ observation of drying-induced deformation and coalescence of emulsions,
18th ISCST symposium
Sep. 2016, Oral presentation(general) - Packing of colloidal particles due to drying and related phenomena: Overview of recent studies
Asia Coating Workshop 2016
12 May 2016, Oral presentation(general) - 膜状Siナノワイヤー生成への反応/反応器条件の影響の解明
化学工学会第81年会
Mar. 2016, Poster presentation - 液浸透現象を利用したスラリーと塗布乾燥膜の濡れ性評価
化学工学会第81年会
Mar. 2016, Other - 最新の実験事例のご紹介：サスペンション・エマルションの乾燥現象
SNAP研究会2015年度事例研究会
16 Nov. 2015, Oral presentation(invited, special) - O/Wエマルションの乾燥過程における変形・合一現象の解析
化学工学会 第47回秋季大会
Sep. 2015, Other - 粒子分散液の乾燥過程に於ける粒子充填挙動の解析
化学工学会 第47回秋季大会
Sep. 2015, Other - 減圧乾燥下でのコロイダルファイバー自発形成メカニズム
化学工学会 第47回秋季大会
Sep. 2015, Other - シリコンナノワイヤーのスケールアップ合成と「質」の評価
化学工学会 第47回秋季大会
Sep. 2015, Other - Study on packing fraction of particulate films formed from drying of colloidal suspensions
7th Asia Coating Workshop (ACW2015)
May 2015, Other - SiCl4亜鉛還元反応を用いたインチスケールでの シリコンナノワイヤー膜の作製
分離技術会年会2015
May 2015, Other - SiCl4亜鉛還元反応でのシリコンウィスカー生成過程の直接観察
化学工学会 第80年会
Mar. 2015, Other - コロイド分散液乾燥過程での粒子充填機構の解析
化学工学会 第80年会
Mar. 2015, Poster presentation - 塗布乾燥過程での粒子充填状態に及ぼす 乾燥速度および粒子表面修飾の影響
粉体工学会 2014年度 秋期研究発表会
Nov. 2014, Poster presentation - 放射状の結晶構造を有するシリコンマイクロ粒子の生成とサイズ制御
化学工学会 第46回秋季大会
Sep. 2014, Other - リチウムイオン電池用シリコン粒子負極性能への混合混練プロセス条件の影響評価
化学工学会第46回秋季大会
Sep. 2014, Other - コロイド溶液の減圧乾燥下でのマイクロファイバーの発生メカニズム
化学工学会第46回秋季大会
Sep. 2014, Other - Influence of Mixing and Kneading Process during Electrodes Preparation to the Performance of Lithium-ion Batteries
6th Asia Coating Workshop (ACW2014)
Jun. 2014, Poster presentation - SiCl4亜鉛還元反応で生成するSiナノワイヤー群の成長観察と速度解析
化学工学会 第79年会
19 Mar. 2014, Oral presentation(general) - SiCl4亜鉛還元反応で生成する高純度針状シリコンの成長メカニズム
化学工学会 第79年会
19 Mar. 2014, Other - コロイド粒子分散液の乾燥過程での膜形成と膜物性
第44回 Continuing Educationシリーズ講習会 「分離・塗布・乾燥プロセスにおける構造制御」
01 Nov. 2013, Oral presentation(invited, special) - コロイド粒子分散液の減圧乾燥プロセスによるコロイダルファイバーの形成
化学工学会 第45回秋季大会
18 Sep. 2013, Oral presentation(general) - 乾燥に起因したコロイド粒子膜内の「ナノ歪み」による複屈折発現
化学工学会 第45回秋季大会
17 Sep. 2013, Oral presentation(general) - 乾燥によるコロイド粒子の充填挙動観察と膜形成/変形メカニズム
化学工学会
17 Sep. 2013, Oral presentation(general) - 亜鉛還元法によるシリコン形態形成メカニズム
化学工学会 第45会秋季大会
17 Sep. 2013, Oral presentation(general) - 赤色発光シリコン材料の気相合成と発光特性
化学工学会 第45会秋季大会
17 Sep. 2013, Oral presentation(general) - リチウムイオン電池シリコン粒子負極に対する粒子形状と塗布乾燥プロセスの性能影響
化学工学会 第45回秋季大会
16 Sep. 2013, Oral presentation(general) - Effect of Drying Process on Performance of Silicon Anodes for Lithium-ion Secondary Batteries
ACW2013
09 May 2013, Poster presentation - Formation of “Colloidal Fibers” from the Surface of a Colloidal Suspension under Reduced-Pressure Drying
ACW2013
09 May 2013, Poster presentation - Direct Observation of Packing Behavior of Colloidal Particles during Drying of a Suspension
ACW 2013 The 5th Asian Coating Workshop
09 May 2013, Oral presentation(general)
Committee Memberships
- 日本学術振興会
審査意見作成者
From 202407, To 202408 - 化学工学会 材料・界面部会
副部会長
From 202403, To 202603 - 塗布技術研究会
代表
From 202404, To 202603
Media Coverage
- 資生堂、高い紫外線防御力と透明な仕上がりを両立した次世代ミネラルサンスクリーン技術を開発 ～世界初、塗布後に紫外線散乱剤の分散状態が変化する処方技術を開発～
PR TIMES
From 10 Apr. 2025, To Mar. 2026 - 資生堂、高い紫外線防御力と透明な仕上がりを両立した次世代ミネラルサンスクリーン技術を開発
株式会社資生堂 webページ
From 10 Apr. 2025, To Mar. 2026 - 資生堂が開発した革新的日焼け止め技術、その概要と特長とは
サードニュース
From 10 Apr. 2025, To Mar. 2026 - 高い紫外線防御力と透明な仕上がりを両立した次世代ミネラルサンスクリーン技術を開発 ～世界初、塗布後に紫外線散乱剤の分散状態が変化する処方技術を開発～［資生堂］
日本経済新聞
From 10 Apr. 2025, To Mar. 2026 - 高い紫外線防御力と透明な仕上がりを両立した次世代ミネラルサンスクリーン技術を開発 ～世界初、塗布後に紫外線散乱剤の分散状態が変化する処方技術を開発
毎日新聞
From 10 Apr. 2025, To Mar. 2026 - 農工大，光学顕微鏡で非接触に高分子濃度の分布測定
https://optronics-media.com/news/20241212/96405/
Optronics Online
From 12 Dec. 2024, To 12 Dec. 2024 - 蒸発途中の水溶液内で高分子濃度の分布測定 農工大、光学顕微鏡で成功
科学新聞2025年1月17日 p. 4 科学技術総合欄
科学新聞
From 17 Jan. 2025, To 17 Jan. 2025 - 蒸発液体内で粒子濃度分布のリアルタイムに成功 新たな機能性粒子膜作成に貢献 東京農工大など
https://bunkyodezi.com/research/10806/
文教速報デジタル版
From 09 Apr. 2024, To 09 Apr. 2024 - 東京農工大、油中に分散した水滴の凍結が隣の水滴に伝わる速度が全体の凍結速度を決めていることを解明
https://www.nikkei.com/article/DGXZRSP676144_V00C24A8000000/
日本経済新聞
From 05 Aug. 2024, To 05 Aug. 2024 - エマルション流速予測
東京農工大学の稲澤晋准教授らが、エマルション（乳濁液）について、油滴量などが流速に与える影響を解明したことが紹介される。
日刊工業新聞
From 14 Jan. 2022, To 14 Jan. 2022 - 油滴を多量に含んだ水の流れの速度をシンプルに導く手法を農工大が考案
東京農工大学の稲澤晋准教授らの研究チームが、油滴を多量に含んだ水(エマルション)の流れの速度は油滴がない場合に比べて1/10以下になること、水の体積と水-油の接触面積など、いくつかの指標を用いることで流れの速度を表せることを明らかにしたと発表したことが紹介される。
マイナビニュース／gooニュース／ニコニコニュース
From 11 Jan. 2022, To 11 Jan. 2022 - せっけん泡層の水浸透予測
東京農工大学の稲澤晋准教授らが、せっけんなどの界面活性剤と水でできる泡層への水野新党を簡易に予測できるモデルを開発したことが紹介される。
日刊工業新聞
From 19 Oct. 2021, To 19 Oct. 2021 - 界面活性剤の種類を問わずに浸透現象を説明可能な数理モデル、農工大が発表
東京農工大学の稲澤晋准教授らは、石けんなどの界面活性剤と水でできる泡層に水が自発的に浸透する現象を観察し、泡の大きさや界面活性剤の種類によらずに浸透現象を簡易な数理モデルで説明できることを明らかにしたと発表したことが紹介される。
マイナビニュース／gooニュース／マピオンニュース／infoseekニュース
From 14 Oct. 2021, To 14 Oct. 2021