## Activity

**Journal Publication**

**<2019> **

- Reiko Tsuzuki, Takahiko Ban, Masanari Fujimura, and Yuichiro Nagatsu: "Dual role of surfactant-producing reaction in immiscible viscous fingering evolution", Phys. Fluids, 31, 022102 (2019)
- Jianding Yu, Yuko Inatomi, Velu Kumar, Yasuhiro Hayakawa, Yasunori Okano, Mukannan Arivanandhan, Yoshimi Momose, Xiuhong Pan, Yan Liu, Xingwang Zhang, and Xinghong Luo, "Homogeneous InGaSb crystal grown under microgravity using Chinese Recovery Satellite SJ-10", npj Microgravity 5:8 (2019), DoI: https://doi.org/10.1038/s41526-019-0068-1
- Petya Valentinova Stoyanova, Lei Wang, Atsushi Sekimoto, Yasunori Okano, Youhei Takagi, "Effect of thin and rough layers of porous materials on drag", J. Chem. Eng. Japan, accepted
- Takashi Horiuchi, Lei Wang, Atsushi Sekimoto, Yasunori Okano, Takuya Yamamoto, Toru Ujihara, Sadik Dost, "The effect of crucible rotation and crucible size in top-seeded solution growth of single crystal silicon carbide", Cryst. Res. Technol., accepted, DoI: https://doi.org/10.1002/crat.
201900014 - Y. Imai, T. Yamamoto, A. Sekimoto, Y. Okano, R. Sato and Y. Shigeta, "Numerical investigation of the nano-scale solutal Marangoni convections", J. Taiwan Inst. Chem. Engineers, 98, 20-26 (2019). DoI: 10.1016/j.jtice.2018.05.015

---- - Takashi Horiuchi, Lei Wang, Atsushi Sekimoto, Yasunori Okano, Toru Ujihara and Sadik Dost: "Adjoint-based sensitivity analysis for the optimal crucible temperature profile in the RF-Heating TSSG-SiC crystal growth process", J. Crystal Growth, 517, 59-63 (2019)
- Atsushi Sekimoto, Yoshiki Kanemaru, Yasunori Okano, Kei Kanie, Ryuji Kato, Masahiro Kino-Oka: "Numerical investigation of particle dispersion in the preprocessing stage for
a static cell cultivation", J. Regenerative Therapy (in printing) - Jin Xin, Atsushi Sekimoto, Yasunori Okano, Takuya Yamamoto, Yasuhiro Hayakawa, Yuko Inatomi, Sadik Dost: "Numerical investigation of the effect of heating rate on InGaSb crystal growth under zero-gravity", Microgravity Sci. Technol. (in printing), DoI: https://doi.org/10.1007/s12217-019-9698-x
- Reiko Tsuzuki, Ryohei Tanaka, Takahiko Ban, and Yuichiro Nagatsu: "Deviation from capillary number scaling of nonlinear viscous fingering formed by the injection of Newtonian surfactant solution", Phys. Fluids, 31, 042108 (2019)
- Lei Wang, Takashi Horiuchi, Atsushi Sekimoto, Yasunori Okano, Toru Ujihara, Sadik Dost: "Three-dimensional numerical analysis of Marangoni convection occurring during the growth process of SiC by the RF-TSSG method", J. Crystal Growth, 520, 72-81 (2019) https://doi.org/10.1016/j.jcry
sgro.2019.05.017

**<2018>**

- H. Minakuchi, Y. Okano and S. Dost, "The Hysteresis Phenomena of Flow Patterns due to Thermal and Solutal Marangoni Convections in a Liquid Bridge under Zero Gravity", Fluid Mech Res Int 2(1): 00018. DOI: 10.15406/fmrij.2018.02.00018
- V. Nirmal Kumar, Y. Hayakawa, M. Arivanandhan, G. Rajesh, T. Koyama, Y. Momose, T. Ozawa, Y. Okano and Y. Inatomi, "Orientation-dependent dissolution and growth kinetics of InxGa1-xSb by vertical gradient freezing method under microgravity", J. Cryst. Growth, Vol. 496-497, pp.15-17 (2018)
- T. Yamamoto, M. Yano, Y. Okano and M. Kino-oka, "Numerical investigation for the movement of cell colonies in bioreactors: stirring and orbital shaking tanks", J. Chem. Eng, Japan,Vol. 51, pp.423-430 (2018).
- 朝田皓, 北川慎也, 大谷肇, 木下武彦, 石垣友三, 柴田信行, 二井晋, 岡野泰則: 流動電位測定によるポリオキシエチレン鎖を有する非イオン性界面活性剤と金属イオン間の相互作用の解析, 分析化学, 掲載決定.
- L. Wang, T. Horiuchi, A. Sekimoto, Y. Okano, T. Ujihara, S. Dost, "Numerical investigation of the effect of static magnetic field on the TSSG growth of SiC", J. Cryst. Growth, 498, 140-147 (2018). 10.1016/j.jcrysgro.2018.06.017
- Takahiko Ban, Michiaki Sugiyama, Yuichiro Nagatsu; Hideaki Tokuyama, "Motion-Based Detection of Lanthanides (III) Using Self-Propelled Droplets", The Journal of Physical Chemistry, 122, 10647-10651 (2018).

**<2017>**

- Takahiko Ban, M. Kaji, Y. Nagatsu, H. Tokuyama，"Propagating Precipitation Waves in Disordered Medi" ACS Omega, 2, 8027-8032(2017).
- Takahiko Ban, Yuya Kobayashi, Ryuta Suzuki, and Yuichiro Nagatsu "Active Liquid Matter Driven by Nonequilibrium Interfacial Tension" J. Phys. Soc. Jpn., 86, 101005(2017).
- Hideaki Tokuyama, Yu Nakahata, Ryuichi Sato,Yuichiro Nagatsu, and Takahiko Ban, "Mechanical and metal adsorption propertiesof emulsion gel adsorbents composed of PEGDA-co-PEG hydrogels and tri-n-octylamine", Polym. Bull., 74, 1-10(2017).
- Gakuto Kato, Takahiko Ban, and Hideaki Tokuyama, "Pd(II) ion adsorption onto emulsion gel beads in a fixed bed" Sep Sci Technol., 52, 2415-2420(2017).
- Hideaki Tokuyama, Motoyasu Onodera, and Takahiko Ban, "Selective temperature-swing adsorption of Pd(II) ions onto a poly(N-isopropylacrylamide-co-allyl mercaptan) gel", Sep. Purif. Technol., 182, 166-170 (2017).
- T. Yamamoto, Y. Okano and S. Dost, "Validation of the S-CLSVOF method with density-scaled balanced continuum surface force model in multiphase systems with thermocapillary flows", Int. J. Numer. Meth. Fluids, 83, 223-244 (2017).
- X. Jin, T. Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa and S. Dost, "A numerical study on the dissolution process of InGaSb under zero gravity", Int. J. Microgravity Sci. Appl. 2017p340206 (2017).
- T. Yamamoto, Y. Okano, T. Ujihara and S. Dost, "Global simulation of the induction heating TSSG process of SiC for the effects of Marangoni convection, free surface deformation and seed rotation," J. Cryst. Growth, 470, 75-88 (2017).
- Y. Takagi, S. Kawahara, Y. Okano and N. Kato, "Numerical simulation of methane seeping from the seabed in the Japan Sea", J. Chem. Eng. Japan, 50, 244-253 (2017).
- H. Minakuchi, Y. Okano and S. Dost, "Effect of thermo-solutal Marangoni convection on the azimuthal wave number in a liquid bridge", J. Crystal Growth, 486, 502-505 (2017).
- M. Yano, T. Yamamoto, Y. Okano, T. Kanamori and M. Kino-oka, "Numerical study of fluid dynamics and particle behavior in an iPS cell culture tank," AJChE, 17, (2017), 29-36.
- Y. Imai, T. Yamamoto, Y. Okano, R. Sato and Y. Shigeta, "Molecular dynamics simulation of atomic-scale solutal Marangoni convection," AJChE, 17, (2017), 73-81.
- T. Yamamoto, N. Adkar, Y. Okano, T. Ujihara and S. Dost, "Numerical investigation of the transport phenomena occurring in the growth of SiC by the induction heating TSSG method", J. Cryst. Growth, 474, 50-54, (2017).

**<2016>**

- T. Yamamoto, N. Adkar, Y. Okano, T. Ujihara and S. Dost, "Numerical investigation of the transport phenomena occurring in the growth of SiC by the induction heating TSSG method", J. Cryst. Growth (in Press).
- H. Minakuchi, Y. Okano and S. Dost, "Effect of thermo-solutal Marangoni convection on the azimuthal wave number in a liquid bridge", J. Crystal Growth (in press).
- Y. Takagi, S. Kawahara, Y. Okano and N. Kato, "Numerical simulation of methane seeping from the seabed in the Japan Sea", J. Chem. Eng. Japan (accepted).
- V. N. Kumar, M. Arivanandhan, G. Rajesh, T. Koyama, Y. Momose, K. Sakata, T. Ozawa, Y. Okano, Y. Inatomi and Y. Hayakawa, "Investigation of directionally solidified InGaSb ternary alloys from Ga and Sb faces of GaSb(111) under prolonged microgravity at the International Space Station", npj Microgravity 2, Article number: 16026 (2016).
- T. Yamamoto, Y. Okano and S. Dost, "Development of a numerical model for Marangoni convection in the micro-scale environment", J. Therm. Sci. Tech., 11, JTST0036 (2016).
- T. Yamamoto, H. Mirsandi, X. Jin, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa and S. Dost, "A numerical simulation model by volume averaging for the dissolution process of GaSb into InSb in a sandwich system", Num. Heat Tr. B-Fund., 70, pp. 441-458 (2016).
- N. Adkar, T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Numerical simulation of the effect of free surface shape on Marangoni convection in a liquid film sustained in a circular ring with different Prandtl numbers", Int. J. Microgravity Sci. Appl., 33, 330309 (2016).
- T. Ban, T. Fukuyama, S. Makino, E. Nawa and Y. Nagatsu, "Self-propelled vesicles induced by the mixing of two polymeric aqueous solutions through a vesicle membrane gar from equilibrium", Langmuir, 32 (11), pp.2574–2581 (2016).
- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Numerical investigation of oscillatory thermocapillary flows under zero gravity in a circular liquid film with concave free surface", Phys. Fluids, 28, 032106 (2016).

**<2015>**

- T. Ban, Y. Nagatsu and H. Tokuyama, "Propagation properties of the precipitation band in an AlCl3/NaOH System", Langmuir, 32 (2), pp.604–610 (2016).
- Y. Inatomi, K. Sataka, M. Arivanandhan, G. Rajesh, V. Nirmal Kumar, T. Koyama, Y. Momose, T. Ozawa, Y. Okano and Y. Hayakawa, "Growth of In
_{x}Ga_{1-x}Sb alloy semiconductor at the International Space Station (ISS) and comparison with terrestrial experiments", Nature Partner Journal, Microgravity, 1, 15011 (2015). - T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Numerical investigation of the effect of free surface shape on the direction of thermocapillary flow in a thin circular pool", J. Chem. Eng. Japan, 48, pp.407-417 (2015).
- T. Ban and H. Nakata, "Metal-ion-dependent motion of self-propelled droplets due to the Marangoni effect", J. Phys. Chem. B, 119, pp.7100-7105 (2015).
- H. Mirsandi, T. Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa and S. Dost, "A numerical study on the growth process of InGaSb crystals under microgravity with interfacial kinetics", Microgravity Sci. Technol., 27, pp. 313-320 (2015).
- M. Omprakash, M. Arivanandhan, T. Koyama, Y. Momose, H. Ikeda, H. Tatsuoka, D. Aswal, S. Bhattacharya, Y. Okano, T. Ozawa, Y. Inatomi, S. Moorthy Babu and Y. Hayakawa, "High power factor of Ga-doped compositionally homogeneous Si0.68Ge0.32 bulk crystal grown by the vertical temperature gradient freezing method", Crystal Growth & Design, 15, pp.1380-1388 (2015).

**<2014>**

- T. Ban, K. Tani, H. Nakata and Y. Okano, "Self-propelled droplets for extracting rare-earth metal ions, Soft Matter", 10, pp.6316-6320 (2014).
- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "A three-dimensional simulation of thermocapillary flow in a circular thin liquid film under zero gravity", Trans. JSASS Aerospace Tech. Japan, 12, pp. Pe_19-Pe_27 (2014).
- M. Omprakash, M. Arivanandhan, R. Arun Kumar, H. Morii, T. Aoki, T. Koyama, Y. Momose, H. Ikeda, H. Tatsuoka, Y. Okano, T. Ozawa, S. Moorthy Babu, Y. Inatomi and Y. Hayakawa, "Analysis of dissolution and growth process of SiGe alloy semiconductor based on penetrated X-ray intensities", J. Alloy and Compounds, 590, pp.96-101 (2014).
- Y. Takagi, Y. Okano, H. Minakuchi and S. Dost, "Combined effect of crucible rotation and magnetic field on hydrothermal wave", J. Crystal Growth, 385, pp.72-76 (2014).
- M. Nobeoka, Y. Takagi, Y. Okano, Y. Hayakawa and S. Dost, "Numerical simulation of InGaSb crystal growth by temperature gradient method under normal- and micro-gravity fields", 385, pp. 66-71, J. Crystal Growth (2014).
- H. Minakuchi, Y. Takagi, Y. Okano, S. Gima and S. Dost, "The relative contributions of thermo-solutal Marangoni convections on flow patterns in a liquid bridge", J. Crystal Growth, 385, pp. 61-65 (2014).

**<2013>**

- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Numerical investigation for the effect of the liquid film volume on thermocapillary flow direction in a thin circular liquid film", Phys. Fluids
**,**25, 082108(2013). - T. Ban, T. Yamagami, H. Nakata and Y. Okano, "pH-dependent motion of self-propelled droplets due to Marangoni effect at neutral pH", Langmuir, 29, 2554-2561 (2013).

**<2012>**

- Y. Takagi, Y. Okano, M. Miyagawa and N. Katayama, "Numerical and Physical Experiments on Drag Torque in a Wet Clutch", Tribology Online, 7, pp.242-248 (2012).
- T. Ban, T. Yamagami and Y. Furumichi, "Transient pore dynamics in pH-responsive liquid membrane", Langmuir, 28, 10682-10687 (2012).
- R. Okuizumi, S. Hirota, M. Sudoh and Y. Okano, "Development of a measurement system of laser efficiency in the crystalline polymer welding process", J. Adv. Res. Phys., 3(1), 011212 (2012).
- Y. Takagi, N. Suzuki, Y. Okano, A. Tanaka, Y. Hayakawa and S. Dost, "Numerical simulation of the dissolution process of GaSb into InSb melt under normal and microgravity conditions", Trans. JSASS Aerospace Tech. Japan, 10, pp. Ph_1-Ph_7 (2012).
- H. Minakuchi, Y. Takagi, Y. Okano, T. Nosoko, S. Gima and S. Dost, "Three-dimensional numerical simulation of thermal and solutal Marangoni convection in a liquid bridge under zero-gravity field", Trans. JSASS Aerospace Tech. Japan, 10, pp. Ph_15-Ph_20 (2012).
- Y. Takagi, K. Takeda, Y. Okano, T. Eguchi, K. Hirota, "Transport phenomena during the fast filling process in a hydrogen tank for the fuel cell vehicle", J. Adv. Res. Phys., 3(1), 011206 (2012).
- H. Minakuchi, Y. Takagi, Y. Okano, K. Mizoguchi, S. Gima, S. Dost, "A grid refinement study of half-zone configuration of the Floating Zone growth system", J. Adv. Res. Phys., 3(1), 011201 (2012).
- K. Oshima, N. Sugie, K. Takeda, Y. Okano, Y. Takagi, T. Eguchi, K. Hirota, "Search for the shortest possible time sequence using optimal contrl theory", J. Adv. Res. Phys., 3(1), 011202 (2012).
- T. Fukami, K. Takeda, Y. Okano, Y. Takagi, T. Eguchi, K. Hirota, "Development of a method for making successive approximate curved surface considering dynamic behavior", J. Adv. Res. Phys., 3(1), 011203 (2012).
- M. Arivanandhan, G. Rajesh, A. Tanaka, T. Ozawa, Y. Okano, Y. Inatomi and Y. Hayakawa, "Bulk growth of InGaSb alloy semiconductor under terrestrial conditions: A Preliminary study for microgravity experiments at ISS", Defect and Diffusion Forum, 323-325, pp.539-544 (2012).
- T. Ban, T. Yamada, A. Aoyama, Y. Takagi and Y. Okano, "Composition-dependent shape changes of self-propelled droplets in a phase-separating system", Soft Matter, 8 (14), pp.3908 - 3916 (2012).
- Y. Takagi, Y. Okano and S. Dost, "A numerical simulation study of the effects of crucible rotation and magnetic fields in growth of SiGe by the traveling heater method", J. Heat Transfer, 134, 012301 (2012).

**<2011>**

- K. Oomiya, D. Mori, T. Ban and A. Shioi, "Spontaneous periodic pulsation of contact line in oil/water system - Frequency control with divalent cations and applied voltage", J. Colloid Interface Sci., 362, pp.553-559 (2011).
- T. Hosohama, K. Megumi, S. Terakawa, J. Nishimura, Y. Iida, T. Ban and A. Shioi, "Ion-selective Marangoni instability coupled with the nonlinear adsorption/desorption rate", Langmuir, 27, pp.14131-14142 (2011).
- Y. Takagi, H. Nakata, Y. Okano, M. Miyagawa and N. Katayama, “Effect of two-phase flow on drag torque in a wet clutch”, J. Adv. Res. Phys., 2, 2, 021108 (2011).
- M. Arivanandhan, G. Rajesh, T. Koyama, Y. Momose, K. Sankaranarayanan, A. Tanaka, Y. Hayakawa, T. Ozawa, Y. Okano and Y. Inatomi, “Crystal growth of InGaSb alloy semiconductor at International Space Station: preliminary experiment”, J. Jpn. Soc. Microgravity Appl., 28, 2, pp.S46-S50 (2011).
- Y. Takagi, A. Sone, K. Mizoguchi, Y. Okano, R. Okuizumi, M. Kada, S. Hirota and Y. Tajima, “Numerical investigation of the limiting sliding condition of polyoxymethylene with various sliding geometry”, Adv. Materials Res., 222, pp.247-250 (2011).
- R. Okuizumi, S. Hirota, Y. Takagi, M. Sudoh and Y. Okano, “Process analysis of laser welding method with polybutyleneterephthalate (PBT)”, Adv. Materials Res., 222, pp.150-153 (2011).
- G. Rajesh, M. Arivanandhan, N. Suzuki, A. Tanaka, H. Morii, T. Aoki, T. Koyama, Y. Momose, T. Ozawa, Y. Inatomi, Y. Takagi, Y. Okano, Y. Hayakawa, “Effects of solutal convection on the dissolution of GaSb into InSb melt and solute transport mechanism in InGaSb solution: Numerical simulations and in-situ observation experiments”, J. Crystal Growth, 324, pp.157-162 (2011).

**<2010>**

- Y. Takagi, T. Mori, Y. Okano, M. Kada, S. Hirota, R. Okuizumi and Y. Tajima, "A numerical simulation for the sliding surface temperature of Polyoxymethylen", Tribology Online, 5, pp.123-128 (2010).

**International conferences**

**<2017>**

- K.Nishida, T. Yamamoto, M. Zamengo, Y. Kato, Y. Okano, "Numerical Simulation of Heat Transfer in a Packed Bed Reactor for Magnesium Hydroxide Thermochemical Energy Storage", 24th Regional Symposium On Chemical Engineering (RSCE2017), November 15-16 (2017), Semarang, Indonesia.
- X. Jin, T.Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa, "Numerical study of InGaSb crystal growth under zero-gravity on the International Space Station (ISS) (Best Poster Award)", The 8 th China-Japan Symposium on Chemical Engineering, October 14-15 (2017), Beijin, China.
- L. Wang, T.Yamamoto, Y. Okano and T. Ujihara, "Numerical simulation of SiC crystal growth in the TSSG system with steady magnetic fields (Best Poster Award)", The 8 th China-Japan Symposium on Chemical Engineering, October 14-15 (2017), Beijin, China.
- M. Yano, T. Yamamoto, Y. Okano, M. Kino-oka, "Numerical simulation of iPS cell behavior in a suspension culture using CFD-DEM", The 10th World Congress of Chemical Engineering (WCCE10), October 1-5 (2017), Barcelona, Spain.
- Y. Imai, T. Yamamoto, Y. Okano, R. Sato and Y. Shigeta, "Numerical Investigation of the Differences of the nano-scale Solutal Marangoni Convection between MD and CFD Simulations", The 17th Congress of the Asian-Pacific Confederation of Chemical Engineering (APCChE17), August 23-27 (2017), Hong Kong, China.
- T. Yamamoto, Y. Okano, T. Ujihara and S. Dost, "Numerical simulation of the transport phenomena occuring during the growth of SiC crystals by the RF-Heating TSSG method", Asian Conference on Thermal Sciences 2017 (1st ACTS) , March 26-30 (2017), Jeju, Korea.
- Y. Imai, T. Yamamoto, Y. Okano, R. Sato and Y. Shigeta, "Numerical investigation of solutal Marangoni convection in a nano scale and comparison with that in a macr scale (Student Presentation Award)", 6th International Symposium on Micro and Nano Technology (ISMNT), March 19-22 (2017), Fukuoka, Japan.

**<2016>**

- Y. Imai, T. Yamamoto, Y. Okano, R. Sato and Y. Shigeta, "Molecular dynamics simulation of atomic-scale solutal Marangoni convection", 23rd Regional Symposium on Chemical Engineering (RSCE2016), Oct. 27-28 (2016), Vung Tau City, Vietnam.
- M. Yano, T. Yamamoto, Y. Okano, T. Kanamori and M. Kino-Oka, "Numerical study of fluid dynamics and particle behaviour in an iPS cell culture tank", 23rd Regional Symposium on Chemical Engineering (RSCE2016), Oct. 27-28 (2016), Vung Tau City, Vietnam.
- Y. Okano, "Field transport phenomena in material processing under microgravity field (Plenary)”, 23rd Regional Symposium on Chemical Engineering (RSCE2016), Oct. 27-28 (2016), Vung Tau City, Vietnam.
- Y.Inatomi, V. Nirmal Kumar, M. Arivanandhan, G. Rajesh, K.Sakata, T. Koyama, Y. Momose, Y. Okano and Y Hayakawa, "Growth and dissolution rates of InGaSb crystal under reduced convection condition", 11th Asian Microgravity Symposium, Oct. 25-29 (2016), Hokkaido University, Sapporo, Japan.
- X. Jin, T. Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y.Hayakawa and S. Dost, "A Numerical simulation study for sredicting the dissolution length in growth of InGaSb under the microgravity conditions of the ISS", 11th Asian Microgravity Symposium, Oct. 25-29 (2016), Hokkaido University, Sapporo, Japan.
- L. Wang, Y. Takagi and Y. Okano, "Numerical study on the influence of turbulent structure in a channel with permeable rough walls on drag reduction", The 7th International Symposium on Fluid Machinery and Fluid Engineering (ISFMFE 2016) , Oct. 18-22 (2016), Lotte city Hotel, Jeju, Korea.
- Y. Okano, Y. Takagi, T. Ohata, Z.K. Sanchez and K. Kinbara, "Numerical investigation of the effect of fluid flow on biofilm formation in a channel with varying cross- section", Recent Global Research and Education:Technological Challenges, pp.151-157, Sep. 26-28 (2016), Warsaw University of Technology, Poland.
- P. V. Stoyanova, Y. Takagi and Y. Okano, "Numerical investigation of drag reduction by hydrogel with trapped water layer", Recent Global Research and Education:Technological Challenges, pp.189-195, Sep. 26-28 (2016), Warsaw University of Technology, Poland.
- M. Yano, T. Yamamoto, Y. Okano, T. Kanamori, M. Kino-oka, "Investigation of particle behavior in a stirred tank for optimization of suspension culture of iPS cell", The 27th International Symposium on Transport Phenoma (ISTP-27), ISTP27-093, Sep. 20-23 (2016), Honolulu, Hawaii, United States.
- X. Jin, T. Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa and S. Dost, "A numerical study on the growth process of InGaSb crystals under microgravity onboard the international space station", The 18th International Conference on Crystal Growth and Epitaxy (ICCGE-18), TuP-G10-7 (poster), Aug. 7-12 (2016), Nagoya, Japan.
- H. Minakuchi, Y. Okano and S. Dost, "Effect of thermo-solutal Marangoni convection on zzimuthal wave number in a liquid bridge", The 18th International Conference on Crystal Growth and Epitaxy (ICCGE-18), TuP-G10-9 (poster), Aug. 7-12 (2016), Nagoya, Japan.
- N. Adkar, T. Yamamoto, Y. Okano, T. Ujihara and S. Dost, "Numerical investigation of transport phenomena during crystal growth of SiC by the induction heating TSSG method", The 18th International Conference on Crystal Growth and Epitaxy (ICCGE-18), ThP-T10-1 (poster), Aug. 7-12 (2016), Nagoya, Japan.
- T. Yamamoto and Y. Okano, "Numerical investigation of Marangoni convection in a micro-scale environment", The First Pacific Rim Thermal Engineering Conference (PRTEC), PRTEC-14769, March 13-17 (2016), Waikoloa Beach Marriott Resort & Spa, Hawaii's Big Island, USA.

**<2015>**

- S. Okamoto, Y. Takagi and Y. Okano, "Interaction between phase separation and turbulence in binary mixture", 2015 Asian Symposium on Computational Heat Transfer and Fluid Flow (ASCHT2015), ASCHT15-Wed03-005, November 22-25 (2015), BEXCO, Busan, Korea.
- Y. Takagi and S. Okamoto, "Suppression of turbulent energy cascade due to phase separation in homogenous binary mixture fluid", 68th Annual Meeting of the APS Division of Fluid Dynamics (APS DFD 2015), M22.00010, November 22-24 (2015), Hynes Convention Center, Boston, United States.
- H. Suzuki, T. Yamamoto, Y. Takagi, Y. Okano, S. Sugiura, K. Sumaru, T. Kanamori and M. Kino-oka, "Numerical modeling of iPS cell culture based on mass transfer in a culture environment", APCChE 2015 Congress incorporating Chemeca 2015, Paper no. 3137960, September 27 – October 1 (2015), Victoria, Melbourne, Australia.
- X. Jin, H. Mirsandi, T. Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa, and S. Dost, "Numerical simulation of InGaSb crystals growth under micro-gravity environment onboard the International Space Station," PY2-4, Inter-Academia 2015, September 28-30 (2015), Hamamatsu, Japan.
- Y. Okano, H. Suzuki, T. Yamamoto, Y. Takagi, S. Sugiura, K. Sumaru, T. Kanamori, and M. Kino-oka, "Numerical Modelling on iPS Cell Culture Based on Transport Phenomena in a Culture Environment", The 22nd Regional Symposium on Chemical Engineering (RSCE 2015), IN-FOO-007, September 24-25 (2015), Bangkok, Thailand.
- M. Nishitani, T. Yamamoto, Y. Takagi, K. Kimbara, and Y. Okano, "Three-dimensional numerical simulation of the effect of the fluid flow on biofilm growth", The 22nd Regional Symposium on Chemical Engineering (RSCE 2015), IN-FOO-008, September 24-25 (2015), Bangkok, Thailand.
- N. Adkar, T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Numerical simulation of the effect of the free surface shape on Marangoni convection in a ring-shaped liquid film with low Prandtl number", Fl-ST(A)-P07, The joint conference of 6th International Symposium on Physical Science in Space (ISPS6) and 10th International Conference on Two-Phase Systems for Space and Ground Applications (ITTW2015), September 14-18 (2015), Doshisha University, Kyoto, Japan.
- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Liquid film volume effect on unsteady thermocapillary flow due to Hydrothermal Wave in a thin circular liquid film", 16FlMa-13, The joint conference of 6th International Symposium on Physical Science in Space (ISPS6) and 10th International Conference on Two-Phase Systems for Space and Ground Applications (ITTW2015), September 14-18 (2015), Doshisha University, Kyoto, Japan.
- X. Jin, H. Mirsandi, T. Yamamoto, Y. Takagi, Y. Okano, Y. Inatomi, Y. Hayakawa and S. Dost, "A Numerical Simulation Study on the Growth Process of InGaSb Crystals under Microgravity by Using OpenFOAM", 30th The International Symposium on Space Technology and Science, 2015-h-11, June 4-10 (2015), Kobe, Japan.
- Y. Takagi, M. Nakamoto and Y. Okano, "Drag reduction effect due to finite permeable wall in turbulent channel flow", The ninth Symposium on Turbulence and Shear Flow Phenomena (TSFP-9), June 30 - July 3 (2015), The University of Melbourne, Melbourne, Australia.
- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Verification and validation of thermocapillary flow instability in straight and deformed liquid bridges", OpenFOAM Workshop 2015, June 29 - July 2 (2015), University of Michigan, Ann Arbor, United States.
- Y. Takagi, Y. Okano and N. Kato, "Numerical prediction for the methane gas rising from seabed in deep water", The Twenty-fifth (2015) International Ocean and Polar Engineering Conference (ISOPE-2015), June 21-27 (2015), Kona, Hawaii Big Island, United States.
- T. Ochi, Y. Takagi, Y. Okano and N. Kato, "The effect of liquid-gas interactions on plume structures in blowout", The Twenty-fifth (2015) International Ocean and Polar Engineering Conference (ISOPE-2015), June 21-27 (2015), Kona, Hawaii Big Island, United States.
- Y. Takagi, A. Yamada, W. P. Kyaw, Y. Okano and N. Kato, "Numerical and experimental studies on multiphase flow in tsunami with oil spill", International Symposium on Natural Disaster Impacts to Large Industrial Parks (NDIIP), March 11-12 (2015), Osaka, Japan.

**<2014>**

- Y. Takagi, "Suppression of self-organized structure coarsening in homogenous isotropic turbulence", E25.00006, American Physical Society 67th Annual Meeting Division of Fluid Dynamics, November 23-25, Sanfrancisco, California, United States.
- Y. Takagi, Y. Okano and N. Kato, "Effect of liquid-gas interaction on plume structure in blowout flow", 130, The 25th International Symposium on Transport Phenomena (ISTP-25), November 5-7 (2014), Krabi, Thailand.
- H. Suzuki, Y. Nashiki, T. Yamamoto, Y. Takagi, Y. Okano, S. Sugiura, K. Sumaru, T. Kanamori and M. Kino-oka, "Development of a simulation code for iPS cell culture considering concentration profiles in a culture medium" , 23, The 25th International Symposium on Transport Phenomena (ISTP-25), November 5-7 (2014), Krabi, Thailand.
- R. Takamura, T. Yamamoto, Y. Takagi, Y. Okano, S. Nii, T. Kinoshita, Y. Ishigaki, N. Shibata and S. Kitagawa, "Numerical study of transport phenomena in a continuous counter-current foam separation", 51, The 25th International Symposium on Transport Phenomena (ISTP-25), November 5-7 (2014), Krabi, Thailand.
- Y. Okano, H. Mirsandi, Y. Inatomi, Y. Hayakawa and S. Dost, "A numerical study on the growth process of InGaSb crystal under microgravity with interfacial kinetics", O47, 10th Asian Microgravity Symposium, October 28-31 (2014), Hotel President, Seoul, Korea.
- M. Nakamoto, Y. Takagi and Y. Okano, "Relationship between turbulent structures and frictional drag in turbulent channel flow with the thin porous wall", 10th International ERCOFTAC Symposium on Engineering Turbulence Modelling and Measurements (10th ETMM), September 17-19 (2014), Don Carlos Resort, Marbella, Spain.
- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, "Numerical investigation for the direction of thermocapillary flow in a cooled circular water film", Proc. IMA7 (7th Conference of the International Marangoni Association), 126, June 23-26 (2014), Vienna University of Technology, Austria.
- H. Mirsandi and Y. Okano, "Numerical simulation of InGaSb crystal growth", The 1st Japan-China Workshop on Microgravity Sciences, February 8 (2014), Shizuoka University, Hamamatsu, Japan.
- Y. Takagi, S. Kawahara, T. Ban, Y. Okano and N. Kato, "Numerical investigation of ambient flow effect on oil/gas spill in deep water", 3-84, 2014 Gulf of Mexico Oil Spill and Ecosystem Science Conference, January 26-29 (2014), Mobile, Alabama, United States.

**<2013>**

- R. Takamura, T. Yamamoto, Y. Takagi, and Y. Okano, “Two-dimensional numerical investigation of the flow pattern in a continuous counter-current foam separation”, The 26th International Symposium on Chemical Engineering (ISChE 2013), OF-04, December 6-8 (2013), BEXCO in Busan, Korea.
- H. Mirsandi, Y. Takagi, T. Yamamoto, Y. Inatomi, Y. Hayakawa, S. Dost and Y. Okano, “A numerical simulation study on the interface kinetics during the growth process of InGaSb crystal”, The 26th International Symposium on Chemical Engineering (ISChE 2013), OD-08, December 6-8 (2013), BEXCO in Busan, Korea.
- T. Ban, “pH-dependent motion of self-propelled droplets due to Marangoni effect”, World Congress on Petrochem. and Chem. Eng. 2013, Nov. 18-20 (2013), Hilton San Antonio Airport, Unitated States (invited lecture).
- K. Iwamura, Y. Takagi, T. Yamamoto and Y. Okano, “Numerical investigation of the turbulent drag reduction effect by the surface shape optimization of electric wire”, The 20th Regional Symposium on Chemical Engineering (RSCE 2013), G3, November 12-13 (2013), Bohol, Philippines.
- K. Tani, H. Nakata, T. Ban and Y. Okano, “Hunting rare-earth metal ions with self-propelled droplet with pH-responsive function”, The 24th International Symposium on Transport Phenomena (ISTP-24), November 1-5 (2013), Yamaguchi, Japan.
- T. Yamamoto, Y. Takagi, Y. Okano and S. Dost, “Numerical investigation for the thermocapillary flow observed in “Saturday-Morning-Science” conducted by Dr. Donald Pettit”, 29th American Society for Gravitational and Space Research and 5th International Symposium for Physical Science in Space (ASGSR/ISPS5), C49.1, November 3-8 (2013), Hilton Orlando, United States.
- T. Ban, H. Nakata, K. Tani, Y. Takagi, Y. Okano, "pH control of self-propelled droplets", International Soft Matter Conference 2013 (ISMC2013), Sep. 15-19 (2013), Rome, Italy.
- T. Ohata, Y. Takagi, Y. Okano, Z. K. Sanchez, M. Shintani, K. Kimbara, "Numerical investigation of biofilm formation under fluid flow in a micro-channel with steps", 3rd Asia-Pacific Chemical and Biological Microfluidics Conferences (APCBM2013), Aug. 19-22 (2013), Seoul, Korea.
- Y. Takagi, M. Nakamoto and Y. Okano, "Numerical study on turbulent drag reduction in channel flow with non-uniform slip wall responding shear stress", 9th World Congress of Chemical Engineering Incorporating 15th Asian Pacific Confederation of Chemical Engineering Congress (WCCE9&APCChE2013), Aug. 18-23 (2013), Seoul, Korea.
- O. Muthusamy, A. Mukannan, A. K. Raman, H. Morii, T. Aoki, T. Koyama, Y. Momose, H. Ikeda, H. Tatsuoka, Y. Okano, T. Ozawa, Y., M. B. Sridharan, Y. Hayakawa, "Investigation on growth mechanism of SiGe by X-ray penetration method", The 32nd International Conference on Thermoelectrics, June 30-4 (2013), Kobe, Japan.
- Y. Takagi, M. Nakamoto and Y. Okano, "Numerical investigation of the drag reduction mechanism in turbulent channel flow with local slip velocity", The Asian Symposium on Computational Heat Transfer and Fluid Flow 2013 (ASCHT'13), June 3-6 (2013), Hong Kong, China.
- T. Yamamoto, "A three-dimensional simulation of thermocapillary flow in a circular thin liquid film under zero gravity", 29th International Symposium on Space Technology and Science (29th ISTS), June 2-9 (2013), Nagoya, Japan (Modi Memorial Jaya-Jayant Award).
- Y. Takagi, T. Ban, Y. Okano, S. Kunikane, S. Kawahara, N. Kato and K. Ohgaki, "Numerical modeling of methane hydration and droplet transport for deepwater oil spill", Gulf of Mexico Oil Spill and Ecosystem Science Conference, Jan. 21-23 (2013), New Orleans, United States.

**<2012>**

- T. Yamamoto, Y. Takagi, T. Ban, Y. Okano, H. Minakuchi and S. Dost, "Numerical investigation for the effect of meniscus geometry on thermocapillary flow in a thin liquid film", 23th International Symposium on Transport Phenomena (ISTP-23), Nov. 19-22 (2012), The University of Auckland, New Zealand.
- T. Ban, S. Makino, R. Ishii, Y. Takagi, Y. Okano, "Deformation dynamic of a self-propelled droplet in a phase-separating system", 10th Japan-Korea Symposium on Materials and Interfaces, Nov. 7-10 (2012), Kyoto, Japan.
- M. Nobeoka, Y. Takagi, T. Ban, Y. Okano, Y. Hayakawa, A. Tanaka and S. Dost, "A numerical simulation study of crystal growth of In
_{x}Ga_{1-x}Sb alloy semiconductor by the temperature gradient method under normal- and micro-gravity", 7th International Workshop on Modeling in Crystal Growth (IWMCG-7), Oct. 28-31 (2012), Taipei, Taiwan (Best Poster Award). - Y. Takagi, Y. Niboshi, T. Ban, Y. Okano, H. Minakuchi and S. Dost, "Combined effect of crucible rotation and magnetic field on hydrothermal wave", 7th International Workshop on Modeling in Crystal Growth (IWMCG-7), Oct. 28-31 (2012), Taipei, Taiwan.
- H. Minakuchi, Y. Takagi, Y. Okano, S. Gima and S. Dost, "The relative contributions of thermo-solutal Marangoni convections on flow patterns in a liquid bridge", 7th International Workshop on Modeling in Crystal Growth (IWMCG-7), Oct. 28-31 (2012), Taipei, Taiwan.
- H. Minakuchi, Y. Takagi, Y. Okano, S. Gima and S. Dost, "A Numerical study of oscillatory thermo-solutal Marangoni convection in a floating half zone", Int. Symp. Turbulence, Heat and Mass Transfer 7, Sep. 24-27 (2012), Palermo, Sicily, Italy.
- Y. Takagi, T. Ban, Y. Okano, S. Kunikane, S. Kawahara, N. Kato and K. Ohgaki, "Numerical tracking of methane gas/hydrate and oil droplet in deep water spill", InterAcademia 2012, Aug. 27-30 (2012), Budapest, Hungary.
- T. Ban, S. Makino, R. Ishii, Y. Takagi and Y. Okano, "Deformation of self-propelled droplets induced by Korteweg Force", Gordon Research Conferences on Oscillations & Dynamic Instabilities in Chemical Systems, July (2012), Waterville, United States.
- M. Arivanandhan, A. Tanaka, T. Koyama, Y. Momose, T. Ozawa, Y. Okano, K. Sakata, Y. Inatomi and Y. Hayakawa, "Growth of In
_{x}Ga_{1-x}Sb alloy semiconductor under terrestrial and microgravity conditions", National Conf. Phys. New Materials (NCPNN-2012), Invitated talk, Tamil Nadu, Inidia, April 20-21 (2012). - N. Kato, H. Senga, H. Suzuki, Y. Okano, T. Ban, Y. Takagi, M. Yoshie, T. Tanaka, N. Sakagami, "Autonomous spilled oil and gas tracking buoy system and application to marine disaster prevention system", The Interspill Conference 2012, Mar. 13-15 (2012), London, UK.
- H. Minakuchi, Y. Okano, K. Mizoguchi, S. Gima and S. Dost, "Alternate effects of thermo-solutal Marangoni convection on flow patterns in a floating half zone", The 14th Asia Pacific Conf. Chem. Eng. (APCChE 2012), Feb. 21-24 (2012), Singapore.
- Y. Hayakawa, M. Arivanandhan, M. Omprakash, T. Koyama, Y. Momose, H. Ikeda, A. Tanaka, H. Tatsuoka, A. Ishida, Y. Okano, Y. Inatomi, D. K. Aswal, S. Bhattacharya, D. Thangaraju and S. Moorthy Babu, "Growth of homogeneous Si
_{1-x}Ge_{x}and Mg_{2}Si_{1-x}Ge_{x}for thermoelectric application", Int. Conf. Recent Trend in Adv. Materials, pp.8, Feb. 20-22 (2012), Vellore, India.

**<2011>**

- Y. Takagi, T. Ban, Y. Okano, R. Okuizumi, M. Kada, S. Hirota and Y. Tajima, "Numerical estimation of limiting condition for polyoxymethylene with sliding surface temperature", The 5th SCEJ (Kansai-Branch)/SSCCI Joint Int. Conf. Chem. Eng., Dec. 9 (2011), Fukui, Japan.
- Y. Takagi, H. Nakata, Y. Okano, M. Miyagawa and N. Katayama, "Effect of two-phase flow on drag torque in a wet clutch", Inter-Academia 2011, Sep. 26-29 (2011), Iasi, Romania.
- Y. Takagi, K. Takeda, Y. Okano, T. Eguchi and K. Hirota, "Transport phenomena during the fast filling process in a hydrogen tank for the fuel cell vehicle", Inter-Academia 2011, Sep. 26-29 (2011), Iasi, Romania.
- H. Minakuchi, Y. Takagi, Y. Okano, K. Mizoguchi, S. Gima and S. Dost, "Grid refinement study of half-zone configuration of the floating zone growth", Inter-Academia 2011, Sep. 26-29 (2011), Iasi, Romania.
- K. Oshima, N. Sugie, K. Takeda, Y. Okano, Y. Takagi, T. Eguchi and K. Hirora, "Search for the shortest possible time sequence using optimal control theory", Inter-Academia 2011, September 26-29 (2011), Iasi, Romania.
- T. Fukami, K. Takeda, Y. Okano, Y. Takagi, T. Eguchi and K. Hirota, "Development of method for making successive approximate curved surface considering dynamic behaviour", Inter-Academia 2011, September 26-29 (2011), Iasi, Romania.
- Y. Takagi, Y. Okano, M. Miyagawa and N. Katayama, "Combined numerical and experimental study on drag torque in a wet clutch", ASME-JSME-KSME Joint Fluids Eng. Conf. 2011 (AJK2011), July 24-29 (2011), Hamamatsu, Shizuoka, Japan.
- T. Ban and T. Yamada, "Shape transitions of self-propelled droplets induced by Korteweg force", Engineering of Chemical Complexity, July 4-8 (2011), Berlin, Germany.
- Y. Takagi, N. Suzuki, Y. Okano, A. Tanaka, Y. Hayakawa and S. Dost, "Numerical simulation of the dissolution process of GaSb into InSb melt under normal and microgravity conditions", The 28th Int. Symp. Space Tech. Sci. (28th ISTS), June 5-12 (2011), Okinawa, Japan.
- H. Minakuchi, Y. Takagi, Y. Okano, T. Nosoko, S. Gima, S. Dost, "Three-dimensional numerical simulation of thermal and solutal Marangoni convection in a liquid bridge under zero-gravity field", The 28th Int. Symp. Space Tech. Sci. (28th ISTS), June 5-12 (2011), Okinawa, Japan.
- Y. Inatomi, K. Sakata, Y. Hayakawa, A. Tanaka, T. Ozawa, Y. Okano, T. Ishikawa, M. Takayanagi, S. Yoda, Y. Yoshimura, "Current state of alloy semiconductor crystal growth project under microgravity", The 28th Int. Symp. Space Tech. Sci. (28th ISTS), June 5-12 (2011), Okinawa, Japan.
- Y. Takagi, N. Sugie, K. Takeda, Y. Okano, T. Eguchi and K. Hirota, "Numerical Investigation of the thermal behavior in a hydrogen tank during fast filling process", The ASME/JSME 2011 8th Thermal Eng. Joint Conf. (AJTEC2011), March 13-17 (2011), Honolulu, Hawaii, USA.

**<2010>**

- Y. Hayakawa, M. Arivanandhan, G. Rajesh, A. Tanaka, T. Ozawa, Y. Okano, K. Sankaranarayanan and Y. Inatomi, "Alloy semiconductor crystal growth under microgravity", Proc. Int. Conf. Phys. Emerging Functional Materials (PEFM-2010), CP1313 (2010).
- Y. Takagi and Y. Okano, "Roll of computer simulation in chemical engineering", The 4th SCEJ (Kansai-Branch)/SSCCI Joint Int. Conf. Chem. Eng., Nov. 10 (2010), Shanghai, China.
- R. Okuizumi, S. Hirota, Y. Takagi, A. Tanaka, M. Sudoh and Y. Okano, "The study of the thermal diffusion in a laser welding of thermoplastic polymer", The 21th Int. Symp. Transport Phenomena (ISTP-21), 120, Nov. 2-5 (2010), Kaosiung City, Taiwan.
- Y. Takagi and Y. Okano, "Effect of rotation on hydrothermal wave in a thin annular pool", The 13th Asia Pacific Conf. Chem. Eng. Cong., 10478, Oct. 5-8 (2010), Taipei, Taiwan.
- R. Okuizumi, S. Hirota, Y. Takagi, M. Sudoh and Y. Okano, "Process analysis of laser welding method with polybutyleneterephthalate (PBT)", Inter-Academia 2010, Aug. 9-12 (2010), Riga, Latvia.
- Y. Takagi, A. Sone, K. Mizoguchi, Y. Okano, R. Okuizumi, M. Kada, S. Hirota and Y. Tajima, "Numerical investigation of the limiting sliding condition of polyoxymethylene with various sliding geometry", Inter-Academia 2010, Aug. 9-12 (2010), Riga, Latvia.
- Y. Takagi, A. Ishida, Y. Okano and S. Dost, "A numerical simulation study on the effects of crucible rotation and magnetic fields in growth of SiGe by the travelling heater method", The 14th Int. Heat Transfer Conf. (IHTC-14), IHTC14-23025, Aug. 8-13 (2010), Washington, DC, USA.
- R. Motomura, Y. Takagi, Y. Okano, N. Armour and S. Dost, "Numerical simulation for convective effect on silicon transport and dissolution in a germanium melt", 217th ECS Meeting, MA2010-01, April 25-30 (2010), Vancouver, Canada.

**Books**

**<1990~>**

- Y. Okano and S. Dost：Modelling the THM crystal growth process under crucible rotation and magnetic fields in "Crystal Growth under Applied Fields" Edited by S. Dost and Y. Okano, Transworld Research Network, pp.193-214 (2007).
- Y. Hayakawa, K. Balakrishnan, K. Arafune, T. Ozawa, Y. Okano, A. Hirata and M. Kumagawa：Microgravity experiments on dissolution and crystallization of InGaSb in "Crystal Growth under Microgravity" Edited by Y. Hayakawa, Transworld Research Network, pp.1-50 (2005).
- Y. Okano and S. Dost： Numerical study of transport phenomena in crystal growth under microgravity fields in "Crystal Growth under Microgravity" Edited by Y. Hayakawa, Transworld Research Network, pp.51-79 (2005).
- N. Imaishi, T. Tsukada, M. Hozawa, Y. Okano and A. Hirata: Study of the Czochralski Growth of Oxide Single Crystal in "Heat and Mass Transfer in Materials Processing", Hemisphere, pp.123-136 (1992).