Doctor of Engineering, Shinshu University

@

1989, Tokyo Institute of Technology, Faculty of Engineering

Droplet Formation by Oozing a Solution From Silicone Rubber for the Preparation of Drug Particles with a Narrow Size Distribution
Masashi Watanabe, Mio Kimura
ACS Omega, 10, 46435-46441, 2025, Refereed
Lead

Formation of aligned needle-like crystals of 9,10-dibromoanthracene in small droplets
Masashi Watanabe
J. Appl. Polym. Sci., 140(41), e54515, Nov. 2023

Coil Formation of a Silicone String Using UV–Ozone Treatment
Masashi Watanabe, Toshiki Tokutake, Ai Harada, Masatoshi Kaminaga
ACS OMEGA, 7(13), 11363-11370, 2022

Preparation of drug microparticles with a narrow size distribution using regular dimples induced by buckling instability
Masashi Watanabe, Hirokazu Tazawa, Kanako Suganuma
Appl. Surface Sci., 563, 150251, 2021

Fabrication of regular arrays of organic crystalline needles using creases formed on oxidized poly(dimethylsiloxane) surfaces
Masashi Watanabe, Yuki Koga, Hiroko Ichikawa
J. Appl. Polym. Sci., 136, 47736, 2019

Preparation of Wrinkled Nanoribbons Consisting of　Langmuir-Blodgett Films
Masashi Watanabe
J. Nanosci. Nanotechnol., 19(9), 5954-5960, 2019

Facile method to align crystalline needles composed of organic semiconducting materials using a balance between centrifugal and capillary forces
Masashi Watanabe, Kouhei Tanaka
Bulletin of Materials Science, 40(6), 1127–1136, 2017

Spontaneous formation of discrete arrangement of particles by dipping ultraviolet/ozone-treated poly(dimethylsiloxane) substrate in solution
Masashi Watanabe, Toshihiro Nishino
J. Appl. Polym. Sci., 133(23), 43506, 2016

Spontaneous formation of interdigitated array pattern in wrinkled gold films deposited on poly(dimethylsiloxane) elastomer
Masashi Watanabe, Ryou Hatano, Chiho Koizumi
Polym. J., 47(4), 320-327, 2015

Area-Selective Microwrinkle Formation on Poly(dimethylsiloxane) by Treatment with Strong Acid
Masashi Watanabe and Ryoma Hashimoto
J. Polym. Sci. Part B. Polym. Phys., 53(3), 167-174, 2015

Self-Structured Serrated Edges of Chemically Oxidized Poly(dimethylsiloxane) Disks
M. Watanabe, K. Shinoda
J. Appl. Polym. Sci., 131, 40767, 2014

Wrinkles with a well-ordered checkerboard pattern, created using dip-coating
M. Watanabe
Soft Matter, 8, 1563-1569, 2012, Refereed

Well-Ordered Wrinkling Patterns on Chemically Oxidized Poly(dimethylsiloxane) Surfaces
Masashi Watanabe and Koujirou Mizukami
Macromolecules, 45, 7128–7134, 2012, Refereed

Microfluidic Devices Easily Created Using an Office Inkjet Printer
M. Watanabe
Microfluid. Nanofluid., 8, 403-408, 2010, Refereed

Surface-Directed Channels Filled with Organic Solvents
M. Watanabe
Lab Chip, 9, 1143-1146, 2009, Refereed

Formation of a Water–Xylene Interface in a Microchannel without Sidewalls
M. Watanabe
Anal. Chem., 81, 8213-8218, 2009, Refereed

Field-inducedBending Deformation of Various Rubber Films
M. Watanabe
Polym. Adv. Tech., 19, 276-280, 2008, Refereed

Microchannels Constructed on Hydrophobic Rough Surface
M. Watanabe
Chem. Eng. Technol., 31(8), 1196-1200, 2008, Refereed

Refreshable Microfluidic Channels Constructed Using an Inkjet Printer
M. Watanabe
Sens. Actuators B: Chemical, 122, 141-147, 2007, Refereed

Model for the Mechanism of the Bending Electrostriction in a Polyurethane Film
M. Watanabe
Jpn. J. Appl. Phys., 46(6(A)), 3495-3500, 2007, Refereed

Bending Electrostriction in Polyurethane Films Doped with Electron Acceptors
M. Watanabe
Polym. Int., 56, 1265-1271, 2007, Refereed

Behavior of bending motion of polyurethane film with carbon nanofiber as electrode
T. Hirai, M. H. Islam, M. Takasaki, M. Watanabe
J. Appl. Phys., 101(5), 053533-1-053533-5, 2007

Construction of Refreshable Microfluidic Channels and Electrophoresis Along Them
M. Watanabe
Sens. Actuators B: Chemical, 114(1), 296-300, 2006, Refereed

Preparation of Polypyrrole Film with Well-ordered Corrugation
M. Watanabe
Synth. Met., 156(39271), 597-601, 2006, Refereed

Shrink-induced Striped Pattern on a Thin Gold Film and Switching of Its Orientation
M. Watanabe
J. Appl. Polym. Sci., 101(3), 2040-2044, 2006, Refereed

Striped-Pattern Formation of a Thin Gold Film Deposited onto a Stretched Elastic Silicone Substrate
M. Watanabe
J. Polym. Sci. Part B: Polym. Phys., 43(12), 1532-1537, 2005, Refereed

Wrinkles Formed on a Thin Gold Film Deposited onto Stretched Elastic Substrates
M. Watanabe
Polym. Adv. Tech., 16(10), 744-748, 2005, Refereed

Selection of a Liquid for Swelling the Gel Coating of Electrodes for Electrohydrodynamic Pumping
M. Watanabe and A. Hara
J. Appl. Polym. Sci., 98(5), 1996-2002, 2005, Refereed

Thermal Switching of the Actuation Ability of an Electroactive Polymer Actuator
M. Watanabe, N. Wakimoto, T. Hirai, and M. Yokoyama
J. Appl. Polym. Sci., 95(6), 1566-1570, 2005, Refereed

Space Charge Distribution in Bending Electrostrictive Polyurethane Films Doped with Salts
M. Watanabe and T. Hirai
J. Polym. Sci. Part B: Polym. Phys., 42, 523-531, 2004, Refereed

Gel-coated Electrodes for an Ion DragPump
M. Watanabe, A. Hara, and T. Hirai
IEEE Trans. Dielectr. Electr. Insul., 11(1), 139-143, 2004, Refereed

Close Relationship between Bending-electrostrictive Response and Space Charge Distribution in a Polyurethane Film
M. Watanabe and T. Hirai
Jpn. J. Appl. Phys., 43(4A), 1446-1448, 2004, Refereed

Bending-electrostrictive Response of Polyurethane Films Subjected to a Reversed Electric Field
M. Watanabe and T. Hirai
J. Appl. Polym. Sci., 92(6), 3644-3650, 2004, Refereed

Polypyrrole Film with Striped Pattern
M. Watanabe and T. Hirai
J. Polym. Sci. Part B: Polym. Phys., 42(13), 2460-2464, 2004, Refereed

Effects ofplasticizers on novel electromechanical actuators with different poly(vinyl chloride) gels
M. Z. Uddin, M. Watanabe, H. Shirai, and T. Hirai
J. Polym. Sci. Part B: Polym. Phys., 41(18), 2119-2127, 2003, Refereed

A Pumping Technique Using Electrohydrodynamic Flow Inside a Gel
M. Watanabe, J. Zheng, A. Hara, H. Shirai, and T. Hirai
IEEE Trans. Dielectr. Electr. Insul., 10(1), 181-185, 2003, Refereed

Liquid-liquid Two-layer Electrohydrodynamic Flow System
M. Watanabe, H.Shirai, and T. Hirai
Sens. Actuators B: Chemical, 94(3), 264-270, 2003, Refereed

Bending Electrostriction and Space-charge Distribution in Polyurethane Films
M. Watanabe, N. Wakimoto, H. Shirai, and T. Hirai
J. Appl. Phys., 94(4), 2494-2497, 2003, Refereed

Creeping and Novel Huge Bending of Plasticized PVC; J. Robotics Mechatronics
M. Z. Uddin, M. Watanabe, H. Shirai, and T. Hirai
J. Robotics Mechatronics, 14, 118-123, 2002, Refereed

Wrinkled Polypyrrole Electrode for Electroactive Polymer Actuators
M. Watanabe, H. Shirai, and T. Hirai
J. Appl. Phys., 92(8), 4631-4637, 2002, Refereed

Dyeing Conventional and Microfiber Polyester with Disperse Dyes
M. Z. Uddin, M. Watanabe, H. Shirai, and T. Hirai
Textile Research Journal, 72(1), 77-82, 2002, Refereed

Ionic Polarization in Bending-electrostrictive Response of Polyurethane Films
M. Watanabe, H. Shirai, and T. Hirai
J. Appl. Phys., 90(12), 6316-6320, 2001, Refereed

Controlof Bending Electrostriction in Polyurethane Films by Doping with Salt
M. Watanabe, T. Kato, M. Suzuki, Y. Hirako, H. Shirai, and T. Hirai
J. Polym. Sci. Part B: Polym. Phys., 39(10), 1061-1069, 2001, Refereed

Hysteresis in Bending Electrostriction of Polyurethane Films
M. Watanabe, M. Suzuki, Y. Hirako, H. Shirai, and T. Hirai
J. Appl. Polym. Sci., 79(6), 1121-1126, 2001, Refereed

Electrically Induced Creeping and Bending Deformation of Plasticized Poly(vinyl chloride)
M. Z. Uddin, M. Yamaguchi, M. Watanabe, H. Shirai, and T. Hirai
Chem. Lett., 30(4), 360-361, 2001, Refereed

Thermal and oxidative stability of fluorinated alkyl aryl ethers
H. Fukui, K. Sanechika, M. Watanabe, and M. Ikeda
J. Fluorine Chem., 101, 91-96, 2000, Refereed

Bending electrostriction in polyurethane using in situ ultraviolet and visible spectroscopies
M. Watanabe, H. Shirai, T. Hirai, M. Suzuki, Y. Hirako
J. Appl. Phys., 88(9), 5328-5333, 2000, Refereed

Electrically Induced Rapid Deformation of Nonionic Gel
J. Zheng, M. Watanabe, H. Shirai, and T. Hirai
Chem. Lett., 29(5), 500-501, 2000, Refereed

Surface Modification of Polymer Hydrogel and its Effect on the Wall-shearing Stress in Water
M. H. Islam, H. Morikawa, N. Watanabe, M. Watanabe, T. Hirai
Wiley Polymer Networks Group Review Series, 2, 430-438, 1999, Refereed

Effects of Polymer Networks on the Bending Electrostriction of Polyurethanes
M. Watanabe, N. Takahashi, T. Ueda, M. Suzuki, Y. Amaike, and T. Hirai
Wiley Polymer Networks Group Review Series, 2, 214-221, 1999, Refereed

Polyurethane Actuators Using Bending Piezoelectricity and Bending Electrostriction
M. Watanabe, T. Hirai, T. Ueda, M. Suzuki and Y. Amaike
J. Intell. Material Syst. Struct., 10(2), 100-104, 1999, Refereed

Bending Electrostriction in Polyurethanes Containing Ions as Contaminants or Additives
M. Watanabe, T. Kato, M. Suzuki, Y. Amaike, and T. Hirai
Jpn. J. Appl. Phys., 38(8A), L872-L874, 1999, Refereed

Electric Conduction in Bending Electrostriction of Polyurethanes
M. Watanabe, M. Suzuki, Y. Amaike, and T. Hirai
Appl. Phys. Lett., 74(18), 2717-2719, 1999, Refereed

Drag reduction on a polymer gel surface
M. H. Islam, M. Watanabe, H. Morikawa, and T. Hirai
JSME International Journal, Series C, 42(3), 634-639, 1999, Refereed

Bending Deformation of Monolayer Polyurethane Film Induced by an Electric Field
M. Watanabe, M. Yokoyama, T. Ueda, T. Kasazaki, M. Hirai, and T. Hirai
Chem. Lett., 26(8), 773-774, 1997, Refereed

[2,3]-Wittig Rearrangement of Enantiomerically-defined α (Allyloxy)stannanes
K. Tomooka, M. Watanabe, T. Nakai
Tetrahedron Lett., 33, 5795-5798, 1992, Refereed

Highly Periselective [2,3]Wittig Rearrangements on Dihydrofuran and dihydropyran Rings
K. Tomooka, M. Watanabe, T. Nakai
Tetrahedron Lett., 31, 7353-7354, 1990, Refereed