Ko Okumura

Profile Information

Affiliation: Professor, Faculty of ScienceDivision of Physics, Ochanomizu University

Degree: 博士（理学）

Researcher number: 80271500
ORCID ID: https://orcid.org/0000-0002-8554-7173
J-GLOBAL ID: 200901047104827912
researchmap Member ID: 5000017337

External link: http://www-p.sci.ocha.ac.jp/okumura-phys/

Research Interests

Research Areas

Papers

133

Viscous friction acting on a solid disk falling in confined fluid: Lessons for the scaling analysis

Nana Tanaka, Ko Okumura

Physical Review Research, Sep 29, 2023
Air entrained into viscous liquid by a disk: Confinement induced suppression of breakup

Hana Nakazato, Ko Okumura

Physical Review Research, Feb 22, 2022
Inertial Coalescence of a Liquid Drop Surrounded by Viscous Liquid

Yukina Margaret Koga, Ko Okumura

Journal of the Physical Society of Japan, Feb 15, 2022
Dynamic glass transition dramatically accelerates crack propagation in rubberlike solids

Atsushi Kubo, Naoyuki Sakumichi, Yoshihiro Morishita, Ko Okumura, Katsuhiko Tsunoda, Kenji Urayama, Yoshitaka Umeno

Physical Review Materials, 5(7), Jul 29, 2021
Capillary Replacement in a Tube Prefilled with a Viscous Fluid

Julie André, Ko Okumura

Langmuir, 36(37) 10952-10959, Sep 22, 2020 Peer-reviewed
Rising Obstacle in a Two-dimensional Granular Bed Induced by Continuous and Discontinuous Vibrations: Dynamics Governed by Vibration Velocity

Mika Umehara, Ko Okumura

Journal of the Physical Society of Japan, 89(3) 035001-035001, Mar 15, 2020 Peer-reviewed
Rising bubble in a cell with a high aspect ratio cross-section filled with a viscous fluid and its connection to viscous fingering

Mayuko Murano, Ko Okumura

Physical Review Research, Feb 21, 2020 Peer-reviewed
Rising obstacle in a one-layer granular bed induced by continuous vibrations: two dynamical regimes governed by vibration velocity

Hui Zee Then, Teruyo Sekiguchi, Ko Okumura

Soft Matter, 2020 Peer-reviewed
Crack propagation under static and dynamic boundary conditions

Yuko Aoyanagi, Ko Okumura

Polymer, 185 121648-121648, Dec, 2019 Peer-reviewed
Visco- and plastoelastic fracture of nanoporous polymer sheets

Takako Tomizawa, Ko Okumura

Polymer Journal, 51(9) 845-850, Sep 9, 2019 Peer-reviewed
Continuity and discontinuity of kirigami's high-extensibility transition: A statistical-physics viewpoint

Midori Isobe, Ko Okumura

Physical Review Research, Sep 3, 2019 Peer-reviewed
Velocity jump in the crack propagation induced on a semi-crystalline polymer sheet by constant-speed stretching

Takako Tomizawa, Ko Okumura

Polymer, 173 166-171, May, 2019 Peer-reviewed
Discontinuity in the In-plane to Out-of-plane Transition of Kirigami

Midori Isobe, Ko Okumura

Journal of the Physical Society of Japan, 88(2) 025001-025001, Feb 15, 2019 Peer-reviewed
Velocity Jumps in Crack Propagation in Elastomers: Relevance of a Recent Model to Experiments

Ko Okumura

Journal of the Physical Society of Japan, 87(12) 125003-125003, Dec 15, 2018 Peer-reviewed
Crack propagation in porous polymer sheets with different pore sizes

Atsushi Takei, Ko Okumura

MRS Communications, 8(04) 1477-1482, Dec, 2018 Peer-reviewed
Velocity jump observed in crack propagation in elastomers caused by glass transition

Sakumichi Naoyuki, Kubo Atsushi, Umeno Yoshitaka, Okumura Ko

Meeting Abstracts of the Physical Society of Japan, 73 2599-2599, 2018
Granular drag friction in two dimensions

Wakabayashi Haruna, Sakumichi Naoyuki, Okumura Ko

Meeting Abstracts of the Physical Society of Japan, 73 2242-2242, 2018
An exactly solvable model for velocity jump observed in crack propagation in elastomers

Sakumichi Naoyuki, Okumura Ko

Meeting Abstracts of the Physical Society of Japan, 73 2986-2986, 2018
Bursting dynamics of viscous film without circular symmetry: The effect of confinement

Murano, M., Okumura, K.

Physical Review Fluids, 3(3), 2018 Peer-reviewed
An exactly solvable model for consecutive two velocity jumps observed in crack propagation in elastomers

Sakumichi Naoyuki, Okumura Ko

Meeting Abstracts of the Physical Society of Japan, 72 2547-2547, 2017

Misc.

153

2次元粉粒体中で障害物に働く抵抗力 III

若林晴菜, 作道直幸, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 74(2), 2019
厳密に解ける模型から導かれるゴム材料のタフ化への指針

作道直幸, 奥村剛

高分子学会予稿集(CD-ROM), 67(1), 2018
ゴムの亀裂進展における速度ジャンプ

作道直幸, 奥村剛

日本ゴム協会研究発表講演会講演要旨, 2018, 2018
ゴムの亀裂進展において速度ジャンプが生じるメカニズム

作道直幸, 奥村剛, 奥村剛, 久保淳, 梅野宜崇

高分子学会予稿集(CD-ROM), 67(2), 2018
粘弾性体における亀裂進展速度の不連続転移:可解模型による系統的分類

作道直幸, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 72(1), 2017
ゴムの亀裂進展速度の二段階ジャンプ:可解模型による理解

作道直幸, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 72(2), 2017
厳密に解ける模型から導かれるゴム材料のタフ化への指針

作道直幸, 奥村剛

日本ゴム協会研究発表講演会講演要旨, 2017, 2017
ゴムの亀裂進展速度の二段階ジャンプ:可解模型による理解

作道直幸, 奥村剛

エラストマー討論会講演要旨集, 28th, 2017
ゴムの亀裂進展速度の二段階ジャンプ:可解模型による理解

作道直幸, 奥村剛

エラストマー討論会講演要旨集, 28th, 2017
パラフィルムの亀裂進展実験と理論解析

作道直幸, 高坂あゆり, 青柳裕子, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 71(1), 2016
粘弾性体における亀裂進展速度の不連続転移:可解模型からのアプローチ

作道直幸, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 71(2), 2016
ジャミング転移近傍における2次元粉粒体中の高速引きずり抵抗則

作道直幸, 竹原由佳, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 70(2), 2015
パラフィルムの破壊実験と数値解析

作道直幸, 高坂あゆり, 青柳裕子, 奥村剛, 奥村剛

日本物理学会講演概要集(CD-ROM), 70(2), 2015
Coalescence of Liquid Drops : Capillarity-Driven Hydrodynamics(Trend)

Okumura Ko

69(10) 678-679, Oct 5, 2014
9aAY-3 Meandering air flow in a granular bed

Yoshimura Yuki, Yagisawa Yui, Okumura Ko

Meeting abstracts of the Physical Society of Japan, 69(2) 159-159, Aug 22, 2014
9aAY-2 Granular dynamics in quasi-two-dimensional hopper

Yagisawa Yui, Okumura Ko

Meeting abstracts of the Physical Society of Japan, 69(2) 159-159, Aug 22, 2014
10aAM-10 Fracture of parafilm III

Kosaka Ayuri, Okumura Ko

Meeting abstracts of the Physical Society of Japan, 69(2) 225-225, Aug 22, 2014
10aAM-9 Liquid drops falling in a Hele-Shaw cell

Yahashi Misato, Kimoto Natsuki, Okumura Ko

Meeting abstracts of the Physical Society of Japan, 69(2) 225-225, Aug 22, 2014
10aAM-8 Bursting of a bubble confined in between two plates II

Murano Mayuko, Kimoto Natsuki, Okumura Ko

Meeting abstracts of the Physical Society of Japan, 69(2) 225-225, Aug 22, 2014
7aAM-9 Physics of walking and running

Murano Mayuko, Okumura Ko

Meeting abstracts of the Physical Society of Japan, 69(2) 189-189, Aug 22, 2014

Books and Other Publications

印象派物理学入門 : 日常にひそむ美しい法則

奥村, 剛

日本評論社, 2020 (ISBN: 9784535788640)
ムースの物理学 : 構造とダイナミクス

Cantat, Isabelle, Cohen-Addad, Sylvie, Elias, F., Graner, F., Höhler, R., Pitois, O., Rouyer, F., Saint-Jalmes, A., 梶谷, 忠志, 武居, 淳, 竹内, 一将, 山口, 哲生, 奥村, 剛

吉岡書店, Nov, 2016 (ISBN: 9784842703688)
表面張力の物理学 : しずく、あわ、みずたま、さざなみの世界

Gennes, Pierre-Gilles de, Brochard-Wyart, Françoise, Quéré, David, 奥村, 剛

吉岡書店, 2008 (ISBN: 9784842703459)
表面張力の物理学 : しずく,あわ,みずたま,さざなみの世界

Gennes, Pierre-Gilles de, Brochard‐Wyart, Françoise, Quéré, David, 奥村, 剛

吉岡書店, 2003 (ISBN: 4842703113)
デュラン粉粒体の物理学

吉岡書店, 2002
粉粒体の物理学 : 砂と粉と粒子の世界への誘い

Duran, Jacques, 中西, 秀, 奥村, 剛

吉岡書店, 2002 (ISBN: 4842703008)

Professional Memberships

Works

Research Projects

Hydrodynamic topology transitions: dimensionality and symmetry

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, Apr, 2019 - Mar, 2024
Development of studies on wetting phenomena with the spirit of impressionism

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (A), Grant-in-Aid for Scientific Research (A), Japan Society for the Promotion of Science, Apr, 2012 - Mar, 2017

Okumura Ko, ERI Ayako, YOKOTA Maria, OBARA Noriko, TAKEHARA Yuka, TANI Marie, SEKIGUCHI Teruyo, KIMOTO Natsuki, KASHIMA Yuki, TANAKA Nana, YAMAGISHI Yuki, MURANO Mayuko, YAGISAWA Yui, YOSHIMURA Yuki, YAHASHI Misato, ISOBE Midori, OGAWA Mima, THEN Hui Zee, NAKAZATO Hana
印象派物理学の精神に基づいた融合マテリアルの研究の展開

科学研究費助成事業新学術領域研究(研究領域提案型), 新学術領域研究(研究領域提案型), 日本学術振興会, Apr, 2013 - Mar, 2015

奥村剛
印象派物理学による天然複合材料の研究：マテリアル開発における指導原理の構築

科学研究費助成事業新学術領域研究(研究領域提案型), 新学術領域研究(研究領域提案型), 日本学術振興会, Apr, 2011 - Mar, 2013

奥村剛
Studies on wetting and fracture based on the spirit of impressionistic physics

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2008 - 2011

OKUMURA Ko
Phase Transition Dynamics of Soft matter Induced by Guest Components

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research on Priority Areas, Grant-in-Aid for Scientific Research on Priority Areas, Japan Society for the Promotion of Science, 2006 - 2010

IMAI Masayuki, TANAKA Hajime, OKUMURA Ko
複合材料のソフトマター物理学

科学研究費助成事業若手研究(B), 若手研究(B), 日本学術振興会, 2004 - 2006

奥村剛
Development of computer programs for two dimensional Raman and Infrared vibrational spectroscopy

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (B), Grant-in-Aid for Scientific Research (B), Japan Society for the Promotion of Science, 2000 - 2002

TANIMURA Yoshitaka, SUZUKI Yoko, OKUMURA Ko
溶液相分子の非共鳴5次光学応答の液体論による解析

科学研究費助成事業奨励研究(A), 奨励研究(A), 日本学術振興会, 1998 - 1999

奥村剛
Higher order off-resonat optical processes for homogeneous and inhomogeneous broadening of liquids

Grants-in-Aid for Scientific Research Grant-in-Aid for Scientific Research (C), Grant-in-Aid for Scientific Research (C), Japan Society for the Promotion of Science, 1996 - 1997

TANIMURA Yoshitaka, OKUMURA Ko

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