Hiroaki Ishikawa, Yuki Koyano, Hiroaki Ito, Yutaka Sumino, Hiroyuki Kitahata
"Simple Mathematical Model for a Pairing-Induced Motion of Active and Passive Particles"
Journal of the Physical Society of Japan, 94, 044006 (2025). [arXiv]

Kota Ikeda, Hiroyuki Kitahata, Yuki Koyano
"Existence and stability of a quasi-periodic two-dimensional motion of a self-propelled particle"
Japan Journal of Industrial and Applied Mathematics, 41, 1413-1449 (2024).

Arnab Maiti, Yuki Koyano, Hiroyuki Kitahata, Krishna Kanti Dey
"Activity-induced diffusion recovery in crowded colloidal suspensions"
Physical Review E, 109, 054607 (2024). [arXiv]

Tomasz Roliński, Hiroyuki Kitahata, Yuki Koyano, Jerzy Górecki
"Quantitative analysis of the complex time evolution of a camphor boat"
Applied Sciences, 14, 959 (2024).

Hiroyuki Kitahata and Yuki Koyano
"Mathematical modeling for the synchronization of two interacting active rotors"
Physical Review E, 107, 064607 (2023). [arXiv]

Richard J.G. Löffler, Tomasz Rolinski, Hiroyuki Kitahata, Yuki Koyano, and Jerzy Gorecki
"New types of complex motion of a simple camphor boat"
Physical Chemistry Chemical Physics, 25, 7794-7804 (2023).

Hiroyuki Kitahata, Yuki Koyano, Richard J.G. Löffler, and Jerzy Gorecki
"Complexity and bifurcations in the motion of a self-propelled rectangle confined in a circular water chamber"
Physical Chemistry Chemical Physics, 24, 20326-20335 (2022).

Hiroaki Ishikawa, Yuki Koyano, Hiroyuki Kitahata, and Yutaka Sumino
"Pairing-induced motion of source and inert particles driven by surface tension"
Physical Review E, 106, 024604 (2022). [arXiv]

Yuki Koyano and Hiroyuki Kitahata
"Anomalous diffusion and transport by a reciprocal convective flow"
Physical Review E, 106, 024102 (2022). [arXiv]

Hiroyuki Kitahata and Yuki Koyano
"Self-propelled motion of the camphor float with n-fold rotational symmetry"
Frontiers in Physics, 10, 858791 (2022).

Katsutomo Era, Yuki Koyano, Yuto Hosaka, Kento Yasuda, Hiroyuki Kitahata, and Shigeyuki Komura
"Autonomous elastic microswimmer"
EPL, 133, 34001 (2021). [arXiv]

Yuki Koyano and Hiroyuki Kitahata
"Imperfect bifurcation in the rotation of a propeller-shaped camphor rotor"
Physical Review E, 103, 012202 (2021). [arXiv]

Yuki Koyano, Hiroyuki Kitahata, Koji Hasegawa, Satoshi Matsumoto, Katsuhiro Nishinari, Tadashi Watanabe, Akiko Kaneko, and Yutaka Abe
"Diffusion enhancement in a levitated droplet via oscillatory deformation"
Physical Review E, 102, 033109 (2020). [arXiv]

Hiroyuki Kitahata and Yuki Koyano
"Spontaneous Motion of a Camphor Particle with a Triangular Modification from a Circle"
Journal of Physical Society of Japan, 89, 094001 (2020). [arXiv]

Yuhei Hirose, Yusuke Yasugahira, Mamoru Okamoto, Yuki Koyano, Hiroyuki Kitahata, Masaharu Nagayama, and Yutaka Sumino
"Two floating camphor particles interacting through lateral capillary force"
Journal of Physical Society of Japan, 89, 074004 (2020). [arXiv]

Yuki Koyano, Hiroyuki Kitahata, Satoshi Nakata, and Jerzy Gorecki,
"On a simple model that explains inversion of a self-propelled rotor under periodic stop and release operations"
Chaos, 30, 023105 (2020). [arXiv]

Yuki Koyano, Hiroyuki Kitahata, and Alexander S. Mikhailov,
"Diffusion in crowded colloids of particles cyclically changing their shapes"
EPL, 128, 40003 (2019). [arXiv]

Yui Kasuo, Hiroyuki Kitahata, Yuki Koyano, Masahiro Takinoue, Kouichi Asakura, and Taisuke Banno,
"Start of Micrometer-Sized Oil Droplet Motion through Generation of Surfactants"
Langmuir, 35, 13351-13355 (2019).

Yuki Koyano, Nobuhiko J. Suematsu, and Hiroyuki Kitahata,
"Rotational motion of a camphor disk in a circular region"
Physical Review E, 99, 022211 (2019). [arXiv]

Yuki Koyano, Hiroyuki Kitahata, Marian Gryciuk, Nadejda Akulich, Agnieszka Gorecka, Maciej Malecki, and Jerzy Gorecki,
"Bifurcation in the angular velocity of a circular disk propelled by symmetrically distributed camphor pills"
Chaos, 29, 013125 (2019). [arXiv]

Jerzy Gorecki, Hiroyuki Kitahata, Yuki Koyano, M. Gryciuk, M. Marecki, Nobuhiko J. Suematsu,
"XOR gate for information coded with camphor particles moving on the water surface"
Int. J. Unconventional Comput., 13, 417-434 (2018).

Ben Nanzai, Daisuke Terashita, Yuki Koyano, Hiroyuki Kitahata, and Manabu Igawa,
"Spontaneous electrical oscillation in horizontal three-phase liquid membrane systems: Effect of Marangoni effect induced by buoyant convection"
Colloids Surf. A, 553, 496 (2018).

Shin-Ichiro Ei, Hiroyuki Kitahata, Yuki Koyano, and Masaharu Nagayama,
"Interaction of non-radially symmetric camphor particles"
Physica D, 366, 10 (2018).

Alexander S. Mikhailov, Yuki Koyano, and Hiroyuki Kitahata,
"Hydrodynamic effects in oscillatory active nematics"
Journal of Physical Society of Japan, 86, 101013 (2017).

Yuki Koyano, Marian Gryciuk, Paulina Skrobanska, Maciej Malecki, Yutaka Sumino, Hiroyuki Kitahata, and Jerzy Gorecki,
"Relationship between the size of a camphor-driven rotor and its angular velocity"
Physical Review E, 96, 012609 (2017). [arXiv]

Jerzy Gorecki, Hiroyuki Kitahata, Nobuhiko J. Suematsu, Yuki Koyano, Paulina Skrobanska, Marian Gryciuk, Maciej Malecki, Takahiro Tanabe, Hiroya Yamamoto, and Satoshi Nakata,
"Unidirectional motion of a camphor disk on water forced by interactions between surface camphor concentration and dynamically changing boundaries"
Physical Chemistry Chemical Physics, 19, 18767 (2017).

Yuki Koyano, Tatsunari Sakurai, and Hiroyuki Kitahata,
"Oscillatory Motion of a Camphor Grain in a One-Dimensional Finite Region"
Physical Review E, 94, 042215 (2016). [arXiv]

Yuki Koyano, Hiroyuki Kitahata, and Alexander S. Mikhailov,
"Hydrodynamic collective effects of active proteins in biological membranes"
Physical Review E, 94, 022416 (2016). [arXiv]

Taisuke Banno, Arisa Asami, Naoko Ueno, Hiroyuki Kitahata, Yuki Koyano, Kouichi Asakura, and Taro Toyota,
"Deformable Self-Propelled Micro-Object Comprising Underwater Oil Droplets",
Scientific Reports, 6, 31292 (2016).

Satoshi Nakata, Hiroya Yamamoto, Yuki Koyano, Osamu Yamanaka, Yutaka Sumino, Nobuhiko J. Suematsu, Hiroyuki Kitahata, Paulina Skrobanska, and Jerzy Gorecki,
"Selection of Rotation Direction for a Camphor Disk Resulting From a Chiral Asymmetry of a Water Chamber",
Journal of Physical Chemistry B, 120, 9166 (2016).

Hiroyuki Kitahata, Rui Tanaka, Yuki Koyano, Satoshi Matsumoto, Katsuhiro Nishinari, Tadashi Watanabe, Koji Hasegawa, Tetsuya Kanagawa, Akiko Kaneko, and Yutaka Abe,
"Oscillation of a rotating levitated droplet: Analysis with a mechanical model",
Physical Review E, 92, 062904 (2015). [arXiv]

Yuki Koyano, Natsuhiko Yoshinaga, and Hiroyuki Kitahata,
"General Criteria for Determining Rotation or Oscillation in a Two-dimensional Axisymmetric System",
The Journal of Chemical Physics, 143, 014117 (2015). [arXiv]

(Written in Japanese) Yuki Koyano,
"Self-propelled motion of a camphor particle confined in a finite region",
Proceedings of the 24th Symposium on Traffic Flow and Self-driven Particle, 24, 29-32 (2018).

Chapter 10 "Chemo-mechanical Effects for Information Processing with Camphor Particles Moving on a Water Surface" in "Self-organized Motion: Physicochemical Design based on Nonlinear Dynamics" edited by S. Nakata, V. Pimienta, I. Lagzi, H. Kitahata, N. J. Suematsu
J. Gorecki, H. Kitahata, Y. Koyano, P. Skrobanska, M. Gryciuk and M. Malecki
RSC Publishing, Cambridge, 2018

Chapter 2 "Mathematical Model and Analyses on Spontaneous Motion of Camphor Particle" in "Self-organized Motion: Physicochemical Design based on Nonlinear Dynamics" edited by S. Nakata, V. Pimienta, I. Lagzi, H. Kitahata, N. J. Suematsu
H. Kitahata, Y. Koyano, K. Iida and M. Nagayama
RSC Publishing, Cambridge, 2018

2025.2.21 Adaptive behavior and its ecological foundations 2025 @Hyakunen-Kinenkan, Kobe Univ.
"Emergence of Goal-directed Behavior in Self-propelled System"
Yuki Koyano

(Invited) 2024.11.18 14th International Gel Symposium @Bankoku-Shinryo-kan, Okinawa
"Precise investigation of shape-dependent motion and their interaction in rotating self-propelled particles"
Yuki Koyano

(Invited) 2024.10.16 Theoretical and Experimental Approaches to Goal-Directed Behavior @Basque Center of Applied Mathematics
"Self-propelled motion of camphor on a water surface interacting with system boundaries"
Yuki Koyano

2024.9.27 Soft Matter Day #2 @Warsaw University
"Spontaneous motion in camphor-water system"
Yuki Koyano

2023.9.13 Advanced core-to-core network for the physics of self-organizing active matter @Rohm Theatre Kyoto
"Synchronization of two interacting active rotors"
Yuki Koyano

2023.8.11 STATPHYS28 @University of Tokyo
"Anomalous diffusion under a reciprocal convective flow"
Yuki Koyano and Hiroyuki Kitahata

2022.11.15 Poland-Japan symposium on spatio-temporal self-organization 2022 (Online)
"Anomalous diffusion and transport by a reciprocal convective flow"
Yuki Koyano

(Invited) 2022.10.27 The 5th Symposium on International Joint Graduate Program in Material Science (at Tohoku University & Online)
"Imperfect bifurcation in the rotation of a propeller-shaped camphor rotor"
Yuki Koyano and Hiroyuki Kitahata

2021.10.7 Poland-Japan symposium on spatio-temporal self-organization 2021 (Online)
"Bifurcation structure in a self-rotating camphor particle system"
Yuki Koyano

(Invited) 2021.7.16 RIMS Workshop "Mathematical Mechanobiology" (Online)
"Imperfect bifurcation in the rotation of a propeller-shaped camphor rotor"
Yuki Koyano

(Invited) 2020.3.23-25 Jammed matter and its non-Gaussian fluctuations @Tohoku university (The conference was cancelled due to the outbreak of COVID19)
"Diffusion enhancement in a levitated droplet via oscillatory deformation"
Yuki Koyano

(Invited) 2020.1.7 Workshop on Physics of Soft, Active and Living Matter @Chiba university
"Diffusion in crowded colloids of particles cyclically changing their shapes"
Yuki Koyano, Hiroyuki Kitahata, and A. S. Mikhailov

2019.11.19−21 Joint UBI-NanoLSI workshop "Trends in Molecular Biophysics of Living Cells" @Kanazawa University
"Diffusion in crowded active colloids: A model for bacterial cytoplasm"
Yuki Koyano, Hiroyuki Kitahata, and A. S. Mikhailov

2019.2.28 International Symposium on Spatio-temporal Patterns of Elements Driven by Self-generated Flows under Geometrical Constraints @Chiba University
"Anguler velocity of a camphor rotor depending on its size"
Yuki Koyano

2018.11.3−4 Trends in Computational Molecular Biophysics @Memorial Museum of Cultural Exchange, Kanazawa
"Cooperative dynamics of active dimers"
Yuki Koyano

2018.1.19−20 Active Matter Workshop 2018 @FIFC Kyoto University, Japan
"Interaction of elliptic camphor particles"
Yuki Koyano, Shin-Ishiro Ei, Hiroyuki Kitahata, and Masaharu Nagayama

2017.3.3 Spontaneous creation of chemical computing structures based on interfacial interactions @Hiroshima University, Japan
"Hydrodynamic collective effect of active proteins"
Yuki Koyano, Hiroyuki Kitahata, and Alexander S. Mikhailov

(Invited) 2016.3.17 18th MIMS/CMMA Seminar on Self-Organization @Meiji University, Japan
"Motion of a camphor particle in a two-dimensional circular region"
Yuki Koyano and Hiroyuki Kitahata

2016.3.6-8 International Workshop New Frontiers in Nonlinear Sciences @Kanro-no-Mori, Niseko, Japan
"Motion of a camphor particle in a two-dimensional circular region"
Yuki Koyano and Hiroyuki Kitahata

2016.3.4 Mini-symposium on cooperative phenomena in nonequilibrium systems @Chiba University, Japan
"Bifurcation Analysis on Motion of a Self-Propelled Particle Confined in a Two-dimensional Circular Region"
Yuki Koyano and Hiroyuki Kitahata

2015.9.6-10 XXXV Dynamics Days EU @University of Exeter, UK
"Rotation and Oscillation of a Self-Propelled particle in a Two-Dimensional Axisymmetric System"
Yuki Koyano, Natsuhiko Yoshinaga, and Hiroyuki Kitahata

2014.9.22 3rd Japanese-German Workshop "Emerging Phenomena in Spatial Patterns" @Magdeburg, Germany
"Bifurcation Analysis on Motion of a Self-Propelled Particle Confined in a Finite Region"
Yuki Koyano and Hiroyuki Kitahata

2014.2.16-18 Achtzehntes Harzseminar "Strukturbildung in Chemie und Biophysik" @Hahnenklee, Goslar, Germany
"Bifurcation Analysis on Self-driven Particle Motion in a 1-D Finite Region"
Yuki Koyano and Hiroyuki Kitahata

2025.1.24 International Active Matter Workshop 2025 @Meiji University
"Activity-induced diffusion recovery in crowded colloidal suspensions"
Yuki Koyano, Arnab Maiti, Hiroyuki Kitahata, Krishna K. Dey

2018.11.12-15 International conference on advances in Physics of Emergent order in Fluctuations @University of Tokyo
"Hydrodynamic collective effect of active proteins"
Yuki Koyano

2018.7.9-10 Oscillations & Dynamic Instabilities in Chemical Systems (Gordon Research Conference) @Les Diablerets Conference Center
"Hydrodynamic collective effects of active proteins"
Yuki Koyano, Hiroyuki Kitahata, and Alexander S. Mikhailov

2017.11.20-23 International Symposium on Fluctuation and Structure out of Equilibrium 2017 @Sendai International Center
"Diffusion and drift in cytoplasm induced by active proteins"
Yuki Koyano, Hiroyuki Kitahata, and Alexander S. Mikhailov

2016.11.24-25 International Workshop on Hydrodynamic Flows in/of Cells @Tokyo Metroporitan University, Japan
"Hydrodynamic collective effect of active proteins depending on orientational order"
Yuki Koyano, Hiroyuki Kitahata, and Alexander S. Mikhailov

2016.11.3-6 Interdisciplinary Applications of Nonlinear Science @Kagoshima University, Japan
"Shape-dependent motion of interacting camphor particles"
Yuki Koyano, Ei Shin-Ichiro, Hiroyuki Kitahata, and Masaharu Nagayama

2016.9.27 International Workshop Symposium on Nonlinear Sciences ~The History for 30 Years and Vision for The Future~ @AIST Waterfront Anex
"General criteria for determining rotation or oscillation in a two-dimensional axisymmetric system"
Yuki Koyano, Yoshinaga Natsuhiko, and Hiroyuki Kitahata

2016.8.1-5 International Conference Patterns and Waves 2016 @Hokkaido Univ.
"Rotational and Oscillatory Motion in a Two-dimensional Axisymmetric Self-propelled System"
Yuki Koyano, Natsuhiko Yoshinaga, and Hiroyuki Kitahata

2016.7.17-22 Oscillations & Dynamic Instabilities in Chemical Systems (Gordon Research Conference) @Stoweflake Conference Center, VT, USA
"Rotational and Oscillatory Motion in a Two-dimensional Axisymmetric Self-propelled System"
Yuki Koyano, Natsuhiko Yoshinaga, and Hiroyuki Kitahata

2016.7.16-17 Oscillations & Dynamic Instabilities in Chemical Systems (Gordon Research Seminer) @Stoweflake Conference Center, VT, USA
"General criteria for determining rotation or oscillation in a two-dimensional axisymmetric system"
Yuki Koyano, Natsuhiko Yoshinaga, and Hiroyuki Kitahata

2015.8.20-23 International Sympsium on Fluctuation and Structure Out of Equlibrium 2015 @Shirankaikan, Kyoto Univ., Japan
"Rotation and Oscillation of a Self-Propelled particle in a Two-Dimensional Axisymmetric System"
Yuki Koyano, Natsuhiko Yoshinaga, and Kitahata Hiroyuki

2014.7.13-18 Oscillations & Dynamic Instabilities in Chemical Systems (Gordon Research Conference), @Girona, Spain
"Motion of a Self-driven Particle confined in a Finite Region"
Yuki Koyano, Hiroyuki Kitahata, and Tatsunari Sakurai

2014.7.12-13 Oscillations & Dynamic Instabilities in Chemical Systems (Gordon Research Seminar), @Girona, Spain
"Oscillatory Motion of a Self-driven Particle in a 1-dimensional Finite Region"
Yuki Koyano, Hiroyuki Kitahata, and Tatsunari Sakurai

2014.3.2 International Workshop on Spatiotemporal Pattern Formation in Biological and Active Matters @Ochanomizu Univ., Japan
"Oscillatory Motion of a Self-driven Particle in a 1-D Finite Region"
Yuki Koyano, Hiroyuki Kitahata, and Tatsunari Sakurai

2014.1.2-5 XXXIII Dynamics Days US @Georgia Institute of Technology, Atlanta
"Bifurcation Analysis on Self-driven Particle Motion in a 1-D Finite Region"
Yuki Koyano, Hiroyuki Kitahata, and Tatsunari Sakurai

2013.11.26-28 ICMMA 2013 (International Conference on Mathematical Modeling and Applications) @Nakano campus, Meiji Univ., Japan
"Bifurcation Analysis on Self-driven Particle Motion in a 1-D Finite Region"
Yuki Koyano, Hiroyuki Kitahata, and Tatsunari Sakurai