Chair Professor

- Office:
- 351
- Email:
- sano.masaki@sjtu.edu.cn
- Homepage:
- http://daisy.phys.s.u-tokyo.ac.jp/sano/sano_e.htm

Masaki Sano received his B.A, M.A., and PhD degree in engineering from Tohoku University in Japan. He was appointed as an assistant professor and an associate professor in 1981 and1990, respectively in Tohoku University. From 1987 to 1989, he visited James Franck and Enrico Fermi Institute at University of Chicago as a visiting scientist. From 2000 to 2019 March, he has been a professor at the Department of Physics of the University of Tokyo. He joined the faculty of Shanghai Jiao Tong University in 2019 May.

Nonlinear Dynamics, Statistical Physics of Non-equilibrium Systems, Turbulence, Biological Physics, Physics of Active Matter, Physics of Living Matter

The second law of thermodynamics dictates that the entropy of an isolated system cannot decrease. Contrary to this principle, we observe a vast variety of self-organized structures ranging from the cosmic scale of the universe to the micro scale of living cells. In many cases, those systems are not isolated but exposed to endless flows of energy and masses which define non-equilibrium states. In non-equilibrium states, many new states emerge such as self-organizing patterns, limit cycle oscillation, chaos, and turbulence. How the ordered states and the disordered states arise out of fluctuations in non-equilibrium systems? What is the law governing such states and transitions among them? How just a collection of mere matter can exert basic functions of life? We study non-equilibrium dynamics of soft matter (liquid crystals, colloids, fluids, collection of biological cells), and roles of information flow in these systems by both experimental and theoretical approaches to search for general laws governing non-equilibrium systems. This approach will bring us to physical understanding of biological phenomena.

- T. Yamamoto and M. Sano, “Hydrodynamic rotlet dipole driven by spinning chiral liquid crystal droplets”, Phys. Rev. E, 99, 022704 (2019).
- D. Nishiguchi, J. Iwasawa, H.-R. Jiang, and M. Sano, “Flagellar Dynamics of Chains of Active Janus Particles Fueled by an AC Electric Field”, New J. Phys. 20, 015002 (2018).
- T. Yamamoto and M. Sano,” Chirality-Induced Helical Self-Propulsion of Cholesteric Liquid Crystal Droplets”, Soft Matter 13, 3328-3333 (2017).
- K. Kawaguchi, R. Kageyama, and M. Sano, “Topological Defects Control Collective Dynamics in Neural Progenitor Cell Cultures”, Nature 545, 327 (2017).
- T. Mano, J.-B. Delfau, J. Iwasawa, and M. Sano, “Optimal Run-and-Tumble Based Transportation of a Janus Particle with Active Steering”, Proc. Nat. Acad. Sci. US. 114 E2580-E2589 (2017).
- D. Nishiguchi, K.H. Nagai, H. Chate, and M. Sano, “Long-Range Nematic Order and Anomalous Fluctuations in Suspensions of Swimming Filamentous Bacteria”, Phys. Rev. E 95, 020601 (2017).
- M. Sano and K. Tamai, “A Universal Transition to Turbulence in Channel Flow”, Nature Physics 12, 249 (2016).
- T. Ohta, M. Tarama, and M. Sano, “Simple Model of Cell Crawling”, Physica D 318 3-11 (2016).
- H. Tanimoto and M. Sano, “A Simple Force-Motion Relation for Migrating Cells Revealed by Multipole Analysis of Traction Stress”, Biophys. J. 106, 16-25 (2014).
- K.A. Takeuchi and M. Sano, “Universal Fluctuations of Growing Interfaces: Evidence in Turbulent Liquid Crystals”, Phys. Rev. Lett. 104, 230601 (2010).
- T. Hiraiwa, M. Y. Matsuo, T. Ohkuma, T. Ohta, and M. Sano, “Dynamics of a Deformable Self-Propelled Domain”, EPL 91, 20001 (2010).
- S. Toyabe, T. Sagawa, M. Ueda, E. Muneyuki, and M. Sano, “Experimental Demonstration of Information-to-Energy Conversion and Validation of the Generalized Jarzynski Equality”, Nature Physics 6, 988 - 992 (2010).
- H.-R. Jiang, N. Yoshinaga, and M. Sano, “Active Motion of Janus Particle by Self-thermophoresis in a Defocused Laser Beam”, Phys. Rev. Lett. 105, 268302 (2010).
- H.-R. Jiang, H. Wada, N. Yoshinaga, and M. Sano, “Manipulation of Colloids by Nonequilibrium Depletion Force in a Temperature Gradient”, Phys. Rev. Lett. 102, 208301 (2009).
- K.A. Takeuchi, M. Kuroda, H. Chate, and M. Sano, “Experimental Realization of Directed Percolation Criticality in Turbulent Liquid Crystals”, Phys. Rev. E 80, 051116 (2009).
- Y.T. Maeda, J. Inose, M. Y. Matsuo, S. Iwaya, and M. Sano, “Ordered Patterns of Cell Shape and Orientational Correlation during Spontaneous Cell Migratio”n, PLoS ONE 3 (11), e3734 (2008).
- K.A. Takeuchi, M. Kuroda, H. Chate, and M. Sano, “Directed Percolation Criticality in Turbulent Liquid Crystals”, Phys. Rev. Lett. 99, 234503 (2007).
- Y. Murayama, Y. Sakamaki, and M. Sano, “Elastic Response of Single DNA Molecules Exhibits a Reentrant Collapsing Transition”, Phys. Rev. Lett. 90, 018102 (2003).
- J. A. Glazier, T. Segawa, A. Naert, and M. Sano, “Evidence Against Ultrahard Thermal Turbulence at Very High Rayleigh Numbers”, Nature 398, 307-310 (1999).
- A. Yuse and M. Sano, “Transition between Crack Patterns in Quenched Glass Plates”, Nature 362, 329-331 (1993).
- M. Sano, X.Z. Wu, and A. Libchaber, “Turbulence in Helium Gas Free Convection”, Phys. Rev. A 40, 6421-6430 (1989).
- M. Sano and Y. Sawada, “Measurement of Lyapunov Spectrum from a Chaotic Time Series”, Phys. Rev. Lett. 55, 1082-1085 (1985).