Official web site of Takeuchi Lab, Univ. Tokyo

The Experimental Statistical Physics Lab

Among matter and phenomena we see, physical principles underlying those at thermal equilibrium or close to it are deeply understood, thanks to the celebrated thermodynamics and statistical physics. However, when we turn our eyes to natural phenomena around us, we realize that many of them are actually out of equilibrium. To give examples, water and air produce large-scale convection over the globe. Our sky and landscape are showing beautiful patterns to us. How about life? In our body, diverse biomolecules cooperate to realize a variety of cell functions, cells interplay to maintain cell tissues, and combination of those constitutes a living organism. Further, individuals form communities, and network of various species and environments constitute ecosystems. All such observations are intriguing examples in nature, where a collection of numerous interacting elements makes nontrivial features emerge at macroscopic scales. Despite the ubiquity of such fascinating examples, attempts to build frameworks of thermodynamics and statistical physics for non-equilibrium phenomena are presumably still in their infancy, remaining to be one of the most important open problems in modern sciences.

In Takeuchi Lab, we aim to explore statistical physics of out-of-equilibrium phenomena experimentally. Using soft and living matter, such as liquid crystal, colloids, and granular materials, as well as bacteria, we carry out experiments that we design to capture underlying physical principles, in addition to the understanding of specific phenomena we observe. As a result, we deal with diverse subjects in the group, sometimes enjoying interesting connections in between. We are also positive in starting new projects. Through such efforts, we aim to make unique contributions, under the banner of the experimental statistical physics.

Please see the research page for more details.

Takeuchi Lab News

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About our logo

The inner part of the logo represents the Schlieren pattern of topological defects of liquid crystal (real image), whereas the outer edge shows KPZ-class interface fluctuations, which we discovered in the topological-defect turbulence of liquid crystal (learn more). By depicting smooth Schlieren patterns of individual defects and a fluctuating KPZ interface made of a collection of defects in the single figure, the logo represents our scientific interests in linking microscopic and macroscopic phenomena, as well as deterministic and stochastic problems. Moreover, the intertwined red and blue curves are symbols of our approach incorporating both experimental and theoretical studies.

Download: full version, logo only (use them freely to link our web site, etc.)