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16 papers · 1 filter
Persistent Homology and Many-Body Atomic Structure for Medium-Range Order in the Glass
Takenobu Nakamura, Yasuaki Hiraoka, Akihiko Hirata +2
Characterization of medium-range order in amorphous materials and its relation to short-range order is discussed. A new topological approach is presented here to extract a hierarch…
Hydrodynamic Interactions of Self-Propelled Swimmers
John J. Molina, Yasuya Nakayama, Ryoichi Yamamoto
The hydrodynamic interactions of a suspension of self-propelled particles are studied using a direct numerical simulation method which simultaneously solves for the host fluid and…
Memory function of turbulent fluctuations in soft-mode turbulence
Takayuki Narumi, Junichi Yoshitani, Masaru Suzuki +4
Modal relaxation dynamics has been observed experimentally to clarify statistical-physical properties of soft-mode turbulence, the spatiotemporal chaos observed in homeotropically…
Easier sieving through narrower pores: fluctuations and barrier crossing in flow-driven polymer translocation
Rodrigo Ledesma-Aguilar, Takahiro Sakaue, Julia M. Yeomans
We show that the injection of polymer chains into nanochannels becomes easier as the channel becomes narrower. This counter intuitive result arises because of a decrease in the dif…
Maxwell stress in fluid mixtures
Takahiro Sakaue, Takao Ohta
We examine the structure of Maxwell stress in binary fluid mixtures under an external electric field and discuss its consequence. In particular, we show that, in immiscible blends,…
Glassy dynamics in relaxation of soft-mode turbulence
Fahrudin Nugroho, Takayuki Narumi, Yoshiki Hidaka +3
The autocorrelation function of pattern fluctuation is used to study soft-mode turbulence (SMT), a spatiotemporal chaos observed in homeotropic nematics. We show that relaxation ne…