252 citations · 2.2k across the 98 of their papers we have counts for
9 papers · 1 filter
Star shaped patterns caused by colloidal aggregation during the spreading process of a droplet
Michiko Shimokawa, Hiroyuki Kitahata, Hidetsugu Sakaguchi
This research found that when an acidic solution with a low surface tension spread on the surface of a glycerol solution mixed with milk, a star shaped pattern was spontaneously fo…
Simple Model of Splitting Instability in Swollen Membranes
Hidetsugu Sakaguchi, Satomi Maeyama
A simple one-dimensional mechanical model is proposed for splitting instability in swollen membranes. The splitting instability occurs by ring constriction. The bifurcation can be…
Pattern formation in a model of photochemical reaction
Hidetsugu Sakaguchi, Daishiro Kijima, Shunsuke Chatani +1
Stripe and columnar patterns were experimentally found in photopolymer films during irradiation of collimated UV light. We propose a mathematical model of photopolymerization, perf…
A coupled map lattice model for spontaneous pore formation in anodic oxidation
Hidetsugu Sakaguchi, Jie Zhao
We construct a coupled map lattice model for the spontaneous pore formation in anodic oxidation in two dimensions and perform numerical simulations, after we explain steady flat so…
Kinetic Friction by a Small Number of Intervening Inelastic Particles between Rough Surfaces
Hidetsugu Sakaguchi
We investigate a mechanism of the appearance of kinetic friction in granular materials. We consider a small number of intervening inelastic particles between two rough surfaces as…
Splitting instability of cellular structures in the Ginzburg-Landau model under the feedback control
Hidetsugu Sakaguchi
We study numerically a Ginzburg-Landau type equation for micelles in two dimensions. The domain size and the interface length of a cellular structure are controlled by two feedback…
Scaling Relations of Viscous Fingers in Anisotropic Hele-Shaw Cells
Hidetsugu Sakaguchi, Kazutaka Noto
Viscous fingers in a channel with surface tension anisotropy are numerically studied. Scaling relations between the tip velocity v, the tip radius and the pressure gradient are inv…
Gap solitons in quasiperiodic optical lattices
Hidetsugu Sakaguchi, Boris A. Malomed
Families of solitons in one- and two-dimensional (1D and 2D) Gross-Pitaevskii equations with the repulsive nonlinearity and a potential of the quasicrystallic type are constructed…
Two-dimensional loosely and tightly bound solitons in optical lattices and inverted traps
H. Sakaguchi, B. A. Malomed
We study the dynamics of nonlinear localized excitations (solitons) in two-dimensional (2D) Bose-Einstein condensates (BECs) with repulsive interactions, loaded into an optical lat…