ADVERTISEMENT RETURN TO ISSUEPREVNoteNEXTAdsorption of Disk-Shaped Janus Beads at Liquid−Liquid InterfacesYoshimune Nonomura, Shigeyuki Komura, and Kaoru TsujiiView Author Information Tokyo Research Laboratories, Kao Corporation, 2-1-3 Bunka, Sumida-ku, 131-8501, Japan, Department Chemistry, Faculty Science, Metropolitan University, 1-1 Minami-Osawa, Hachioji-shi, 192-0397, Nanotechnology Center, Institute for Electronic Hokkaido N21, W10 Kita-ku, Sapporo 001-0021, Japan Cite this: Langmuir...

The phase separation in lipid bilayers that include negatively charged lipids is examined experimentally. We observed phase-separated structures and determined the membrane miscibility temperatures several binary ternary mixtures of unsaturated neutral lipid, dioleoylphosphatidylcholine (DOPC), saturated dipalmitoylphosphatidylcholine (DPPC), dioleoylphosphatidylglycerol (DOPG$^{\scriptsize{(-)}}$), dipalmitoylphosphatidylglycerol (DPPG$^{\scriptsize{(-)}}$), cholesterol. In lipids,...

The decomposition of Al--6.8 at. % Zn and Al--10 binary alloys ternary with the further addition 0.1 Mg, quenched into miscibility gap aged at different temperatures (18, 40, 80 \ifmmode^\circ\else\textdegree\fi{}C), has been studied by small-angle neutron scattering. scattering cross section d\ensuremath{\Sigma}(k,t)/d\ensuremath{\Omega} as a function vector k aging times t analyzed in terms time-evolution theory structure S(k,t), proposed Furukawa, taking account scaling properties...

We discuss the linear hydrodynamic response of a two-dimensional active chiral compressible fluid with odd viscosity. The viscosity coefficient represents broken time-reversal and parity symmetries in 2D characterizes deviation system from passive fluid. Taking into account coupling to underlying bulk fluid, we obtain viscosity-dependent mobility tensor, which is responsible for non-reciprocal point force. Furthermore, consider finite-size disk moving laterally demonstrate that experiences...

Dynamics of microphase separation an oil-water-surfactant system is investigated by means cell dynamical approach on the basis proposed two-order-parameter time dependent Ginzburg-Landau model. For equal volumes oil and water, evolution characteristic length scale domains changing average surfactant concentration. The more amount surfactant, slower dynamics. results are analyzed using crossover scaling assumption.

In an effort to understand ``rafts'' in biological membranes, we propose phenomenological models for saturated and unsaturated lipid mixtures, lipid-cholesterol mixtures. We consider simple couplings between the local composition internal membrane structure, their influence on transitions liquid ``gel'' phases. Assuming that gel transition temperature of is shifted by presence lipid, cholesterol acts as external field chain melting transition, a variety phase diagrams are obtained. The...

The solid particles are adsorbed at interfaces and form self-assembled structures when the have suitable wettability to both liquids. Here, we show theoretically how microstructure on particle surface affects their adsorption properties. physical properties of interface adsorbing a will be described by taking into account roughness due microstructure. changes drastically equilibrium position particle. Therefore, contact angle three-phase line shifts with area, because enhances interfacial...

We discuss hydrodynamic forces acting on a two-dimensional liquid domain that moves laterally within supported fluid membrane in the presence of odd viscosity. Since active rotating proteins can accumulate inside domain, we focus difference viscosity between and outside domain. Taking into account momentum leakage from incompressible to underlying substrate, analytically obtain flow induced by lateral motion calculate drag lift moving In contrast passive case without viscosity, arises only...

We investigate the statistical properties of fluctuations in active systems that are governed by non-symmetric responses. Both an underdamped Langevin system with odd resistance tensor and overdamped elastic studied. For a thermal equilibrium, time-correlation functions should satisfy time-reversal symmetry anti-symmetric parts correlation vanish. systems, however, we find can exist they proportional to either coefficient or constant. This means invariance is broken due presence responses...

Using Onsager's variational principle, we derive dynamical equations for a nonequilibrium active system with odd elasticity. The elimination of the extra variable that is coupled to driving force leads nonreciprocal set material coordinates. obtained manifest physical origin elastic constants are proportional and friction coefficients. Our approach offers systematic consistent way matter in which time-reversal symmetry broken.

Biological nanomachines are nanometer-size macromolecular complexes that catalyze chemical reactions in the presence of substrate molecules. The catalytic functions carried out by such cytoplasm, and biological membranes essential for cellular metabolism homeostasis. During reactions, enzymes undergo conformational changes induced binding product release. In recent years, these dynamics have been considered to account nonequilibrium transport phenomena as diffusion enhancement, chemotaxis,...

Abstract Using an underdamped active Ornstein-Uhlenbeck particle, we propose two information swimmer models having either external or internal feedback control and perform their numerical simulations. Depending on the velocity that is measured after every fixed time interval (measurement time), friction coefficient modified in externally controlled model, whereas persistence for activity changed internally one. In steady state, both of these swimmers acquire finite average velocities noisy...

The time evolution of the structure function $S(k,t)$ quenched Al-Zn binary alloys and Al-Zn-Mg pseudobinary heated to 80 40\ifmmode^\circ\else\textdegree\fi{}C (or 18\ifmmode^\circ\else\textdegree\fi{}C) has been measured by small-angle neutron scattering. obeys a scaling relation $S(k,t)=\ensuremath{\alpha}{k}_{m}{(t)}^{\ensuremath{-}3}\stackrel{\ifmmode \tilde{}\else \~{}\fi{}}{S}(\frac{k}{{k}_{m}(t)})$, in terms universal $\stackrel{\ifmmode...

We investigate the adsorption of a spherical Janus particle to spherically curved liquid-liquid interface. show that equilibrium contact angle is determined by geometry particle, its wettability, and also interfacial curvature. In contrast with homogeneous there preferred curvature (spontaneous curvature) due when satisfies certain conditions.

We consider the formation of finite-size domains in lipid bilayers consisting saturated and hybrid lipids. First, we describe a monolayer model that includes coupling between compositional scalar field two-dimensional vectorial order-parameter. Such yields an effective microemulsion free-energy for monolayer, its characteristic length modulations can be considered as origin biological membranes. Next, coupled bilayer composed two modulated monolayers, discuss static dynamic properties...

We perform numerical simulations of a model micromachine driven by catalytic chemical reactions. Our includes mechano-chemical coupling between the structural variables and nonequilibrium variable describing The time-correlation functions are calculated further analyzed in terms odd Langevin dynamics. obtain effective elastic constant that manifests broken time-reversal symmetry micromachine. Within simulation, we separately estimate quantity called nonreciprocality show its behavior is...

Multi-walled hollow nanoparticles made from tungsten disulphide (WS$_2$) show exceptional tribological performance as additives to liquid lubricants due effective transfer of low shear strength material onto the sliding surfaces. Using a scaling approach based on continuum elasticity theory for shells and pairwise summation van der Waals interactions, we that interactions cause strong adhesion substrate which favors release delaminated layers For large thin nanoparticles, can considerable...

As a simple model for Pickering emulsion droplet, we consider the adsorption of spherical particles to liquid-liquid interface in order investigate curvature effect on particle adsorption. By taking into account both surface and volume energies due presence particle, show that equilibrium contact angle is determined by classical Young's equation although energy depends curvature. We also calculate partitioning colloidal among two liquids interface. The distribution expressed terms...