Soft matter systems, typically consisting of mesoscopic particles in a microscopic solvent, can form a surprisingly rich variety of solid, ordered structures at low temperature. A reliable prediction which solid phases will appear for given particle interactions under certain thermodynamic conditions has been considered a major problem in (soft) condensed matter physics for several decades. In ...

Molecular organization of the photoreceptor disk membrane was revealed by the freeze-deep etching replica method using purified and successively rinsed bovine rod outer segment (ROS). Various membrane particles with different shape and sizes were found on cytoplasmic surface (PS face) as well as on both P and E fracture faces, which are presumed to be peripheral membrane proteins such as transd...

We theoretically show that a superposition of plane waves causes small (compared to the wavelength) particles dispersed in fluid assemble quasiperiodic two or three-dimensional patterns. experimentally demonstrate this theory by using ultrasound patterns carbon nanoparticles water an octagonal arrangement transducers, and we document good agreement between experiments. The also applies obtainin...

Unsteady drag, unsteady lift, and movement of one or two moving particles caused by the passage a planar shock wave are investigated using particle-resolved simulations viscous flows. The particle motion analysis is carried out based on for under Mach number 1.22 Reynolds 49, migration fluid forces investigated. behavior different densities configurations. time evolution drag lift changed inter...

1. A cytochrome oxidase-rich submitochondrial membrane (green membrane) was obtained from beef heart mitochondria after extraction of flavoproteins, cytochrome b, Cll C, etc. by treating with deoxycholate and potassium chloride. 2. The green membrane was formed by self assembly from the membrane fragments (flat sheets), which derived from the cristae membrane of mitochondria and had essentially...

The geometry of a river bed surface is determined by the arrangement and size of the particles that form the bed. In gravel-to-boulder bed rivers, the surface geometry around any individual particle may be complex and highly variable, and tends to include multiparticle structures. These textural and structural characteristics influence whether an individual particle is entrained. The effect on ...

This article concerns numerical simulations of the dynamics of particles immersed in a continuum solvent. As prototypical systems, we consider colloidal dispersions of spherical particles and solutions of uncharged polymers. After a brief explanation of the concept of hydrodynamic interactions, we give a general overview over the various simulation methods that have been developed to cope with ...

Particle sorting methods in microfluidic platforms are gaining momentum for various biomedical applications. Bioparticles are found in different shapes and sizes. However, conventional separation techniques are mainly designed for separation of spherical particles. Thus, there is a need to develop new methods for effective separation of spherical and non-spherical bioparticles for various appli...

The importance of particle size ratio and particle composition in the properties of a mixed bed is well known. Nevertheless, the dependence of the ed channel tortuosity T on the porosity ε in the form T= 1/εn, where n is assumed to be a constant, shows that the value of n depends on the properties f the packed bed. For loose packing, experimental data for binary mixtures of glass beads of a siz...

The myelin sheath of the goldfish lateral line nerve has been studied by means of the freeze-etch technique. Fracture faces of the myelin lamellae reveal linear structural elements which in some respects resemble those of tight junctions. In unfixed myelin rows of particles on the ef face are matched by narrow grooves on the pf face. Fixation with glutaraldehyde produces a partitioning of junct...