Under partial confinement, the motion of colloidal particles is restricted to a plane or a line but their dynamics is influenced by hydrodynamic interactions mediated by the unconfined, three-dimensional flow of the embedding fluid. We demonstrate that this dimensionality mismatch induces a characteristic divergence in the collective diffusion coefficient of the colloidal subsystem. This result...

Improvements in light microscopy, fluorescence techniques, nanoparticle synthesis and high-speed video have ushered in a flurry of experimental activity [1]. Single particle tracking has become a common tool in many scientific areas, such as colloid physics [2], the study of nanobiophysical systems, both in vivo and in vitro [7], and the microrheology of complex fluids [3–6]. In particular, the...

Active colloids are self-propelled particles moving in viscous fluids by consuming fuel from their surroundings. Here, we review the numerical and theoretical modeling of active propelled self-generated near-surface flows. We start with generic model an Brownian particle taking into account potential forces effective pairwise interaction, which include hydrodynamic phoretic interactions. Also, ...

Several autoantibodies have been described in autoimmune thyroid diseases with specificities for antigens localized to the ("microsomal") acinar cell cytoplasm, colloid space (thyroglobulin, second colloid antigen), and surface membrane (TSH-receptor and other as yet unidentified moieties) (1). If circulating antibodies play any direct role in the pathogenesis of human thyroid disease, for exam...

To assess the effects of crystalloid and colloid resuscitation on hemodynamic response and on lung water following thermal injury, 79 patients were assigned randomly to receive lactated Ringer's solution or 2.5% albumin-lactated Ringer's solution. Crystalloid-treated patients required more fluid for successful resuscitation than did those receiving colloid solutions (3.81 vs. 2.98 ml/kg body we...

BACKGROUND Fluid resuscitation in massive bleeding may cause coagulation disorders by dilution of platelets and clotting factors or by the definite influence on theirfunction. The aim of this study was to investigate the effects of balanced crystalloid and colloid solutions on platelets (PLT) in vitro using complex assessment of coagulation. METHODS The study group was comprised of 32 America...

Abstract Analytical ultracentrifugation (AUC) is a classical polymer and colloid analysis technique invented by Theodor Svedberg 100 years ago. Modern hard- software powerful computers make it now possible to develop the methodology beyond what was with this before. This perspective aims describe new possibilities, which extend possibilities of AUC repertoire determination distributions sedimen...

Rotational rheometers are extremely sensitive instruments that able to provide very accurate measurements of low values different material functions, such as viscosity and viscoelastic moduli, under certain ideal flow conditions. Nevertheless, they fail in providing reliable data for the when measured at short time scales due either instrument or fluid inertia. In 1948, Bikerman [“A penetrovisc...