Frictional and nanomechanical properties of nanostructured polymer surfaces are important to their technological biomedical applications. In this work, poly(ethylene terephthalate) (PET) with a periodic distribution well-defined nanopillars were fabricated through an anodization/embossing process. The apparent surface energy the nanopillared was evaluated using Fowkes acid-base approach, morpho...

We have used an in vitro model system of glass-supported planar membranes to study the effects of lateral mobility of membrane-bound receptors on cell adhesion. Egg phosphatidylcholine (PC) bilayers were reconstituted with two anchorage isoforms of the adhesion molecule lymphocyte function-associated antigen 3 (LFA-3). The diffusion coefficient of glycosyl phosphatidylinositol (GPI)-anchored LF...

Human-machine interfaces (HMIs) are essential for effective communication between machines and tissues. However, mechanical biological mismatches, along with weak adhesion rigid electronic devices soft tissue, often cause unreliable responses affect the signal recording of HMIs. In this study, an asymmetrical “Janus” biogel patch one side firmly adhering to tissues, other surface having little ...

The water-physical and strength properties of the soil from site a landslide were determined in laboratory conditions. According to results shear tests, dependences indices (adhesion, angle internal friction) loam samples on humidity constructed. magnitude mass is determined. By constructing various possible sliding surfaces, most dangerous surface was stability coefficient for each them. relia...

Advancement in vacuum technologies and vapor deposition processes during last decades has led to the introduction of many modern coatings on metal cutting tools. Even in such an advanced vacuum coating techniques, the failure is not due to the wear of the coating but rather due to the lack of coating adhesion to the substrate. In this work, the coating adhesion test results were performed which...

platelet activation and adhesion to the site of vascular injury is a dynamic process comprising reversible and irreversible phases. platelet adhesion typically occurs in a multi-step process similar to the selectin/integrin-mediated adhesion of neutrophils. this phenomenon is highly regulated and influenced by the cross-talk between platelets and injured endothelium. this cross-talk involves a ...

This paper explores the research gap involving links between railhead temperature, relative humidity, and coefficient of friction (adhesion level) at wheel/rail interface as found on track across UK. Existing work done in this field has mostly been carried out laboratories which limits variation environmental conditions. Weather data were collected from different sites England, generating a rea...

conclusions the impact of sugars and other factors on biofilm formation can vary depending on the type of bacteria present. results results showed that the presence of sugars has no effect on the bacterial growth rate; all three concentrations of sugars were hydrophilic and demonstrated a high affinity toward binding to the surfaces. background bacteria utilize various methods in order to live ...

We develop a discrete model of malignant invasion using a thermodynamic argument. An extension of the Potts model is used to simulate a population of malignant cells experiencing interactions due to both homotypic and heterotypic adhesion while also secreting proteolytic enzymes and experiencing a haptotactic gradient. In this way we investigate the influence of changes in cell-cell adhesion on...