Bacterial infection associated with indwelling medical devices and implants is a major clinical issue, and the prevention or treatment of such infections is challenging. Antimicrobial coatings offer a significant step toward addressing this important clinical problem. Antimicrobial coatings based on tethered antimicrobial peptides (AMPs) on hydrophilic polymer brushes have been shown to be one ...

Polylactic acid (PLA) is one of the most extensively studied biodegradable materials. PLA a versatile material with excellent bio-compatibility, bioabsorbability, biodegradability, and low toxicity. As an environmentally friendly polymer, favored by researchers has explored many commercial applications, playing important role in medicine industry to replace traditional petrochemical-based polym...

abstract wind erosion of soils and suspended particles in iran is one of the serious environmental and agricultural problems which affect agricultural lands, water reservoirs, irrigation canals, drains and etc. therefore wind erosion control needs attention specially in arid and semi-arid regions. although in recent years, some polymeric materials have been used for improvement of structural st...

The compatibility between polymer and surfactant solutions is the main parameter for the optimisation of this combination method. In order to obtain the sufficient viscosity and the low interfacial tension of these solutions, it is necessary to know the conditions under which the different additives are compatible. We have studied the monophase to diphase transition of the system, the critical ...

We apply morphological image processing for quality inspection of microfluidic chips. Based on a comparison of measured topographies with design data, we provide a coherent solution to four central tasks in the quality assessment of injection moulded polymer devices: determination of channel depth, identification of burrs, calculation of transcription accuracy, and detection of defective region...

Introduction: Tissue engineering provides an approach for generating functionally replaceable tissue parts. Biodegradable scaffolds are used to support and guide the in-growth of cells. The idea is that the scaffolding material eventually disappears leaving only the necessary healthy tissue in a topologically required form (1,2). While numerous biodegradable polymers have been investigated as c...

Electroactive Polymers (EAPs) have a great potential to provide smart solutions to engineering problems in fields such as robotics, medical devices, power generation, actuators and sensors. This is because they yield some important characteristics that are advantageous over conventional types of actuators, like: lower weight, faster response, higher power density and quieter operation. Controll...

Fiber Reinforced Polymer (FRP) systems have gained much popularity as a method for reinforcing existing concrete structures. However a variety of sudden failure methods, such as debonding, delamination, and creep rupture have led to the development of code limitations on the strength that an FRP system can be considered to provide. The uncertainty brought on by the failure methods mentioned abo...

The presence of polymer chains grafted or adsorbed onto a surface can dramatically alter the forces that affect interactions between surfaces. The equilibrium properties of such polymer brush systems have been studied for the past two decades, yielding general agreement between theory and experiment. Conversely, the nonequilibrium properties of polymer brushes are still under intense theoretica...