Dynamic change of the surface area and topology of elastomers is used as a general, environmentally friendly approach for effectively detaching micro- and macro-fouling organisms adhered on the elastomer surfaces. Deformation of elastomer surfaces under electrical or pneumatic actuation can debond various biofilms and barnacles. The bio-inspired dynamic surfaces can be fabricated over large are...

Modeling of complex systems requires large and expensive computational systems. Costs processing time can be reduced by more than half in a well-managed cloud environment. the flow ethylene propylene diene monomer (EPDM) through Garvey die was achieved employing latest computer technology commercially available at modest cost. The description stress–strain behavior for EPDM done using Otswald-d...

Immiscible blends of ethylene?propylene?diene?monomer (EPDM) and polyoxymethylene (POM), when EPDM is the major phase were compatibilized on addition an ionomer, poly(ethylene?co?methacrylic acid). The inclusion ionomer reduced interfacial tension between two phases, such that diameter POM domains significantly to 0.5 2 ?m, typical required toughen ductile polymers. mechanical properties result...

Resume In future years, fuel cells are expected to represent a promising technology as a source of heat and electricity in buildings and of electrical power for vehicles, since fossil fuels are exhausting and significantly degrade air quality. It is well known that, when exposed to a hydrogen environment, hydrogen embrittlerment may affect materials such as iron and steel. But these are not the...

Dielectric elastomer generators (DEGs) are attractive candidates for harvesting electrical energy from mechanical work since they comprise relatively few moving parts and large elastomer sheets can be mass produced. Successfully demonstrations of the DEG prototypes have been reported from a diverse of energy sources, including ocean waves, wind, flowing water and human movement. The energy dens...

It is previously known that under inflation alone a spherical rubber membrane balloon may bifurcate into a pear shape when the tension in the membrane reaches a maximum, but the existence of such a maximum depends on the material model used: the maximum exists for the Ogden model, but does not exist for the neoHookean, Mooney-Rivlin or Gent model. This paper discusses how such a situation is ch...

An elastomer-based energy storage system for MEMS has been designed, built, and tested. Micro rubber bands have been fabricated from silicone using two different methods, laser-cut and molded, and assembled into silicon microstructures fabricated in a two-mask silicon-on-insulator (SOI) process. Using silicon hooks and force gauges designed in this process, these micro rubber bands have been ch...

The application of a sufficiently strong strain perpendicular to the pitch axis of a monodomain cholesteric elastomer unwinds the cholesteric helix. Previous theoretical analyses of this transition ignored the effects of Frank elasticity which we include here. We find that the strain needed to unwind the helix is reduced because of the Frank penalty and the cholesteric state becomes metastable ...

Plastic/rubber materials used as fasteners in equipment for analyzing or removing organic pollutants water treatment technologies form an essential part of the device. Micropollutants are typically present at very low concentrations (ng/L to µg/L). Therefore, when designing, example, units advanced oxidation processes (AOPs) planning sample handling, it is necessary assess whether material comp...