polymer – Page 7 – TechConnect Briefs

Palladium/Polymer nanocomposite based Chemiresistive SO2 Sensor

Meka D., Onbattuvelli V., Atre S., Prasad S., Portland State University, US

Here we present a highly sensitive nanocomposite based Chemiresistive SO2 sensor. The main objective of this research is focused on developing a cost effective, integrable and disposable gas sensor which detects SO2 gas molecules in [...]

Dispersion and incorporation of optical nanotracers

Samuel J., Raccurt O., Poncelet O., Tillement O., Tardif F., Commissariat à l’Energie Atomique, FR

Silica fluorescent nanoparticles of 40nm diameter are synthesized by a reverse microemulsion process. Numerous industrial applications involve the homogeneous incorporation of nanoparticles into a polymer matrix. Nevertheless, because of their low size, nanoparticles tend to [...]

Title: Nano/micro-structures formation driven by local protonation of polymer thin films via dip-pen nanolithography

Maedler C., Chada S., La Rosa A., Yan M., Portland State University, US

SUMMARY Nanostructures are created by stimulating the mechanical response of polymer materials upon confining protonation reaction locally via dip-pen. ABSTRACT While dip-pen nanolithography uses a sharp tip to anchor molecules on the substrate to form [...]

Novel surface architectures for biomimetic lipid membranes

Reimhult E., Merz C., Ye Q., Textor M., Swiss Federal Institute of Technology (ETH Zürich ), CH

Many important biological processes occur at, via or across one of the various lipid membranes present in the cell. These include transport governed by transmembrane proteins constituting more than 50% of all drug targets of [...]

Controlled Surfaces and Novel Polymers for Personal Care: Self-Assembly of Polymers and Surface Modification

Mowers W.A., Berg M.C., Suddaby N., Bercovici D., Soane D., Soane Labs / Cosmetica, US

Cosmetica develops and applies nanotechnology and advanced polymer chemistry to create novel products for the cosmetic industry. We achieve this goal by controlling the spontaneous self-assembly of polymers or colorants at surfaces. Current research projects [...]

Intrinsic Effects of Materials on Superhydrophobicity of Polymer Replicas from Nature

Lee S.M., Kwon T.H., Pohang University Science and Technology, KR

The present work suggests a mass-producible and large scale fabrication method of superhydrophobic polymeric surfaces by means of material processing equipments which can maximize productivity and cost effectiveness. We fabricated two types of polymeric lotus [...]

Layered Oxide Polymer Nanocomposites: Synthesis, Characterization, and Strategies for Achieving Enhanced Barrier Property

Hansen T.J., Barber P., Ma J., Ploehn H.J., zur Loye H.-C., University of South Carolina, US

Our research goal is to enhance the gas barrier of polymer nanocomposites using exfoliated layered materials. We have synthesized various layered oxides, ranging from layered polysilicates to perovskites, and explored novel modification techniques. Polymer films [...]

Formation and Coatings of Fine Particles in Jets of Supercritical Fluids

Gokhale A., Shen Y., Khusid B., Dave R., Pfeffer R., New Jersey Institute of Technology, US

Recently published studies of the formation of polymer particles in supercritical carbon dioxide are limited to the use of good organic solvents or their mixtures and relatively wide nozzles. In contrast, we use the new [...]

In Situ Synthesis of Carbon Nanotubes by Polymer Materials

Huang C.W., Hsu L.C., Li Y.Y., CCU, TW

Catalytically grown carbon nanotubes were prepared by in situ thermal decomposition of the polymer materials. Polymer material (PEG, polyethylene glycol) was employed as carbon source and nickel-based materials were used as catalytic precursors. These materials [...]

Elastomeric Composites to Reduce the Effects of Trunnion Mode in Inertial Devices

Perez Ma., Shkel A.M., University of California Irvine, US

Composites have long been known for their ability to combine the properties of dissimilar materials to create properties ideally tailored for an application. We propose applying these features to MEMS in order to reduce the [...]