membranes – Page 2 – TechConnect Briefs

Shock Testing of Free Standing Silicon-Nitride and Beryllium Membranes

Brough D., Barrett L., Vanfleet R., Davis R., Liddiard S., Cornaby S., Coffin M., Brigham Young University, US

As micro and nanotechnology continue to advice into products, durability, reliability and robustness become important factors. One application where micro technology needs such qualities is X-ray windows. X-ray windows consist of free standing thin film [...]

Synthesis and Characterization of Poly(urethane-imide)-POSS nanocomposites

Gnanasekaran D., Reddy B.S.R., Central Leather Research Institute, IN

A series of Poly(imide-urethane)-POSS membranes were synthesized through the condensation reaction of anhydride terminated prepoly(imide) (API) and isocyanate terminated prepoly(urethane)POSS (IPU) by varying the amount of API and IPU . The API was synthesized by [...]

Graphene Nanoplatelet Membranes for Aerospace Applications

Rawal S., Ravine J., Czerw R., Lockheed Martin Space Systems Company, US

Graphene nanoplatelets (GNP), conceptually described as unrolled carbon nanotubes, exhibit attractive properties including the highest thermal conductivity known and twice the surface area of carbon nanotubes. By blending with a minimal ratio of carbon nanotubes [...]

NanoZeolites – small particles, small pore, big impact! Porous nanoparticles for environmental applications

Daniell W., Kohl A., Sauer J., NanoScape AG, DE

NanoScape has developed hydrothermal synthesis techniques which allow nanocrystalline, porous aluminosilicates (NanoZeolites) to be manufactured, currently on a 100kg p.a. scale. A range of NanoZeolites are available with pore sizes ranging from 3A to 100A. [...]

Sustainable Desalination of Fresh Water

Stover R.L., Energy Recovery Inc, US

Seawater reverse osmosis is an advanced desalination process used to filter water in which seawater is forced through a semi-permeable membrane, producing pure water on one side and concentrated brine on the other. The process, [...]

Sustainable Desalination of Fresh Water

Stover R.L., Energy Recovery Inc, US

Seawater reverse osmosis is an advanced desalination process used to filter water in which seawater is forced through a semi-permeable membrane, producing pure water on one side and concentrated brine on the other. The process, [...]

Filtration and emulsification with nanoengineered membranes

van Rijn C.J.M., Nijdam W., University of Wageningen, NL

With microengineering techniques it is possible to manufacture very precise perforated membranes. The pores, which are well defined by photolithographic methods, allow accurate separation of particles by size. The membrane thickness is usually smaller than [...]

Electrophoretic RNA Transport Through Transmembrane Carbon Nanotubes

Zimmerli U., Koumoutsakos P., ETH Zürich, CH

We study electrophoretic transport of RNA through carbon nanotubes embedded in membranes using molecular dynamics simulations. % Doped and naked carbon nanotubes are inserted into a dodecane membrane and a dimyristoylphosphatidylcholine lipid bilayer and we [...]

Microfabricated Silicon Apertures for Ion Channel Measurement

Wilk S.J., Goryll M., Petrossian L., Laws G.M., Goodnick S.M., Thornton T.J., Saraniti M., Tang J.M., Eisenberg R.S., Arizona State University, US

Ion channels are proteins that act as pores in cell membranes and allow only specific ions to pass through the cell wall. Here, we present a method for microfabrication of apertures in a silicon substrate [...]

Preparation of Functional LLDPE/LDPE/TiO2 Membranes

Wang X-Y, Wang X., Lee J-H., Wang X-Y, Wang X., Hong C-E, Chonbuk National University, KR

Nano-scaled TiO2 has now been used in polymer industry due to its promising properties in light catalyst and UV light shielding[1-3]. In the present paper, functional LLDPE/LDPE/TiO2 membranes were successfully manufactured. To solve the poor [...]