This Science News Wire page contains a press release issued by an organization and is provided to you "as is" with little or no review from Science X staff.

Highlight: High density, high-aspect-ratio precision polyimide nanofilters

December 16th, 2009

Collaborative users from Creatv MicroTech, Inc. and Los Alamos National Laboratory, working with Argonne National Laboratory CNM's Nanofabrication & Devices Group, have demonstrated a novel fabrication process that produces high-porosity polymer nanofilters with smooth, uniform and straight pores and high aspect ratios.

Nanofilters have a wide range of applications for various size-exclusion-based separations in bioseparation and nanomedicine, such as laboratory assays, removing bacteria and viruses, drug delivery devices, implants, and sieving of nanoscale materials.

The process uses electron-beam lithography and energetic neutral atom beam lithography and epitaxy (ENABLE) techniques.

This approach allows for the fabrication of ordered hole arrays of a predetermined size and shape with high density. The method has the potential to produce a new generation of high-precision, high-porosity, bio-compatible filters with pore sizes down to 100 nm.

More information:
O.V. Makarova, C-M. Tang, P. Amstutz, R. Divan, A. Imre, D.C. Mancini, M. Hoffbauer, and T. Williamson, J. Vac. Sci. Technol. B, 27, 2585-2587 (2009)

Provided by Argonne National Laboratory

Citation: Highlight: High density, high-aspect-ratio precision polyimide nanofilters (2009, December 16) retrieved 21 August 2026 from https://sciencex.com/wire-news/22442915/highlight-high-density-high-aspect-ratio-precision-polyimide-nan.html

This document is subject to copyright. Apart from any fair dealing for the purpose of private study or research, no part may be reproduced without the written permission. The content is provided for information purposes only.