Please use this identifier to cite or link to this item: http://hdl.handle.net/1783.1/6312

Membrane nanopumps based on porous alumina thin films, membranes therefor and a method of fabricating such membranes

Authors Sheng, Ping
Wang, Ning
Miao, Jianying
Yang, Zhi-Yu
Yang, Shihe
Zhang, Xinyi
Issue Date 2009-06-02
Source US Patent , 7,540,717 B2, 2009
Summary A technique has been developed to fabricate micro- or nanopumps based on porous alumina thin films. The main body of the nanopump consists of a porous alumina thin film (containing nano-sized channels of about 40-300 nm in diameter) with conductive surfaces (e.g. Au coating layers) on both sides of the film. Through the fabrication of nanochannels in (the alumina films) and the subsequent annealing and surface activation processes, high-efficiency micro- or nanopumps can be made. The nanofluidic flow through the nanochannels of the alumina thin films is driven by an electric field with no moving parts. The flow rate (up to 50 millilitres/(min·cm<sup>2</sup> )) of water through the alumina thin film can be continuously tuned through the intensity of the electric field, i.e., the DC electric potential applied across the nanochannels.
Subjects
Rights This patent is also available at HKUST Technology Transfer Center Patent Search at <http://patentsearch.ttc.ust.hk/ListPatentsDetail.asp?id=297>
Language English
Format Patent
Access
Files in this item:
File Description Size Format
US7540717.pdf 1148330 B Adobe PDF