Dry densification of carbon nanotube bundles
Artikel i vetenskaplig tidskrift, 2010

A dry method for densifying vertically aligned carbon nanotube bundles is proposed and experimentally validated. The process uses the deposition of thin SiO2 films to seal the porous CNT bundles at low pressure. When the CNT bundles are transferred back to ambient pressure they are densified by the pressure difference obtained between the inner and outer sides of the thin film. The effects of the densification have been studied for different thicknesses of SiO2 films deposited by two different deposition techniques. The diameters of the narrowest densified sections are 26 +/- 3% of their original sizes after dry densification by 50 nm thick SiO2. The proposed dry densification method is also compared to existing liquid-based methods and its limitations are discussed. (C) 2010 Elsevier Ltd. All rights reserved.

fabrication

membranes

chemical-vapor-deposition

growth

films

dense

Författare

Teng Wang

Chalmers, Teknisk fysik, Elektronikmaterial och system

Kjell Jeppson

Chalmers, Teknisk fysik, Elektronikmaterial och system

Johan Liu

Chalmers, Teknisk fysik, Elektronikmaterial och system

Carbon

0008-6223 (ISSN)

Vol. 48 13 3795-3801

Styrkeområden

Nanovetenskap och nanoteknik

Ämneskategorier

Elektroteknik och elektronik

Annan elektroteknik och elektronik

DOI

10.1016/j.carbon.2010.06.042

Mer information

Skapat

2017-10-08