Oxidation of silicon electrochemically etched microchannels arrays

Junxu Wu, Lianwei Wang, Xiaoming Chen, Mingjie Zheng, Weili Liu, Zhitang Song, P. M. Sarro

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

Macroporous silicon technology is an important method to fabricate microchannels on silicon. The formation of insulator layer on the sidewall of the channels is necessary for electrical isolation or passivation of the surface. Oxidation is one of the preferred options. In this paper we investigate the effect of various oxidation processes on the smoothness of the sidewalls of the high aspect ratio macropores. Using thermal oxidation with a combination of dry and wet steps, the shape and structures inside silicon microchannnels can be changed after oxidation to certain thickness. To keep the surface inside the microchannels smooth, it is only possible to get oxide layer with limited thickness by oxidation in microchannel if the channel size is very small.

Original languageEnglish
Title of host publicationProceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
Pages399-402
Number of pages4
DOIs
StatePublished - 2006
Event1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS - Zhuhai, China
Duration: 18 Jan 200621 Jan 2006

Publication series

NameProceedings of 1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS

Conference

Conference1st IEEE International Conference on Nano Micro Engineered and Molecular Systems, 1st IEEE-NEMS
Country/TerritoryChina
CityZhuhai
Period18/01/0621/01/06

Keywords

  • Macroporous silicon
  • Microchannel
  • Oxidation

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