Study on three-dimensional micromachining using synchrotron radiation etching |
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Authors: | N. Nishi T. Katoh H. Ueno S. Sugiyama |
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Affiliation: | (1) Faculty of Science and Engineering, Ritsumeikan University, 1-1-1 Noji-Higashi, Kusatsu, Shiga 525-8577, Japan E-mail: sugiyama@ritsumei.ac.jp, JP;(2) Sumitomo Heavy Industries, Ltd. 2–1-1 Yatocho, Nishi-Tokyo, Tokyo 188–8585, Japan, JP |
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Abstract: | In this paper, we proposed a new approach of three-dimensional (3-D) micromachining without using any masks. This approach is a direct writing using synchrotron radiation (SR) etching. Several approaches to fabricate 3-D microstructures using photo-lithography have been proposed. However, these approaches are limited to fabricate microstructures due to the using mask process. SR etching is a dry process, and the etching rate of PTFE (polytetrafluoroethylene) is so high (100 μm/min) in vacuum using the SR white light. By utilizing a high processing speed and smoothness of the etched surfaces, SR etching might have a potential for 3-D micromachining by combining the direct writing with a stage having a high degree of freedom. Here, we reported the results of 3-D micromachining of PTFE using SR etching in vacuum and examined the dependence of SR etching of PTFE on the etching environment under an atmospheric pressure of He. Received: 10 August 2001/Accepted: 24 September 2001 This paper was presented at the Fourth International Workshop on High Aspect Ratio Microstructure Technology HARMST 2001 in June 2001. |
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