A novel design of piezo-resistive type underwater acoustic sensor using SOI wafer

Sie Yu Li, Chih Chao Hsu, Shi Zheng Lin, Ru Min Chao

研究成果: Conference contribution

2 引文 斯高帕斯(Scopus)

摘要

This paper reports a novel design of a MEMS type underwater acoustic sensor using SOI (Silicon in Insulator) wafer as the starting material. The structure layer of the SOI wafer provides a uniform membrane thickness which is perfect for sensing structure. By chemical vapor deposition thin layers of silicon nitride and poly-silicon, the sensing membrane and piezo-resistive material are patterned and etched using lithography and dry etching processes, respectively. After the gold wire is patterned, the entire back side of the sensing membrane is etched in order to create the cavity. The waterproof of the hydrophone is completed by deposition a thin layer of Parylene polymer material. Another fabrication technique starting from a 6'' single-crystalline silicon wafer by controlled etching method will also present. The sensitivity comparison between the MEMS type acoustic hydrophone and the piezoelectric one is made, and some conclusions are drawn. We have proven that the controlled etching process can create the sensing membrane without difficulties. Currently, the research project is still undergoing, part of the results will be shown at the conference.

原文English
主出版物標題2007 16th IEEE International Symposium on the Applications of Ferroelectrics, ISAF
發行者IEEE Computer Society
ISBN(列印)1424401380, 9781424401383
DOIs
出版狀態Published - 2006 1月 1
事件OCEANS 2006 - Asia Pacific - , Singapore
持續時間: 2007 5月 162007 5月 19

出版系列

名字OCEANS 2006 - Asia Pacific

Other

OtherOCEANS 2006 - Asia Pacific
國家/地區Singapore
期間07-05-1607-05-19

All Science Journal Classification (ASJC) codes

  • 電氣與電子工程
  • 海洋工程

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