Bulk carbon nanotubes as sensing element for temperature and anemometry micro sensing

作者: Victor TS Wong , Wen J Li , None

DOI: 10.1109/MEMSYS.2003.1189682

关键词:

摘要: Bulk multi-walled carbon nanotubes (MWNT) were successfully and repeatably manipulated by AC electrophoresis to form resistive elements between Au microelectrodes demonstrated potentially serve as novel temperature anemometry sensors. We have measured the coefficient of resistance (TCR) these MWNT bundles also integrated them into hot-film constant current configuration for dynamic characterization. It was discovered that resulting device could be operated in /spl mu/W range, which is three orders magnitude lower than conventional MEMS polysilicon based shear stress For example, achieve a overheat ratio 0.1, only 10 mu/A needed heat bundle compare mA range polysilicon-based Moreover, exhibited very fast frequency response (>100 kHz) mode, higher its reported counterparts this mode operation. Our processing technology scalable producing sensing ranging from 5 mu/m 15 length.

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