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Pressure sensing of air flow using multi-walled carbon nanotubes

다중벽 탄소 나노튜브를 이용한 유동 압력 검출

  • 송진원 (한국기계연구원 나노공정장비연구센터) ;
  • 이종홍 (한국기계연구원 나노공정장비연구센터) ;
  • 이응숙 (한국기계연구원 나노공정장비연구센터) ;
  • 한창수 (한국기계연구원 나노공정장비연구센터)
  • Published : 2007.09.29

Abstract

We describe the fabrication and characterization of a doubly clamped multi-walled carbon nanotube (MWNT). The device was assembled by an application of electric field in solution. The MWNT was clamped on end of metal trench electrodes in solution and deposited with additional platinum (Pt) on edge of electrode for firmly suspending the MWNT by focused ion beam (FIB). The MWNTs range of diameter and length were 100 to 150 nm and 1.5 to $2{\mu}m$, respectively. Electrical characteristics of fabricated devices were measured by I-V curve and impedance analysis. The mechanical deformation was observed by resistivity in high air pressure. Resonant frequency around 6.8 MHz was detected and resistivity was linearly varied according to the magnitude of air pressure. This device could have potential applications in nanoelectronics and various sensors.

Keywords

References

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