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Investigation on optimizing the performance of conductance-based CNTs chemical sensors

Wen J. Li*, Mengxing Ouyang, Yu Zhang

*Corresponding author for this work

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

Signal-to-Noise Ratio (SNR) is a very essential parameter in determining a sensor's performance and ultimate resolution limit. For conductance-based CNTs chemical sensors, how to increase the response and suppress the noise is a critical issue in optimizing the sensor performance. In this paper, we discuss our experiments performed on conductance-based CNTs sensors, which were fabricated by DEP manipulation, to determine their response while using various activating current (e.g., 50nA-250μA), as well as under different ambient temperatures. The I-V characteristics, Temperature Coefficient of Resistance (TCR), and sensor response were discussed in detail. Also, we studied the relationship between SNR and activating current using different parameters, such as ambient temperature, various types of CNTs, as well as different CNTs sensor substrates. © 2010 IEEE.
Original languageEnglish
Title of host publication2010 IEEE Nanotechnology Materials and Devices Conference, NMDC2010
Pages207-211
DOIs
Publication statusPublished - 2010
Externally publishedYes
Event4th IEEE Nanotechnology Materials and Devices Conference (NMDC2010) - Monterey, United States
Duration: 12 Oct 201015 Oct 2010

Conference

Conference4th IEEE Nanotechnology Materials and Devices Conference (NMDC2010)
PlaceUnited States
CityMonterey
Period12/10/1015/10/10

Research Keywords

  • Carbon nanotubes
  • CNTs sensor
  • Signal to noise ratio

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