Note: Detecting flow velocity with high purity semiconducting single-walled carbon nanotubes

Seungho Lee, Wonsuk Jung, Ju Yeon Woo, Soohyun Kim, Chang Soo Han

Research output: Contribution to journalArticlepeer-review


We report the measurement of fluid velocity on a semiconducting single-walled carbon nanotubes film in a microfluidic channel. To investigate the mechanism related to electrical signal change, we performed various experiments along with changing the flow velocity, the ion concentration and liquid viscosity, etc. Our result suggests that the sensing of flow velocity is a closely related to a pulsating asymmetrical thermal ratchet model. The electric signal change was strongly dependent on the electrode alignment, and the channel width of the sample. As the result, we achieved highly sensitive detection of the fluid, roughly 4 times greater than previous results.

Original languageEnglish
Article number036110
JournalReview of Scientific Instruments
Issue number3
Publication statusPublished - 2013 Mar

Bibliographical note

Funding Information:
This research was supported by Global Frontier Research Center for Advanced Soft Electronics and Green Nano Technology, MEST in Korea.

ASJC Scopus subject areas

  • Instrumentation


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