title: Note: Detecting flow velocity with high purity semiconducting single-walled carbon nanotubes.
abstract: 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.
authors.affiliation: Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-806, South Korea.
authors.forename: Seungho
authors.initials: S
authors.lastname: Lee
authors.forename: Wonsuk
authors.initials: W
authors.lastname: Jung
authors.forename: Ju Yeon
authors.initials: JY
authors.lastname: Woo
authors.forename: Soohyun
authors.initials: S
authors.lastname: Kim
authors.forename: Chang-Soo
authors.initials: CS
authors.lastname: Han