Thermoelectric cool-film shear stress sensor

Jonathon Oiler, Rui Tang, Teng Ma, Hongyu Yu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Hot-wire anemometers, being a robust and highly sensitive method for measuring flow properties, can be limited in sensitivity where locally increasing the temperature may induce measurement inaccuracy such as when used in near-boiling fluids. In this environment, locally decreasing the temperature allows for a larger temperature difference between the sensor and the ambient environment, thereby increasing device sensitivity while maintaining single-phase convection heat transfer physics. In this letter, we present the new capability of using thermoelectrically cooled sensors to measure wall shear stress. The power required to maintain a constant sensor temperature was increased as the wall shear stress in the channel was increased, providing proof of concept.

Original languageEnglish (US)
Article number6814781
Pages (from-to)783-785
Number of pages3
JournalIEEE Electron Device Letters
Volume35
Issue number7
DOIs
StatePublished - Jul 2014

Keywords

  • Shear stress sensor
  • flow sensor
  • thermoelectrics

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

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