Micro instrumentation for characterizing thermoelectric properties of nanomaterials

Takahito Ono, Chia Cheng Fan, Masayoshi Esashi

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

Abstract

A micro tool for evaluating thermoelectric properties of low-dimensional materials is developed. It is expected that a one-dimensional thermoelectric material exhibits superior thermoelectric properties and low thermal conductivity due to its inherent nanoscale structure. By using these superior properties, high efficient thermoelectric power transformation devices may be realized. In this study, we developed micro instrumentation fabricated by micromachining for the characterization of thermoelectric properties of low-dimensional materials. The device consists of freely suspended heating elements and built-in microthermocouple as a sensing element on the heating elements. A bundle of Bi2Te3 nanowire, which is prepared by a silicon template method, was positioned onto the microdevice by manipulation. Measurements of the electric conductivity, thermal conductivity and Seebeck coefficient of the Bi2Te3 bundle were performed to show the feasibility of this device for measurements of thermoelectric properties of nanomaterials.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalJournal of Micromechanics and Microengineering
Volume15
Issue number1
DOIs
Publication statusPublished - 2005 Jan 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Mechanics of Materials
  • Mechanical Engineering
  • Electrical and Electronic Engineering

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