Characterization of thermoelectric oxide nanofibers using MEMS device

Weihe Xu, Guitao Zhang, Hamid Hadim, Yong Shi

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Thermoelectric oxide nanofibers prepared by electrospinning was expected to have a significantly reduced thermal conductivity compared with their bulk forms. However, the measurement of the thermal conductivity of such a single nanofiber was very difficult because of sample preparation, sample loading and the lack of characterization tools. In this work, a technology that can be used to measure the thermal conductivity of a single nanofiber prepared by electrospinning was developed. A special Si template was designed to collect and transfer the thermoelectric nanofibers prepared by electrospinning. A microelectro-mechanical (MEMS) device was designed and fabricated to measure the thermal conductivity of a single nanofiber. The structure of the MEMS device was specially designed therefore a single nanofiber collected by the special Si template can be transferred onto the MEMS device. A La0.95Sr 0.05CoO3 nanofiber with the diameter of 290 nm was prepared and characterized by this technology. The measured thermal conductivity of the nanofiber was 2.07 W/m•K, which is 30% lower than that of the bulk form La0.95Sr0.05CoO3 previously reported.

Original languageEnglish
Title of host publication15th International Conference on Advanced Vehicle Technologies; 10th International Conference on Design Education; 7th International Conference on Micro- and Nanosystems
DOIs
StatePublished - 2013
EventASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013 - Portland, OR, United States
Duration: 4 Aug 20137 Aug 2013

Publication series

NameProceedings of the ASME Design Engineering Technical Conference
Volume1

Conference

ConferenceASME 2013 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference, IDETC/CIE 2013
Country/TerritoryUnited States
CityPortland, OR
Period4/08/137/08/13

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