Fabrication and evaluation of flowmeter with focused-ion-beam system

Dae Keun Choi, Sang Hoon Lee

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

Abstract

In this paper, we fabricated and evaluated the piezoresistive type flowmeter with focused-ion-beam (FIB) system. The flowmeter body is made up of the low stress silicon nitride, and the nanometer sized piezoresistive layer is deposited with FIB system for the smaller measuring area. The flowmeter is evaluated in the wind tunnel, and the 0~4m/s air flows are applied. Although the sensitivity, ΔR/R shows the negative behavior unlike the conventional piezoresistive layer due to the added materials during the FIB process, the measurement results show the ΔR/R has a suitable sensitivity (-1.04E-2/ms-1) and a rapid response time (0.8sec). Those results represent the fabricated piezoresistive type air flowmeter has the possibility for the small area detection.

Original languageEnglish
Title of host publicationMaterials Technologies, Automation Systems and Information Technologies in Industry
Pages324-329
Number of pages6
DOIs
StatePublished - 2013
Event2013 International Conference on Mechatronic Systems and Materials Application, ICMSMA 2013 - Guangzhou, China
Duration: 26 Jun 201327 Jun 2013

Publication series

NameApplied Mechanics and Materials
Volume389
ISSN (Print)1660-9336
ISSN (Electronic)1662-7482

Conference

Conference2013 International Conference on Mechatronic Systems and Materials Application, ICMSMA 2013
Country/TerritoryChina
CityGuangzhou
Period26/06/1327/06/13

Keywords

  • Flowmeter
  • Focused-ion-beam (FIB) system
  • MEMS
  • Piezoresistive

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