Micropressure sensor fabrication without problem of stiction for a wider range of measurement

H. S. Ko, C. W. Liu, Chie Gau

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

The objective of this paper is to present a novel fabrication process for one or arrays of micropressure sensors. The fabrication process is almost the reverse of the surface micromachining process used for the pressure sensor. This allows the use of SU-8 to form cavity that can be much deeper for pressure measurement. Thus, the sensor made can provide a much wider range of pressure measurement. The fabrication process allows arrays of pressure sensors integrated into a complicated microchannel system for detailed pressure flow measurements. The fabrication process has completely absence of diaphragm stiction. Theoretical analysis for the stress and deformation of the pressure sensor diaphragm is derived and used for diaphragm design calculation. More detailed design and fabrication techniques developed for this sensor is presented.

Original languageEnglish
Pages (from-to)261-267
Number of pages7
JournalSensors and Actuators, A: Physical
Volume138
Issue number1
DOIs
Publication statusPublished - 2007 Jul 20

Fingerprint

stiction
Stiction
Fabrication
Pressure sensors
diaphragms
pressure sensors
Pressure measurement
Diaphragms
fabrication
sensors
Sensors
pressure measurement
Surface micromachining
flow measurement
Flow measurement
micromachining
microchannels
Microchannels
cavities

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

Cite this

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Micropressure sensor fabrication without problem of stiction for a wider range of measurement. / Ko, H. S.; Liu, C. W.; Gau, Chie.

In: Sensors and Actuators, A: Physical, Vol. 138, No. 1, 20.07.2007, p. 261-267.

Research output: Contribution to journalArticle

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