Preparation of diffuser type micropump using screen-printed PZT-PCW thick films

Yong Bum Kim, Hyung Joon Kim, Chae Il Cheon, Doo Jin Choi, Tae Song Kim

Research output: Contribution to journalArticle

6 Scopus citations


This paper describes the preparation and experimental results of the piezoelectric actuating diaphragm and the diffuser type micropump using screen printing thick-film technologies and Si micro-machining. The micropump has a pumping chamber with an oscillating diaphragm which compresses the pumping chamber. Inlet and outlet planar diffusers direct the liquid flow. The micropump is a stack of two layers bonded together: one silicon piece with Si diaphragm actuator using PZT-PCW thick films, other piece having pumping chamber, planar diffuser and fluidic access holes. Si diaphragm of about 15-25 μm thickness are prepared on Si(100) wafers by TMAH wet etching. The PZT-PCW thick films are prepared by hybrid method of screen printing modified with PZT sol-gel application. The results from this study show that it is good to perform combination of screen printed PZT thick-film onto micromachined Si structure.

Original languageEnglish (US)
Pages (from-to)61-70
Number of pages10
JournalIntegrated Ferroelectrics
StatePublished - 2002


  • Diffuser-type micropump
  • PZT
  • Screen printing
  • Thick film

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Control and Systems Engineering
  • Ceramics and Composites
  • Condensed Matter Physics
  • Electrical and Electronic Engineering
  • Materials Chemistry

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