Fabrication and resonant behavior of PZT thick film cantilever for BioChip

Hyung Joon Kim, Yong Bum Kim, Ji Yoon Kang, Tab Song Kim

Research output: Contribution to journalArticle

9 Scopus citations

Abstract

PZT(52/48) thick films with an Pb-based complex oxide (PCW) additive were prepared on Pt/TiO2/YSZ/SiO2/Si substrate by new hybrid method based on the screen printing. It is found that solinfiltration for thick films fabrication process significantly improves the electrical properties due to the improved structural compactness. By applying these high quality piezoelectric thick films on micro cantilever devices, a highly sensitive thick film cantilever for mass(ng-□) detection devices is successfully fabricated. Resonant frequency and displacement of PZT-0.12PCW thick film cantilever for biochip are measured by laser vibrometer system as a function of cantilever size (width, length). We change the added mass from 4ng to 5 D through Au deposition. The shorter cantilever is more sensitive for mass change and it is found that the sensitivity of cantilever decreases due to viscous damping effect in liquid. Finally, the application of these PZT-0.12PCW thick film cantilever devices to a protein detector is discussed.

Original languageEnglish (US)
Pages (from-to)11-20
Number of pages10
JournalIntegrated Ferroelectrics
Volume50
DOIs
StatePublished - Jan 1 2002

    Fingerprint

Keywords

  • Biochip
  • Cantilever
  • PZT
  • 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

Cite this