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Lead-Free piezoelectric diaphragm biosensors based on micro-machining technology and chemical solution deposition

  • Xi'an Jiaotong University
  • Simon Fraser University

Research output: Contribution to journal › Article › peer-review

7 Scopus citations

Abstract

In this paper, we present a new approach to the fabrication of integrated silicon-based piezoelectric diaphragm-type biosensors by using sodium potassium niobate-silver niobate (0.82KNN-0.18AN) composite lead-free thin film as the piezoelectric layer. The piezoelectric diaphragms were designed and fabricated by micro-machining technology and chemical solution deposition. The fabricated device was very sensitive to the mass changes caused by various targets attached on the surface of diaphragm. The measured mass sensitivity value was about 931 Hz/μg. Its good performance shows that the piezoelectric diaphragm biosensor can be used as a cost-effective platform for nucleic acid testing.

Original languageEnglish
Article number69
JournalSensors (Switzerland)
Volume16
Issue number1
DOIs
StatePublished - 12 Jan 2016

Keywords

  • Chemical solution deposition
  • Lead-free
  • Piezoelectric diaphragm biosensor

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