Fabrication of piezoelectric cantilever with microcone tip for sensing local stiffness of biological tissue

Hee Chang Roh, Dasom Yang, Won Hyoung Ryu

Research output: Contribution to journalArticle


For diseases that are difficult to detect by conventional imaging techniques, the development of a diagnostic method that allows sensors to be inserted into the human body to aid the diagnosis of local spots of the target tissue, is highly desirable. In particular, it is extremely difficult to determine whether vulnerable plaque can later develop into atherosclerosis using only imaging techniques. However, vulnerable plaques are expected to have slightly different mechanical properties than healthy tissue. In this study, we aim to develop a piezoelectric cantilever-type sensor that can be inserted into the human body and can detect the local mechanical properties of the target tissue. A piezoelectric polymer composite based on BaTiO3 nanoparticles was optimized for fabrication of a piezoelectric cantilever. Next, a micro-cone tip was fabricated at the end of the piezoelectric cantilever by thermal drawing. Finally, stiffness of biological tissue samples was measured with the piezoelectric cantilever sensor for verifying its functionality.

Original languageEnglish
Pages (from-to)743-748
Number of pages6
JournalTransactions of the Korean Society of Mechanical Engineers, B
Issue number11
Publication statusPublished - 2017 Nov


All Science Journal Classification (ASJC) codes

  • Mechanical Engineering

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