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Applied Physics Letters / Volume 96 / Issue 5 / DEVICE PHYSICS

Appl. Phys. Lett. 96, 053502 (2010); http://dx.doi.org/10.1063/1.3299003 (3 pages)

Dual-mode operation of flexible piezoelectric polymer diaphragm for intracranial pressure measurement

Chunyan Li1, Pei-Ming Wu2, Lori A. Shutter1, and Raj K. Narayan1

1Department of Neurosurgery, University of Cincinnati, Cincinnati, Ohio 45267, USA
2Department of Electrical and Computer Engineering, University of Cincinnati, Cincinnati, Ohio 45221, USA

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(Received 9 November 2009; accepted 6 January 2010; published online 1 February 2010)

The dual-mode operation of a polyvinylidene fluoride trifluoroethylene (PVDF-TrFE) piezoelectric polymer diaphragm, in a capacitive or resonant mode, is reported as a flexible intracranial pressure (ICP) sensor. The pressure sensor using a capacitive mode exhibits a higher linearity and less power consumption than resonant mode operated pressure sensor. In contrast, the latter provides better sensitivity and easier adaption for wireless application. The metrological properties of the dual-mode ICP sensor being described are satisfactory in vitro. We propose that the piezoelectric polymer diaphragm has a promising future in intracranial pressure monitoring.

© 2010 American Institute of Physics

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KEYWORDS and PACS

Keywords

biological techniques, diaphragms, piezoelectric devices, polymers, pressure measurement, pressure sensors

PACS

  • 87.85.Ox

    Biomedical instrumentation and transducers, including micro-electro-mechanical systems (MEMS)

  • 07.07.Df

    Sensors (chemical, optical, electrical, movement, gas, etc.); remote sensing

ARTICLE DATA

Digital Object Identifier
http://dx.doi.org/10.1063/1.3299003

PUBLICATION DATA

ISSN

0003-6951 (print)  
1077-3118 (online)

Publisher

$abstract.society.value is a Member of CrossRef American Institute of Physics

For access to fully linked references, you need to log in.
    Y. Xin, Z. Li, L. Odum, and Z. Y. Cheng, Appl. Phys. Lett. 89, 223508 (2006)APPLAB000089000022223508000001.


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