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

被引：54

作者：

Li, Chunyan ^{[1
]}

Wu, Pei-Ming ^{[2
]}

Shutter, Lori A. ^{[1
]}

Narayan, Raj K. ^{[1
]}

机构：

[1] Univ Cincinnati, Dept Neurosurg, Cincinnati, OH 45267 USA

[2] Univ Cincinnati, Dept Elect & Comp Engn, Cincinnati, OH 45221 USA

来源：

APPLIED PHYSICS LETTERS | 2010年 / 96卷 / 05期

关键词：

biological techniques; diaphragms; piezoelectric devices; polymers; pressure measurement; pressure sensors; ICP;

D O I：

10.1063/1.3299003

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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.

引用

页数：3

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