PVDF-Based Piezoelectric Microphone for Sound Detection Inside the Cochlea: Toward Totally Implantable Cochlear Implants

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We report the fabrication and characterization of a prototype polyvinylidene fluoride polymer-based implantable microphone for detecting sound inside gerbil and human cochleae. With the current configuration and amplification, the signal-to-noise ratios were sufficiently high for normally occurring sound pressures and frequencies (ear canal pressures > 50-60 dB SPL and 0.1-10 kHz), though 10 to 20 dB poorer than for some hearing aid microphones. These results demonstrate the feasibility of the prototype devices as implantable microphones for the development of totally implantable cochlear implants. For patients, this will improve sound reception by utilizing the outer ear and will improve the use of cochlear implants.
Publisher
SAGE PUBLICATIONS INC
Issue Date
2018-05
Language
English
Article Type
Article
Keywords

SENSORS; NANOGENERATORS; FLUORIDE; FIBERS; FUTURE; MIDDLE; FILM

Citation

TRENDS IN HEARING, v.22

ISSN
2331-2165
DOI
10.1177/2331216518774450
URI
http://hdl.handle.net/10203/242342
Appears in Collection
MS-Journal Papers(저널논문)
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