Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
737483 | Sensors and Actuators A: Physical | 2013 | 5 Pages |
Abstract
We demonstrated a novel MEMS artificial basilar membrane composed of a piezoelectric beam array that mimics the passive frequency selectivity of the cochlea and exhibits acoustic-to-electrical energy conversion. Each beam was designed to have a unique resonance frequency. To determine the resonance frequencies of the beams, the displacement and piezoelectric voltage were measured by applying a periodic chirped signal with a sound pressure level of 109.7 dB. The measured resonance frequencies were in the range 10–37 kHz. The piezoelectric signal was used to modulate a finite pulse-width signal for electrical stimulation; the pulse widths were in the range 0.43–5.1 ms with sound pressure levels in the range 84.9–112.4 dB.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Electrochemistry
Authors
Jongmoon Jang, Sangwon Kim, David J. Sly, Stephen J. O’leary, Hongsoo Choi,