27 March 2018 Development of a PVDF Based Artificial Basilar Membrane
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Abstract
In spite of many studies concerning the potential of auditory nerve actions, the timing of neural excitation in relation to basilar membrane motion is still not well understood. In this study, therefore, a Piezoelectric Artificial Basilar Membrane (PABM) is fabricated using Denton Explorer evaporator. The proposed dynamical system is made of polyvinylidene fluoride membrane on which 40 chromium electrodes were deposited with thickness close to 104 Å. The PABM sensor was tested with variable engineering parameters that contribute to its frequency selection capabilities. To characterize the frequency selectivity of the PABM, mechanical displacements were measured using a very precise high-resolution data acquisition board. When electrical and acoustic stimuli were applied, the measured resonance frequencies were in the ranges of 600to2000. These results demonstrate that the mechanical frequency selectivity of this PABM is close to the human communication frequency range (300–3000 Hz), which is a vital feature of potential auditory prostheses.
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Mohammadsadegh Saadatzi, Mohammad Nasser Saadatzi, Vahid Tavaf, Sourav Banerjee, "Development of a PVDF Based Artificial Basilar Membrane", Proc. SPIE 10593, Bioinspiration, Biomimetics, and Bioreplication VIII, 1059318 (27 March 2018); doi: 10.1117/12.2296632; https://doi.org/10.1117/12.2296632
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