Optimization of Device Geometry of a Fully Implantable MEMS Hearing Aid Microphone by Genetic Algorithm
نویسندگان
چکیده
The paper presents the performance optimization of a MEMS accelerometer based microphone for the fully implantable hearing application. A genetic algorithm is employed to optimize the device geometry parameters satisfying the design constraints. The analytical model run on MATLAB and the simulation model implemented in COMSOL MULTIPHYSICS 4.2 show good agreement. Optimization with Genetic algorithm shows enhanced capacitance of 3.14 pF, displacement sensitivity of 2.49 nm/g and capacitive sensitivity of 2.48 fF/g.
منابع مشابه
Optimization of Device Geometry of a Fully-Implantable Hearing Aid Microphone
Introduction: The hearing impairment is affecting more than 360 million people all over the world suffer [1]. In India alone, 63 million people suffer from significant auditory loss [2]. Considerable interest in middle ear implants has emerged over the years to facilitate patients who do not receive significant benefits with conventional hearing aids. Also, the social stigma of wearing external...
متن کاملOptimization of MEMS Capacitive Accelerometer as Fully Implantable Middle Ear Microphone for Hearing Aid
This work describes the design and optimization of three prototypes of microelectromechanical systems (MEMS) capacitive accelerometer-based middle ear microphone. The microphone is intended for middle ear hearing aids as well as future fully implantable cochlear prosthesis. The analysis is done using COMSOL Multiphysics. The maximum applied acceleration was considered 1g. Human temporal bones a...
متن کاملOptimization of MEMS Based Capacitive Accelerometer for Fully Implantable Hearing Aid Application
INTRODUCTION: According to the 2015 estimates of WHO, 278 million people have disabling hearing impairment. In India, 63 million people suffer from significant auditory loss. The majority of all hearing loss is sensorineural loss which refers to hair cells damage in cochlea, a snail like structure inside the inner ear which connects to the auditory nerve in the brain. The use of conventional he...
متن کاملOptimization of Quantum Cellular Automata Circuits by Genetic Algorithm
Quantum cellular automata (QCA) enables performing arithmetic and logic operations at the molecular scale. This nanotechnology promises high device density, low power consumption and high computational power. Unlike the CMOS technology where the ON and OFF states of the transistors represent binary information, in QCA, data is represented by the charge configuration. The primary and basic devic...
متن کاملNano-Electrodeposits on MEMS Directional Microphones for Hearing Aid Optimization
We present an in-situ method for MEMS (microelectromechanical systems) microphone sensitivity optimization via the growth/retraction of nanoelectrodeposits to achieve high directionality in hearing aid applications. Using a DC bias at room temperature, nanoelectrodeposits are electrochemically deposited and dissolved on a Ag-doped Ge-Se solid electrolyte film on a microphone diaphragm. The grow...
متن کامل