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Mems Transducer For Hearing Aid Device, Houwen Tang
Mems Transducer For Hearing Aid Device, Houwen Tang
Electronic Theses and Dissertations
A study of implantable middle ear MEMS piezoelectric transducer for hearing aids was developed. The physical vibration deflection at the tip of the transducer is simulated using finite element method. Further, a study of thermoelastic damping effect of four designed MEMS mirrors used as resonators is presented. An optical measurement system based on Mach-Zehnder interferometer is
Particle Motion In Flows: Contributions To Airborne Aerosol Measurement, Maryam Darbeheshti
Particle Motion In Flows: Contributions To Airborne Aerosol Measurement, Maryam Darbeheshti
Electronic Theses and Dissertations
Accurate, in situ measurement of airborne particles is critical in understanding the global atmosphere. An airborne instrument is designed to sample and measure the aerodynamic diameter of particles in the size range of 1-30 mm. Knowledge of the aerodynamic size of a particle includes the impact of unknown variables such as shape, size and density of a particle. Particles of the same aerodynamic diameter have the same trajectory and settling velocity in air, regardless of their actual size, density or shape. Knowing the time a particle resides in air can improve the climate models substantially.
The developed instrument consists of …