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Inês S. Garcia - IEEE Xplore Author Profile

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Satellite gravimetry applications require sub-ng acceleration resolution at frequencies below 100 mHz, demanding low-noise (mechanical-thermal, 1/f and electronic) and high-sensitivity MEMS sensors. The electrostatic pull-in time-based transduction enables very high sensitivities (75 μs/(μm/s2) demonstrated) compared to direct capacitive transduction. The high-resolution requirement calls for larg...Show More
MEMS accelerometers have been around for many years and became a key element to different applications, such as inertial navigation, or geophysical sensing. Some of those applications require multi-axis sensing. To address the challenge of measuring accelerations in 3 axis with comparable transduction, a novel SOI-based 3 axis MEMS accelerometer based on hierarchical structures is presented, featu...Show More
A 1D MEMS (Micro-Electro-Mechanical Systems) mirror for LiDAR applications, based on vertically asymmetric comb-drive electrostatic actuators, is presented in this work employing a novel fabrication process. This novel micromachining process combines typical SOI-based bulk micromachining and grayscale lithography, enabling the fabrication of combs actuators with asymmetric heights using a single l...Show More
A very high-resolution SOI (silicon-on-insulator) MEMS (Micro-Electro-Mechanical Systems) accelerometer for geodetic space grade applications using pull-in time measurements is presented here. Parallelplates implemented in the handle-layer are used to provide the necessary squeeze-film damping, while increasing the effective-mass. Large mass (126 mg) devices with low-Q (quality factor of 0.53) hav...Show More