Enhanced Visualization of Biopsy Needle using a MEMS Actuator Precise localization of needle tip is important for the biopsy. A mini actuator that radiates a low-intensity ultrasound burst was manufactured with MEMS technology. Interference between the radiated and diagnostic pulses was observe ...
Electromagnetic Bandgap Structure Containing High-k Dielectric Ceramics Electromagnetic bandgap structure (EBG) is an artificial dielectric composite, in which dielectric materials with high and low permittivities are periodically arranged in space. EBG can be rega ...
A Wireless Accelerometer Using Micromachined Piezoelectric Sensor Vibration monitoring is often carried out for machines fault diagnosis. The state of art vibration sensors are manually and repetitively installed, which causes inconsistency in the measurement results. The long cables, lar ...
Acoustic Transducer Dimension of the in-plane poled piezoelectric diaphragm: electrode width=60 μ m; electrode spacing=250 μ m; radius=3.5 mm. The effective coupling coefficient is 3.08 %. The quality factor Q value is 39.96. Schematic diagram o ...
In-plane Poled Piezoelectric Diaphragm Double-sided spiral electrodes can generate an in-plane poling scheme. The diaphragm utilizes d 33 effect to generate the in-plane strain (thus a d 33 mode transducer ), which is converted to an out-of-plane displacement due to the constrai ...
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