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A wireless strain sensor system has been designed for human motion detection. The amorphous carbon strain sensor was fabricated on a flexible substrate and integrated in a wireless module. Amorphous carbon was sputter-deposited on a 125-µm thick polyimide film and the strain gauges were tailored using laser micromachining followed by an encapsulation process to package the sensor in elastic polydimethylsiloxane...
A wireless sensor system has been prototyped to monitor bladder volume in a small animal. The capacitance-based sensor was laser-micromachined from a polyimide film to form an interdigitated finger structure, followed by a sputtering process to deposit aluminum thin film. The entire sensor was encapsulated with biocompatible and elastic polydimethylsiloxane (PDMS). A passive telemetry platform based...
In this work, we developed a dual-sensor system to monitor the symptoms in gastroesophageal reflux disease (GERD). The system consists of an implantable transponder and an external reader. The passive telemetry for signal transduction is based on an inductive link between two coil antennas. The reader supplies radio frequency power, obtains and stores the backscattered sensory data. The dual-sensor...
A wireless strain sensor system has been designed to monitor the bladder volume in patients suffering from urinary incontinence. An interdigitated capacitive (IDC) strain sensor was micro-machined from a 127-µm thick brass shim with a laser system, followed by an encapsulation process to package the sensor in elastic polydimethylsiloxane (PDMS). A proof-of-concept passive telemetry platform was developed...
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