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Leveraging the IC capabilities for sensor interface, wireless communication, energy supply and management, timing, and computing, we developed integrated microsystems for various applications, such as IoT sensor nodes, mobile devices, wearables, invasive and implantable sensing devices, neural interfaces, and surgical navigation tools. In the system integration process, we have collaborated with experts in other fields very closely and played a leading role in many cases. We have also worked on 2.5D and 3D integration technologies.
Sensor Systems for IoT, Mobile, and Wearable Devices
My research group has developed wearable wireless health monitoring (low-power SoC for ECG sensor node and nanowire biosensor ROIC for multiple cardiac biomarkers), energy-autonomous wireless sensor nodes (active wireless surface acoustic wave (SAW) temperature sensor node system and self-powered gas sensor node based on photovoltaic energy harvesting), system integration (ultrasound system for assessing hand hygiene compliance and smartphone-based multispectral imaging system), and heterogeneous metal oxide sensor array system.
Invasive and Implantable Sensing Devices
My research group has also developed invasive and implantable sensing devices. For example, implantable blood flow sensor microsystem with integrated nanowire sensors, SoC with asymmetric QPSK/OOK transceiver for wireless capsule endoscopy, and fully integrated SoC for multimodality intracranial neuromonitoring.
Neural Interfaces
My research group has demonstrated various microsystems and their applications for the neural interface. It highlights the advancements in wireless neural recording systems, peripheral nerve restoration, and stroke rehabilitation through innovative microsystem technologies and engineering approaches.
Surgical Navigation
We have also worked on developing systems for surgical navigation. It focuses on advancements in sensorized guidewires for minimally invasive surgery, smart navigation systems for orthopedic procedures, wireless electromagnetic sensors for surgical applications, and lesion localization systems for laparoscopic surgery, highlighting innovative approaches to enhance surgical precision and reduce dependency on conventional imaging methods.
Development of Other Components Through Collaboration
We collaborated very closely with other groups to develop components in microsystems. We have contributed to the design, fabrication, assembly, and packing of neuroprobe arrays. Also, we were involved in the development of coils for power transfer and miniaturized antennas for data communication.
2.5D and 3D Integration
My research group has verified the impact of stress by through-silicon-vias (TSVs), where we proposed the guard ring to isolate thermal coupling and resistor chain to locate open circuits. We also developed a on-silicon-interposer passive equalizer for next-generation high bandwidth memory (HBM).
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