About Wedyan Babatain Wedyan Babatain Assistant Professor, Electrical and Computer Engineering sensors Actuators flexible electronics stretchable electronics wearables Human-Machine Interfaces microfabrication Professor Babatain’s research focuses on developing soft electronic interfaces through innovations in sensing, actuation, and additive manufacturing for wearable technologies, human-machine interfaces and reconfigurable electronics. Events Presented Events Jul 17 - Jul 23, 2022 Liquid Metal-Based Inertial Sensors for Motion Monitoring and Human Machine Interfaces Wedyan Babatain, Assistant Professor, Electrical and Computer Engineering Jul 19, 15:00 - 16:00 B2 B3 A0215 nanofabrication flexible electronics wearable devices sensors In this dissertation, the development of novel practical resistive and capacitive-type inertial sensors using liquid metal as a functional proof mass material is presented. Utilizing the unique electromechanical properties of liquid metal, the novel inertial sensor design confines a graphene-coated liquid metal droplet inside tubular and 3D architectures, enabling motion sensing in single and multiple directions. Combining the graphene-coated liquid metal droplet with printed sensing elements offers a robust fatigue-free alternative material for rigid, proof mass-based accelerometers. Resistive and capacitive sensing mechanisms were both developed, characterized, and evaluated. Emerging rapid fabrication technologies such as direct laser writing and 3D printing were mainly adopted, offering a scalable fabrication strategy independent of advanced microfabrication facilities. The developed inertial sensor was integrated with a programmable system on a chip (PSoC) to function as a stand-alone system and demonstrate its application for real-time- monitoring of human health/ physical activity and for soft human-machine interfaces. The developed inertial sensor architecture and materials in this work offer a new paradigm for manufacturing these widely used sensors that have the potential to complement the performance of their silicon counterparts and extend their applications.
Liquid Metal-Based Inertial Sensors for Motion Monitoring and Human Machine Interfaces Wedyan Babatain, Assistant Professor, Electrical and Computer Engineering Jul 19, 15:00 - 16:00 B2 B3 A0215 nanofabrication flexible electronics wearable devices sensors In this dissertation, the development of novel practical resistive and capacitive-type inertial sensors using liquid metal as a functional proof mass material is presented. Utilizing the unique electromechanical properties of liquid metal, the novel inertial sensor design confines a graphene-coated liquid metal droplet inside tubular and 3D architectures, enabling motion sensing in single and multiple directions. Combining the graphene-coated liquid metal droplet with printed sensing elements offers a robust fatigue-free alternative material for rigid, proof mass-based accelerometers. Resistive and capacitive sensing mechanisms were both developed, characterized, and evaluated. Emerging rapid fabrication technologies such as direct laser writing and 3D printing were mainly adopted, offering a scalable fabrication strategy independent of advanced microfabrication facilities. The developed inertial sensor was integrated with a programmable system on a chip (PSoC) to function as a stand-alone system and demonstrate its application for real-time- monitoring of human health/ physical activity and for soft human-machine interfaces. The developed inertial sensor architecture and materials in this work offer a new paradigm for manufacturing these widely used sensors that have the potential to complement the performance of their silicon counterparts and extend their applications.
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