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Direct printing of wearable health sensors onto skin

Sep 15, 2020 (Nanowerk Spotlight) Skin-interfaced, wearable electronics have attracted significant attention due to their unique roles in preventative monitoring, diagnostic confirmation, and convenient therapeutic options. The ultimate application of these bio-integrated devices for practical and convenient applications hinges on the seamless integration of on-body sensors with wireless transmission modules. Multifunctional on-body sensors can precisely and continuously monitor the health conditions of the human body, whereas wireless transmission modules can wirelessly power up the sensors and transmit the data generated from them to the cloud for the healthcare professionals. As a promising direction toward this class of integrated systems, soft body area sensor networks include on-body sensors for physiological signal monitoring and flexible printed circuit boards (FPCBs) for signal conditioning/readout and wireless transmission. Realization of soft body area sensor networks currently relies on various sophisticated fabrication techniques ranging from lithography and transfer printing to direct printing, especially when
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