Wearable gas sensors with wireless communication and RF energy harvesting capabilities

H. Cheng, J. Meeks
Penn State University,
United States

Keywords: deformable gas sensors, stretchable metal antennas, ambient RF energy harvesting, transient curvilinear sensors


Recent advances in electronics enable powerful biomedical devices that have significantly reduced therapeutic risks by monitoring vital signals and providing means of treatment. Small-footprint deformable gas sensors that can be deployed on the skin surface to detect and distinguish multiple compounds in real-time are integral to accurate monitoring of health conditions. Low-dimensional nanomaterials or mixed metal oxides are state-of-the-art gas sensing materials that change their resistance upon binding of various important gases that require monitoring. However, it is challenging to integrate within a microscale footprint the numerous nanomaterials required to deconvolute signals from complex gaseous mixtures, as is necessary for deployment. The core innovation will be our ability to use laser writing to synthesize and pattern numerous low-dimensional nanomaterials and mixed metal oxides directly on laser-induced graphene gas sensing platform in order to facilitate the deconvolution of complex gas responses in mixtures. When combined with the stretchable antennas for wireless communication and rectennas for ambient RF energy harvesting, wearable gas sensors for health monitoring or toxic gas detection open new opportunities in epidermal electronic devices to enhance the operator and mitigate exposure.