Laser-patterned multifunctional sensor array with graphene nanosheets as a smart biomonitoring fashion accessory

• DOI: 10.48550/arxiv.2104.01615
• Publication Date: 2021-01-01
• Authors: Vijay Shirhatti; Suresh Nuthalapati; Vaishakh Kedambai...; Saurabh Kumar; Mangalore Manjuna...; K. Rajanna
• Keywords: FOS: Electrical engineering, electronic engineering, information engineering; FOS: Physical sciences; Physics - Applied Physics; 02 engineering and technology; Applied Physics (physics.app-ph); Systems and Control (eess.SY); 0210 nano-technology; Electrical Engineering and Systems Science - Systems and Control

Biomonitoring wearable sensors based on two-dimensional nanomaterials have lately elicited keen research interest and potential for a new range of flexible nanoelectronic devices. Practical nanomaterial-based devices suited real-world service, which first-rate performance while being an attractive accessory, are still distant. We report multifunctional sensor fabricated using ultra-thin percolative layer microwave exfoliated graphene nanosheets laser-patterned gold circular inter-digitated electrodes monitoring vital human physiological parameters. This Graphene Laser-patterned Electrodes (GLE) displays ultra-high strain resolution 0.024% record gauge factor 6.3e7 exceptional stability repeatability in its operating range. The was subjected to biomonitoring experiments like measurement heart rate, breathing body temperature, hydration level, health parameters, especially considering the current pandemic scenario. also served applications such as pedometer, limb movement tracking, control switch interaction. innovative laser-etch process used pattern thin-film shapes, with incognizable layer, provides technique integrating multiple fashion accessory. reported work marks giant leap from conventional banal highly marketable array