Electrospun gelatin nanofiber based self-powered bio-e-skin for health care monitoring
RIS ID
113921
Abstract
Progress on smart self-powered electronic skin (e-skin) presents unique opportunities to detect and discriminate static human physiological signals and dynamic tactile stimuli. Nevertheless, development of piezoelectric materials possessing adequate flexibility, light weight, ease of large-area processing, low cost and environmental safety are attractive but remains a challenging choice for next-generation pressure/force sensors and mechanical energy harvesters. Here, we design a wearable bio-inspired piezoelectric pressure sensor (i.e., bio-e-skin) from structurally stable fish gelatin nanofibers (GNFs) using large area compatible electrospining technology. Owing to superior mechanosensitivity (~0.8 V kPa−1), the bio-e-skin can mimic spatiotemporal human perception and monitors real-time human physiological signals in non-invasive rational strategy. More importantly, nanoscale ferro– and piezo–electricity (d33~−20 pm/V) in GNFs, realized by piezoresponse force microscopy allow the bio-e-skin to be self-powered with excellent operational stability (over 108,000 cycles) and anti-fatigue (over 6 months) properties which solve the complication of external power supply for pressure sensing applications.
Publication Details
Ghosh, S. Kumar., Adhikary, P., Jana, S., Biswas, A., Sencadas, V., Gupta, S. Dutta., Tudu, B. & Mandal, D. (2017). Electrospun gelatin nanofiber based self-powered bio-e-skin for health care monitoring. Nano Energy, 36 166-175.