Human Skin-Inspired Electrospun Patterned Robust Strain-Insensitive Pressure Sensors and Wearable Flexible Light-Emitting Diodes

Abstract

Wearable skin-inspired electronic skins present remarkable outgrowth in recent years because their promising comfort device integration, lightweight, and mechanically robust durable characteristics led to significant progresses in wearable sensors and optoelectronics. Wearable electronic devices demand real-time applicability and factors such as complex fabrication steps, manufacturing cost, and reliable and durable performances, severely limiting the utilization. Herein, we nominate a scalable solution-processable electrospun patterned candidate capable of forming ultralong mechanically robust nano–microdimensional fibers with higher uniformity. Nanofibrous patterned substrates present surface energy and silver nanoparticle crystallization shifts, contributing to strain-sensitive and -insensitive conductive electrodes (10 000 cycles of 50% strain). Synergistic robust stress releasing and durable electromechanical behavior engenders stretchable durable health sensors, strain-insensitive pressure sensors (sensitivity of ∼83 kPa–1 and 5000 durable cycles), robust alternating current electroluminescent displays, and flexible organic light-emitting diodes (20% improved luminescence and 300 flex endurance of 2 mm bend radius).

Dynamic competitive strains enabled self-supporting Janus nanostructured films for high-performance airflow perception

“…The large airflow impact caused the considerable separation of the graphene sheets and the carbon spheres at the edges owing to the dominant transverse strain, resulting in the sharp blockage of electron flow, which is similar to the sensing behavior of the ordinary resistive-type strain sensors. [27][28][29]…”

Recent Progress in Self-Healable Hydrogel-Based Electroluminescent Devices: A Comprehensive Review

“…Other nature-inspired materials for the applications of self-healing light-emitting diodes include human-skin-inspired electrospun electronic skins [ 47 ] and natural nano-clay-based [ 48 ] and cytoskeleton-inspired hydrogels [ 49 ]. At the rear end, when such kinds of resistance are not garneted, cracks can occur, which reduces the electrical characteristics of the materials that are the main components of LEDs.…”

Direct Writing of Silver Nanowire Patterns with Line Width down to 50 μm and Ultrahigh Conductivity

“…Electrically conductive electrodes are indispensable for all types of electronic devices, ranging from interconnects to passive elements to functional and integrated devices, − and thus the deposition of conductive materials into elaborate patterns via DIW is fundamental yet crucial. In terms of raw materials, metals are more favorable for DIW than carbon-based materials or conducting polymers due to their intrinsically high conductivity and lower cost .…”