Contactless interactive displays respond to finger movements and breath via humidity sensing

Nanowerk  April 27, 2024
Researchers in China developed a contactless user-interactive sensing display (CUISD) based on dynamic alternating current electroluminescence (ACEL) that responds to humidity. Sub second humidity-induced luminescence was achieved by integrating a highly responsive hydrogel into the ACEL layer. The patterned silver nanofiber electrode and luminescence layer, produced through electrospinning and microfabrication, resulted in a stretchable, large-scale, high-resolution, multicolor, and dynamic CUISD. It was implemented for the real-time control of a remote-controlled car, wherein the luminescence signals induced by touchless finger movements were distinguished and encoded to deliver specific commands. The distinctive recognition of breathing facilitates the CUISD served as a visual signal transmitter for information interaction, which is beneficial for individuals with disabilities. Their work may reshape the way authors interact with each other and devices, discovering niche applications in virtual/augmented reality and the metaverse… read more. TECHNICAL ARTICLE