Nanowerk August 9, 2022
Skin-integrated electronics that directly interact with machines are transforming our ways of life toward the emerging trend of the metaverse. Researcher at UCLA have developed a stretchable, inexpensive, and waterproof magnetoelastic sensor array as a secondary skin for self-powered human–machine interaction. The sensor array has the giant magnetomechanical coupling layer made up of nanomagnets and a porous silicone rubber matrix, and the magnetic induction layer, which are coils patterned by liquid metal. With programmable functionalities the sensor array can supply different commands by producing bespoke electric signals from human finger touch with an optimal signal-to-noise ratio of 34 dB and a rapid response time of 0.2s. For practical application, the soft magnetoelastic sensor array can wirelessly turn on and off a household lamp and control a music speaker via Bluetooth continuously in real time, even with contact with high-humidity environments such as heavy perspiration. According to the researchers the work enables a wider variety of applications for wearable human–machine interaction…read more. Open Access TECHNICAL ARTICLEÂ
… a multifunctional magnetoelastic sensor array for touch sensing combining the effect of the magnetoelastic effect and electromagnetic induction for biomechanical-to-electrical conversion… Credit: Applied Physics Reviews 9, 031404 (2022)Â