Wearable devices get signal boost from innovative material

A new material that moves like skin while preserving signal strength in electronics could enable the development of next-generation wearable devices with continuous, consistent wireless and battery-free functionality., an international team of researchers from Rice University and Hanyang University developed the material by embedding clusters of highly dielectric ceramic nanoparticles into an elastic polymer.

"If you have ever been in a place with poor cellular reception or a very spotty Wi-Fi signal, you probably understand the frustration of weak signals," Avila said."When we're trying to communicate information, we work at specific frequencies: Two antennas communicating with each other do so at a given frequency. So we need to ensure that that frequency does not change so that communication remains stable.

Sun Hong Kim, a former research associate from Hanyang and now a postdoctoral researcher at Northwestern University, pointed out that the research team took a creative approach to solving the problem of RF signal stability in stretchable electronics. Wearable technologies are having a profound impact on health care, enabling new forms of individual monitoring, diagnosis and care. Smart wear market predictions reflect the transformative potential of these technologies with health and fitness owning the largest share in terms of end use.

"When we put the electronics on the substrate and then we stretch or bend it, we see that the resonant frequency of our system remains stable," Avila said."We showed that our system supports stable wireless communication at a distance of up to 30 meters even under strain. With a standard substrate, the system completely loses connectivity."

"Skin-interfaced stretchable RF devices that can seamlessly conform to skin morphology and monitor key physiological signals require critical design of the individual material layouts and the electronic components to yield mechanical and electrical properties and performance that do not disrupt a user's experience," Avila said.

Source: Tech Daily Report (techdailyreport.net)

Technology Wearable Technology Materials Science Mobile Computing Spintronics Research Wifi Artificial Intelligence

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