MIT engineers have designed what may be the Band-Aid of the future: a sticky, stretchy, gel-like material that can incorporate temperature sensors, LED lights, and other electronics, as well as tiny, drug-delivering reservoirs and channels. The “smart wound dressing” releases medicine in response to changes in skin temperature and can be designed to light up if, say, medicine is running low.
When the dressing is applied to a highly flexible area, such as the elbow or knee, it stretches with the body, keeping the embedded electronics functional and intact.
The key to the design is a hydrogel matrix designed by Xuanhe Zhao, the Robert N. Noyce Career Development Associate Professor in MIT’s Department of Mechanical Engineering. The hydrogel, which Zhao detailed earlier this month, is a rubbery material, mostly composed of water, designed to bond strongly to surfaces such as gold, titanium, aluminum, silicon, glass, and ceramic.
In a new paper published in the journal Advanced Materials, the team reports embedding various electronics within the hydrogel, such as conductive wires, semiconductor chips, LED lights, and temperature sensors. Zhao says electronics coated in hydrogel may be used not just on the surface of the skin but also inside the body, for example as implanted, biocompatible glucose sensors, or even soft, compliant neural probes.
“Electronics are usually hard and dry, but the human body is soft and wet. These two systems have drastically different properties,” Zhao says. “If you want to put electronics in close contact with the human body for applications such as health care monitoring and drug delivery, it is highly desirable to make the electronic devices soft and stretchable to fit the environment of the human body. That’s the motivation for stretchable hydrogel electronics.”
Zhao’s co-authors on the paper are graduate students Shaoting Lin, Hyunwoo Yuk, German Alberto Parada, postdoc Teng Zhang, Hyunwoo Koo from Samsung Display, and Cunjiang Yu from the University of Houston.
Suggested Items
Advocacy: There’s No Time to Waste
05/21/2024 | Marcy LaRont, PCB007 MagazineIn the late 1990s, I worked for a PCB company ardently working to build manufacturing presences in Malaysia, Taiwan, and eventually China’s mainland. For some of us who had the resources, we followed our OEM customers offshore as they began demanding increasingly greater price concessions from their stateside suppliers. The government was not coming to the rescue of the PCB manufacturer, so we rode the changing economic tide as it turned unwaveringly toward globalism and cheaper labor.
GPV Holds Site Engagement Meeting in Estonia
05/21/2024 | GPVGPV’s Executive Leadership Team met with the local management teams from our Operating Business Units (OBUs) located in best-cost Europe, Mexico and Austria for the third and final Site Engagement Meeting (SEM) this year.
Kimball Electronics Tampa Celebrated the Diversity of their Workforce with a Diversifest Taste of Cultures Event
05/21/2024 | Kimball ElectronicsKimball Electronics Tampa employees representing over 15 countries set up booths that demonstrated their culture and customs, including clothing, food, music and general facts.
Kimball Electronics Romania Volunteers Deliver Hope and Aid to Remote Mountain Communities
05/20/2024 | Kimball Electronics Inc.A significant portion of the Kimball Electronics Romania leadership team, along with employees and their children, participated in a two-day service project in remote mountain villages within a nearby county.
Danutek Celebrates 20 Anniversary
05/20/2024 | DanutekDanutek, a leading supplier of capital equipment and service support to the electronics manufacturing sector in Europe, proudly marks its 20th anniversary this year.