A newly-discovered electronic โtattooโ or patch that can bend, wrinkle and stretch with the skin holds real promise for health care applications, according to a paper published in a recent edition of the journal Science, Researchers tell how they designed the ultra-thin, skin-like electronic patch with components for sensing, medical diagnostics, communications and human-machine interfaces.
Patches are mounted on a thin sheet of water-soluble plastic, and then laminated to the skin with water. The technology offers possibilities that range from monitoring neurological diseases to tracking muscle movements.
โWe threw everything in our bag of tricks onto that platform, and then added a few other new ideas on top of those, to show that we could make it work,โ stated lead researcher John A. Rogers, PhD, professor of engineering at the University of Illinois (UI), in a press release.
โWe think this could be an important conceptual advance in wearable electronics, to achieve something that is almost unnoticeable to the wearer,โ stated co-leader Todd Coleman, PhD, an electrical and computer-engineering professor at UI. โThe technology can connect you to the physical world and the cyberworld in a very natural way that feels very comfortable.โ
Using EEG and EMG sensors, the patches could be used to monitor nerve and muscle activity, and they donโt require conductive gel, tape, skin-penetrating pins or bulky wires, according to the researchers. Because theyโre less cumbersome than current monitoring devices, the technology may allow researchers to better study patient signals in natural settings.
โIf we want to understand brain function in a natural environment, thatโs completely incompatible with EEG studies in the laboratory,โ stated Coleman. โThe best way to do that is to record neural signals in natural settings, with devices that are invisible to the user.โ
Rogers collaborated on the project with Northwestern University engineering professor Yonggang Huang and researchers to develop the device geometryโtheyโve dubbed its shape โfilamentary serpentineโโto create tiny circuits used in the patches.
โThe blurring of electronics and biology is really the key point here,โ Huang stated. โAll established forms of electronics are hard, rigid. Biology is soft, elastic. Itโs two different worlds. This is a way to truly integrate them.โ
Researchers are next working to develop systems with the technology and add wi-fi capabilitiy.
โThe vision is to exploit these concepts in systems that have self-contained, integrated functionality, perhaps ultimately working in a therapeutic fashion with closed feedback-control based on integrated sensors, in a coordinated manner with the body itself,โ Rogers stated.
[Source: University of Illinois]