(Yicai Global) Aug. 7 – Prof. Ren Tianling with the Department of Microelectronics and Nanoelectronics at Beijing’s prestigious Tsinghua University and his team recently researched and developed a biomedical sensor -- a multilayer graphene epidermal electronic skin -- which can detect physiological signals such as breathing and heart rate.
Their study appeared recently in the world-famous journal in the field of nanophysics ACS Nano, state-run Xinhua News Agency reported.
The ultrahigh sensitivity e-skin has potential applications in motion and sleep monitoring and in biomedicine.
The e-skin uses resistance variation to detect minor deformations on the skin’s surface, and measures breathing, heartbeat and voice after being attached to the mask, wrist and throat, in addition to detecting other signals, Ren said.
A signal success in the device’s invention was in creating a brand-new process known as ‘wet stripping’ of graphene oxide, where the oxide is lifted from a graphene surface, boosting the device’s sensitivity and ability to withstand higher temperatures, Ren explained.
“Remarkable electroconductibility and flexibility make graphene an ideal material for electronic skin, but how to stick the graphene on the surface of the skin in a more comfortable, stable and reliable way to collect various physiological signals of the human body is as a major and pressing issue,” Ren noted.
Editor: Ben Armour