Prof. Jeong Ho CHO’s group (Organic Electronic Device Lab) at SAINT demonstrated all graphene–based transparent and conformable multifunctional E–skin matrix. The CVD–graphene was used as electrodes in the matrix, while graphene oxide (GO) and reduced graphene oxide (rGO) were adopted as sensing materials. A simple lamination process dexterously integrated humidity, temperature, and pressure sensors as a whole. Each sensor was sensitive to its relevant external stimulus, but not affected by the other two stimuli. Moreover, all the sensors can work simultaneously and indicate different stimulations individually. The distributions of the temperature, humidity, and pressure under figure pressing were represented in 2D color mapping. This work suggested a facile fabrication process combined with graphene derivatives to transparent and conformable E–skin application which overcome the conventional complex E–skin fabrication process. Additional sensors and wireless communication units could also be integrated through this simple lamination process, which would greatly help to realize interactive and remote health care in the future.
Utilization of various graphene derivatives as main components in E–skin could also open up a way to accelerate the industrialization of graphene. This work was published in Advanced Materials (2016).