title: User-interactive electronic skin for instantaneous pressure visualization.
abstract: Electronic skin (e-skin) presents a network of mechanically flexible sensors that can conformally wrap irregular surfaces and spatially map and quantify various stimuli. Previous works on e-skin have focused on the optimization of pressure sensors interfaced with an electronic readout, whereas user interfaces based on a human-readable output were not explored. Here, we report the first user-interactive e-skin that not only spatially maps the applied pressure but also provides an instantaneous visual response through a built-in active-matrix organic light-emitting diode display with red, green and blue pixels. In this system, organic light-emitting diodes (OLEDs) are turned on locally where the surface is touched, and the intensity of the emitted light quantifies the magnitude of the applied pressure. This work represents a system-on-plastic demonstration where three distinct electronic components--thin-film transistor, pressure sensor and OLED arrays--are monolithically integrated over large areas on a single plastic substrate. The reported e-skin may find a wide range of applications in interactive input/control devices, smart wallpapers, robotics and medical/health monitoring devices.
authors.affiliation: 1] Department of Electrical Engineering and Computer Sciences, University of California, Berkeley, California 94720, USA [2] Berkeley Sensor and Actuator Center, University of California, Berkeley, California 94720, USA [3] Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA [4].
authors.forename: Chuan
authors.initials: C
authors.lastname: Wang
authors.forename: David
authors.initials: D
authors.lastname: Hwang
authors.forename: Zhibin
authors.initials: Z
authors.lastname: Yu
authors.forename: Kuniharu
authors.initials: K
authors.lastname: Takei
authors.forename: Junwoo
authors.initials: J
authors.lastname: Park
authors.forename: Teresa
authors.initials: T
authors.lastname: Chen
authors.forename: Biwu
authors.initials: B
authors.lastname: Ma
authors.forename: Ali
authors.initials: A
authors.lastname: Javey