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a) Photograph of a graphene‐based touch screen mobile phone (left) in comparison with an ITO‐based touch screen phone (right).Reproduced with permission.150 Copyright 2014, American Chemical Society. b) Sketch map of touch panels. Reproduced with permission.154 c) A schematic of paper based multitouch screen. d) Optical transmittance of the whole device. e) Measurement of linearity of paper touch screen. c–e) Reproduced with permission.155 Copyright 2016, American Chemical Society.
