Speaker: Chuan Wang, Postdoctoral Scholar, University of California, Berkeley, 2010-11 MHI Ph.D. Scholar
Abstract: In this talk, I will discuss the recent advancements in solution-based processing of high-purity semiconducting carbon nanotube networks, which has led to macro-scale fabrication of thin-film transistors (TFTs) with excellent yield, high performance, small device-to-device variation, and extreme bendability on mechanically flexible substrates. The superior mobility, room-temperature processing, and long term air-stability show the immense promise of the solution-processed carbon nanotubes as a competitive TFT technology platform for low-cost high-performance flexible electronics. A wide range of electronic components including digital logic circuits, radio-frequency transistors, and active-matrix backplane have been demonstrated using the carbon nanotube TFTs. Going further, I will present the heterogeneous integration of three distinct electronic components (TFTs, large-area sensor networks, and organic light-emitting diodes) on a single piece of skin-like substrate for a fully functional electronic system. The system functions as a user-interactive electronic skin (e-skin) that is capable of spatial and temporal mapping of a wide range of stimuli and provides instantaneous response through a seamlessly integrated AMOLED display. The enabled interactive e-skin represents a new class of smart macro-scale electronics which can be laminated on virtually any object while providing sophisticated human-surface interfacing at an unprecedented level. The presented platform could find a wide range of applications in robotics, interactive input devices, automotive control panels, smart wallpapers, and medical and health monitoring devices.