Semiconductor nanowires are a platform for the development of nano-enabled devices. The operating principles of 1-D devices may deviate from conventional models, so nanoscale probes of their electrical properties are needed to explore new behaviors and validate new device models. Northwestern researchers have used photocurrent imaging to determine the local electrostatic potential in nanowire transistors under a range of operating conditions. A quantitative elucidation of the operational principles establishes a more fundamental understanding and promotes optimization of nanomaterials-based devices.
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