New Frontiers on Nanotechnology: Nano-electrochemical Cells, Plasmonics, and Memristors
Dr. Wei Wu
Department of Electrical Engineering
University of Southern California
Date & Time
Friday, 17 May 2019
Room 7-37, Haking Wong Building, HKU
We have enjoyed the great successes of “Moore’s law” for more than half century. They have mainly been fueled by the semiconductor industry. Although the end of the roadmap may be getting closer, it is just the start of a new era when we will leverage the billions of dollars that have been invested in nanotechnologies (especially fabrication technologies) and the knowledge to make an even greater and broader impact on society. In my talk I will present three examples of the new frontiers: nano-electrochemical cells, plasmonics devices, and memristors. In nano-electrochemical cells, I will present electrochemical cells with the distance between electrodes less than the Debye length of the solution. The cells behave differently from conventional electrochemical cells, therefore they can be used both in energy storage and chemical sensing. In plasmonics, I will present a new technology to fabricate plasmonics structures with atomic precision, over large area, and with high reliability and repeatability. This technology is based on collapsible nanofingers. Based on this technology, we studied quantum tunneling in gap plasmon, and demonstrated label-free single molecule sensing with SERS. In memristor, I will present our recent discovery on engineering the characteristics of memristors using the crystallinity of the switching materials. Moreover, we also implemented analogue Kalman filter and control circuits based on our memristor devices.
Dr. Wei Wu is an associate Professor at the Ming Hsieh Department of Electrical Engineering, University of Southern California. He graduated from Peking University with a BS in Physics in 1996, and received a Ph.D. in Electrical Engineering from Princeton University in 2003. He joined USC in 2012. Before joining USC, he had worked as research associate, scientist and senior scientist at HP labs. He is an expert on nanofabrication and applications. His work includes nanoimprint lithography and applications in nano-electronics, nano-photonics, plasmonics, chemical sensing and nano-electrochemical cells. He coauthored 105 peer reviewed journal papers, 2 book chapters and more than 100 conference presentations, including 16 keynote and invited presentations. He has 115 issued U.S. patents. The nanoimprint machine that he invented has been successfully commercialized by EZImprinting Inc. He is the chair of Nanofabrication track, IEEE Nanotechnology Council. He is a co-editor of Applied Physics A and an associate editor of IEEE Transactions on Nanotechnology. He was also an IEEE Nanotechnology Council 2015 and 2016 distinguished lecturer.