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Talk by Prof. Sigurd Wagner

7 Junho 2016, 16:18 - Maria Lucília Gonçalves Abreu

Theme: Large-area electronic systems with a hybrid thin-film / CMOS circuit architecture

Speaker: Prof. Sigurd WagnerDepartment of Electrical Engineering and Princeton Institute for the Science and Technology of Materials, Princeton University, Princeton, NJ USA

When: Wednsday june 22th

Where: Instituto Superior Técnico, Qa1.1, 1º Piso, Torre Sul - campus Alameda

Hour: 11 a.m.


Many applications have been proposed for large-area electronics (LAE) beyond flat-panel displays and X-ray sensors. They include interactive walls, humanoid skin for robots, strainsensing for bridges, and countless others. However, no comprehensive, widely useable instructions are available for designing and building such systems. This lack is holding back the practical exploration of the many applications that LAE could find. In response, we are developing a versatile architecture for high-performance large-area systems. We combine thin-film electronics with CMOS integrated circuits, and our research program reaches from materials to system demonstrations. Many applications of LAE will be in sensing, hence employ a variety of materials and devices. Therefore we fabricate functionally separate subsystems on thin substrate sheets, and then laminate these to complete systems. To date we have made arrays for sensing strain, sound, light, and gestures. Much of our research on system architecture addresses the optimal distribution of functions between the large, but slow, thin-film domain and the small, but fast, CMOS ICs. Following an overview of the hardware of a typical system, I will describe examples of thin-film devices and circuits developed specifically for integration in the hybrid thin-film / CMOS architecture.

Sigurd Wagner received his Ph.D. from the University of Vienna, Vienna, Austria. Following a Post-Doctoral Fellowship at Ohio State University, he worked from 1970 to 1978 at the Bell Telephone Laboratories in Murray Hill and Holmdel, New Jersey, on semiconductor memories and heterojunction solar cells. He then joined the Solar Energy Research Institute (now NREL), in Golden, CO, as the founding Chief of the Photovoltaic Research Branch. Since 1980, he has been Professor of Electrical Engineering at Princeton University; in 2015 he became Professor Emeritus and Senior Scholar. He is co-inventor of several solar cells, and has been developing fundamentally new materials, processes, and components for flexible large-area electronics, electrotextiles, and electronic skin. He is considered the father of soft elastically stretchable electronics.