SEMINAR:Computing with Nano-Crossbar Arrays

Speaker: Mustafa Altun

Title:Computing with Nano-Crossbar Arrays

Date/Time:  3 November  2021 / 13:40 - 14:30 PM

Zoom: Meeting ID:https://sabanciuniv.zoom.us/j/4945350538

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Abstract:  We, as Emerging Circuits and Computation (ECC) Group at ITU, aim to develop new computing paradigms as well as circuit design and electronic design automation (EDA) techniques especially for future and emerging technologies. We have worked on different topics including array based computing, stochastic/approximate computing, and reversible computing. This talk is mainly about array based computing. Different computing models including diode, memristor, FET, and four-terminal switch based models, within different technologies including carbon nanotubes, nanowires, and memristors as well as the CMOS technology have been discussed. Their capabilities to realize logic functions and to tolerate faults have been deeply analyzed. From these experiences, we think that instead of replacing CMOS with a completely new crossbar based technology, developing CMOS compatible crossbar technologies and computing models is a more viable solution to overcome challenges in CMOS miniaturization. At this point, four-terminal switch based arrays, called switching lattices, come forward with their CMOS compatibility feature as well as with their area efficient device and circuit realizations. We have showed that switching lattices can be efficiently implemented using a standard CMOS process to implement logic functions by doing experiments in a 65nm CMOS process. Also we discuss challenges and promises in realizing switching lattices for under 30 nm CMOS technologies including FinFET, gate all around and 3D technologies.

Bio:Mustafa Altun received his BSc and MSc degrees in electronics engineering at Istanbul Technical University in 2004 and 2007, respectively. He received his PhD degree in electrical engineering with a PhD minor in mathematics at the University of Minnesota in 2012. Since 2012, he has served as a faculty member of electrical engineering at Istanbul Technical University. Dr. Altun runs the Emerging Circuits and Computation (ECC) Group in the same university. Dr. Altun has been served as a principal investigator of various projects including EU H2020 RISE, National Science Foundation of USA (NSF), and various TUBITAK projects. He is an author of more than 50 peer reviewed papers, 5 patents, and 2 book chapters, and the recipient of the Science Academy Young Scientist, TUBITAK Success, TUBITAK Career, and Werner von Siemens Excellence awards.