Séminaire distingués

A sneak peek with light into opaque materials

Prof. Dr. Sylvain Gigan

Institute of Microengineering - Distinguished Lecture (Bonus Lecture)
Location will be confirmed.

Abstract: Complex heterogeneous materials, that scatter light in a highly complex way, present a huge challenge for imaging (think of seeing inside or through milk or in biological tissues). They are also a very interesting playground to study fundamental questions in wave physics. Very recently, we have shown that random light propagation in complex media can be leveraged for computational tasks. I will illustrate this concept through various examples, ranging from brain imaging to  optical computing (both classical and quantum). 

Bio: Sylvain Gigan is Professor of Physics at Sorbonne Université in Paris, and group leader in Laboratoire Kastler-Brossel, at Ecole Normale Supérieure (ENS, Paris). His research interests range from fundamental investigations of light propagation in complex media, biomedical imaging, sensing, signal processing,  to quantum optics and quantum information in complex media. He is also the cofounder of a spin-off:  LightOn (www.lighton.io) aiming at performing optical computing for machine learning and Big Data. 

This lecture is part of the IMT Distinguished Lecture Series. The lecture is considered as a bonus lecture for the class MICRO-626 (usual attendance requirement does not apply, but participation is highly encouraged).


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GaN for the Future

Prof. Dr. Debbie Senesky
Stanford University

Institute of Microengineering - Distinguished Lecture

Campus Lausanne SV 1717 (live)
Campus Microcity MC B0 302 (video)
Zoom Live Stream: https://epfl.zoom.us/j/165147980

Abstract: There has been a tremendous amount of research and industrial investment in gallium nitride (GaN) as it is positioned to replace silicon in the billion-dollar (USD) power electronics industry, as well as the post-Moore microelectronics universe. In addition, the 2014 Nobel Prize in physics was awarded for pioneering research in GaN that led to the realization of the energy-efficient blue light-emitting diode (LED). Furthermore, GaN electronics have operated at temperatures as high as 1000°C making it a viable platform for robust space-grade electronics and nano-satellites.  Even with these major technological breakthroughs, we have just begun the “GaN revolution.” New communities are adopting this platform for a multitude of emerging device applications including the following: sensing, energy harvesting, actuation, communication, and photonics.  In this talk, we will review and discuss the benefits of GaN’s two-dimensional electron gas (2DEG) over silicon’s p-n junction for these new and emerging applications.  In addition, we will discuss opportunities for transformational development of this semiconductor device platform (e.g., interface engineering, thermal metrology, selective-area doping) to realize future GaN-based electronic systems.
 
Bio: Debbie G. Senesky is an Assistant Professor at Stanford University in the Aeronautics and Astronautics Department and by courtesy, the Electrical Engineering Department. In addition, she is the Principal Investigator of the EXtreme Environment Microsystems Laboratory (XLab).  Her research interests include the development of micro- and nano-scale sensors, high-temperature wide bandgap (GaN, SiC) electronics, and robust interface materials for operation within extreme harsh environments.   She received the B.S. degree (2001) in mechanical engineering from the University of Southern California. She received the M.S. degree (2004) and Ph.D. degree (2007) in mechanical engineering from the University of California, Berkeley. In addition, she has held positions at GE Sensing (formerly known as NovaSensor), GE Global Research Center, and Hewlett Packard.  She has served on the program committee of the IEEE International Electron Devices Meeting (IEDM), International Conference on Solid-State Sensors, Actuators and Microsystems (Transducers), and International Symposium on Sensor Science (I3S).  She is currently co-editor for IEEE Electron Device Letters, Sensors (journal), and Micromachines (journal).   In recognition of her work, she is a recipient of the Emerging Leader Abie Award from AnitaB.org, NASA Early Faculty Career Award, and Alfred P. Sloan Foundation Ph.D. Fellowship Award. More information about Prof. Senesky can be found at xlab.stanford.edu or on Instagram/Twitter: @debbiesenesky.

Note: The Seminar Series is eligible for ECTS credits in the EDMI doctoral program.


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Flexible Radios and Flexible Networks

Prof. Dr. Alyssa B. Apsel,
Cornell University

Institute of Microengineering - Distinguished Lecture

Campus Lausanne SV 1717 (live)
Campus Microcity MC B0 302 (video)
Zoom Live Stream: https://epfl.zoom.us/j/637254875

Abstract: Over the past decades the world has become increasingly connected, with communications driving both markets and social movements.  Low power electronics, efficient communications, and better battery technology have all contributed to this revolution, but the cost and power required for these systems must be pushed further to make cheap, ubiquitous, seamless communication accessible to a wider community.   In this talk I will discuss two engineering approaches to this problem.  I will look at various approaches to drive the power down in radio networks that span across circuits and systems.  I will also look at creative biologically inspired approaches to enabling very low power networks and IoT.  Finally, I will discuss how by adding flexibility and building reconfigurable hardware, we can likewise build lower power and less costly consumer systems that can adapt across protocols and networks and work under changing device technologies.

Bio: Alyssa Apsel received the B.S. from Swarthmore College in 1995 and the Ph.D. from Johns Hopkins University, Baltimore, MD, in 2002.  She joined Cornell University in 2002, where she is currently Director of Electrical and Computer Engineering.  She was a Visiting Professor at Imperial College, London from 2016-2018.  The focus of her research is on power-aware mixed signal circuits and design for highly scaled CMOS and modern electronic systems.  Her current research is on the leading edge of ultra-low power and flexible RF interfaces for IoT.  She has authored or coauthored over 100 refereed publications including one book in related fields of RF mixed signal circuit design, ultra-low power radio, interconnect design and planning, photonic integration, and process invariant circuit design techniques resulting in ten patents.  She received best paper awards at ASYNC 2006 and IEEE SiRF 2012, had a MICRO “Top Picks” paper in 2006, received a college teaching award in 2007, received the National Science Foundation CAREER Award in 2004, and was selected by Technology Review Magazine as one of the Top Young Innovators in 2004.  She is a Distinguished Lecturer of IEEE CAS for 2018-2019, and has also served on the Board of Governors of IEEE CAS (2014-2016) and as an Associate Editor of various journals including IEEE Transactions on Circuits and Systems I and II, and Transactions on VLSI.  She has also served as the chair of the Analog and Signal Processing Technical committee of ISCAS 2011, is on the Senior Editorial Board of JETCAS, as Deputy Editor in Chief of Circuits and Systems Magazine, and as the co-founder and Chair of ISCAS Late Breaking News.  In 2016, Dr. Apsel co-founded AlphaWave IP Corporation, a multi-national Silicon IP provider focused on multi-standard analog Silicon IP solutions for the world of IOT.  As Chief Technology Officer of AlphaWave, Dr. Apsel led the company’s global research capability with offices in Silicon Valley, Toronto, and London. 

Note: The Seminar Series is eligible for ECTS credits in the EDMI doctoral program.


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Merging Humans and Machines with Hydrogel Technology

Prof. Dr. Xuanhe Zhao,
Massachusetts Institute of Technology MIT


Institute of Microengineering - Distinguished Lecture

Campus Lausanne SV 1717 (live)
Campus Microcity MC B0 302 (video)
Zoom Live Stream: https://epfl.zoom.us/j/385971995

Abstract: While human tissues and organs are mostly soft, wet and bioactive; machines are commonly hard, dry and biologically inert. Bridging human-machine interfaces is of imminent importance in addressing grand societal challenges in healthcare, security, sustainability, education and joy of living. However, interfacing human and machines is extremely challenging due to their fundamentally contradictory properties. At MIT SAMs Lab, we propose to harness “hydrogel technology” to form long-term, high-efficacy, compatible and seamless interfaces between humans and machines. On one side, hydrogels with similar mechanical and physiological properties as tissues and organs can naturally integrate with human body over the long term, greatly alleviating the foreign body response and mechanical mismatches. On the other side, the hydrogels with intrinsic or integrated electrodes, optical fibers, sensors, actuators and circuits can effectively bridge external machines and human bodies via electrical, optical, chemical and mechanical interactions. In this talk, I will first discuss the mechanisms to design extreme properties for hydrogels, including tough, resilient, adhesive, strong and antifatigue, for long-term robust human-machine interfaces.  Then I will discuss a set of novel hydrogel devices that interface with the human body, including i). hydrogel neural probes capable of electro-opto-fluidic interrogation of single neurons in mice over life time; ii). ingestible hydrogel pills capable of continuously monitoring core-body physiological conditions over a month;  and iii). untethered fast and forceful hydrogel robots controlled by magnetic fields for minimal invasive operations. I will conclude the talk by proposing a systematic approach to design next-generation human-machine interfaces based on hydrogel technology.

Bio: Xuanhe Zhao is an associate professor in mechanical engineering at MIT. His research group designs soft materials that possess unprecedented properties to address grant societal challenges. Dr. Zhao is the recipient of the early career award and young investigator award from National Science Foundation, Office of Naval Research, Society of Engineering Science, American Vacuum Society, Adhesion Society, Materials Today, Journal of Applied Mechanics, and Extreme Mechanics Letters. He held the Hunt Faculty Scholar at Duke, and the d'Arbeloff Career Development Chair and Noyce Career Development Professor at MIT. He was selected as a highly cited researcher by Web of Science in 2018.

Note: The Seminar Series is eligible for ECTS credits in the EDMI doctoral program.


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Dr. Silvano De Franceschi - IMT Distinguished Lecture

Dr. Silvano De Franceschi
CEA-INAC


Institute of Microengineering - Distinguished Lecture

Campus Lausanne SV 1717 (live)
Campus Microcity MC B0 302 (video)
Zoom Live Stream: https://epfl.zoom.us/j/982557518

Abstract and Bio to follow.

Note: The Seminar Series is eligible for ECTS credits in the EDMI doctoral program


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