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DTSTART;TZID=America/New_York:20221117T133000
DTEND;TZID=America/New_York:20221117T144000
DTSTAMP:20260429T031718
CREATED:20221109T220229Z
LAST-MODIFIED:20221109T220229Z
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SUMMARY:Distinguished Seminar - David Horsley
DESCRIPTION:“Systems Based on Ultrasonic MEMS: Commercialization and Future Directions “ \nDavid Horsley  \nProfessor\, University of California\, Davis Adjunct Professor\, University of California\, Berkeley  \n  \nAbstract \nThe increasing maturity of thin-film piezoelectric materials and the MEMS manufacturing ecosystem has enabled the rapid development of sensor systems based on piezoelectric micromachined ultrasonic transducers (PMUTs). In this talk\, I will describe work by my research group over the last decade to develop and commercialize PMUT-based systems for consumer electronics applications\, starting with air-coupled PMUTs used for time-of-flight (ToF) range-finding and human presence sensing. These ToF sensors were commercialized by my startup\, Chirp Microsystems (now part of TDK)\, and are used today in various products such as smart-locks\, robot vacuum cleaners\, and laptops. We subsequently developed an ultrasonic fingerprint sensor based on the monolithic integration of PMUTs with CMOS that is used for biometric authentication in consumer products today. A common feature of the ToF sensor and the fingerprint sensor is that they are systems that combine MEMS\, integrated circuits\, and algorithms. The ability to realize a complete ultrasonic system on chip (SoC) opens new research opportunities in areas such as portable medical imaging systems for point-of care ultrasound (POCUS) as well as wearable ultrasonic devices. \nBiography \nDavid A. Horsley received his PhD in Mechanical Engineering from the University of California\, Berkeley\, in 1998. He is a Professor of Mechanical and Aerospace Engineering at the University of California\, Davis\, and an Adjunct Professor of Mechanical Engineering at the University of California\, Berkeley\, where he is co-director of the Berkeley Sensor and Actuator Center (BSAC). He is also co-founder and CTO of Chirp Microsystems Inc. (a TDK Group Company)\, a manufacturer of ultrasonic sensors using MEMS technology. Dr. Horsley was Co-Chair of the 2016 IEEE Sensors Conference\, Co-Chair of the 2017 Transducers Research Foundation Napa Microsystems Workshop\, and Co-Chair of the 2020 IEEE MEMS Conference. Dr. Horsley is an IEEE Fellow\, a Fellow of the National Academy of Inventors\, is a recipient of the National Science Foundation’s CAREER Award\, the UC Davis Outstanding Junior Faculty Award\, the 2016 NSF I/UCRC Association’s Schwarzkopf Award for Technological Innovation\, and the 2018 East Bay Innovation Award. He has authored or co-authored over 200 scientific papers and holds over 30 patents.
URL:https://coe.northeastern.edu/event/distinguished-seminar-david-horsley/
LOCATION:136 ISEC\, 360 Huntington Ave\, 136 ISEC\, Boston\, MA\, 02115\, United States
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END:VEVENT
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DTSTART;TZID=America/New_York:20220629T120000
DTEND;TZID=America/New_York:20220629T143000
DTSTAMP:20260429T031718
CREATED:20220621T210230Z
LAST-MODIFIED:20220621T210230Z
UID:31679-1656504000-1656513000@coe.northeastern.edu
SUMMARY:CILS Seminar & Demo: Nanosurf Drive AFM
DESCRIPTION:Come learn about Nanosurf’s DriveAFM\, a tip-scanning atomic force microscope used for all areas of applications from materials to life science. \nAn instrument demonstration will follow in the CILS Core Facility in the ISEC basement\, 090 from 1:30-2:30pm. \nThe DriveAFM overcomes drawbacks of other tip-scanning instruments and provides atomic resolution together with fast scanning\, fast force spectroscopy\, and large scan sizes up to 100 µm. \n  \nTopic: CILS Seminar & Demo: Nanosurf DriveAFM\nTime: Jun 29\, 2022 12:00 PM Eastern Time (US and Canada) \nJoin Zoom Meeting\nhttps://northeastern.zoom.us/j/91205821278 \nMeeting ID: 912 0582 1278\nOne tap mobile\n+13017158592\,\,91205821278# US (Washington DC)\n+13126266799\,\,91205821278# US (Chicago) \nJoin by Skype for Business\nhttps://northeastern.zoom.us/skype/91205821278 \n 
URL:https://coe.northeastern.edu/event/cils-seminar-demo-nanosurf-drive-afm/
LOCATION:136 ISEC\, 360 Huntington Ave\, 136 ISEC\, Boston\, MA\, 02115\, United States
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20200220T120000
DTEND;TZID=America/New_York:20200220T130000
DTSTAMP:20260429T031718
CREATED:20200210T183743Z
LAST-MODIFIED:20200210T183743Z
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SUMMARY:Electrical and Computer Engineering Seminar: Dimitrios Skarlatos
DESCRIPTION:Location: ISEC 136 \nRethinking Operating System and Hardware Abstractions for Good and Evil \nAbstract: \nCurrent hardware and operating system abstractions were conceived at a time when we had minimal security threats\, scarce compute and memory resources and limited numbers of users. These assumptions are not true today. On one hand\, attacks such as Spectre and Meltdown have shown that current hardware is plagued by vulnerabilities. On the other hand\, new emerging cloud paradigms like microservices and serverless computing have led to the sharing of computing resources among hundreds of users at a time. In this new era of computing\, we can no longer afford to build each layer separately. Instead\, we have to rethink the synergy between the operating system and hardware from the ground up. \nIn this talk\, Skarlatos will focus on rethinking the virtual memory abstraction. First\, he will introduce Microarchitectural Replay Attacks\, a novel family of side-channel attacks that exploit existing virtual memory mechanisms. These attacks leverage the fact that\, in modern out-of-order processors\, a single dynamic instruction can be forced to execute many times. Then\, he will describe Elastic Cuckoo Page Tables\, his proposal to rebuild the virtual memory abstraction for parallelism. Finally\, he will conclude by describing ongoing and future directions towards redesigning the hardware and the operating system layers. \nBio:  \nDimitrios Skarlatos is a PhD student at the University of Illinois at Urbana-Champaign (UIUC)\, working with Professor Josep Torrellas.  His research lies at the intersection of computer architecture\, security\, and operating systems. He particularly enjoys questioning the fundamental assumptions behind computer design decisions. He builds practical solutions that improve the performance and bolster–or sometimes break–the security guarantees of computing systems. \nDimitrios is a UIUC College of Engineering Mavis Future Faculty Fellow. He is the recipient of the W. J. Poppelbaum Memorial Award\, the David J. Kuck Outstanding MS Thesis Award\, the UIUC Computer Science Excellence Fellowship\, a 2020 MICRO Top Picks in Computer Architecture\, and a 2019 MICRO Top Picks Honorable Mention. He was invited to participate in the Rising Stars in Computer Architecture workshop. He has earned an MS from UIUC and a BS in Electronic and Computer Engineering from the Technical University of Crete in Greece.
URL:https://coe.northeastern.edu/event/electrical-and-computer-engineering-seminar-dimitrios-skarlatos/
LOCATION:136 ISEC\, 360 Huntington Ave\, 136 ISEC\, Boston\, MA\, 02115\, United States
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DTSTART;TZID=America/New_York:20200213T150000
DTEND;TZID=America/New_York:20200213T160000
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CREATED:20200207T204815Z
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UID:19725-1581606000-1581609600@coe.northeastern.edu
SUMMARY:Electrical and Computer Engineering Seminar: Najme Ebrahimi
DESCRIPTION:Location: ISEC 136 \nNext Generation of Smart Wireless World: from High Data-Rate Mm-wave Directional Arrays to Reliable and Secured IoT Connectivity for 5G and Beyond \nAbstract: \nThe next generation of smart wireless world requires massive and reliable connectivity as well as high datarate communication and sensing. Consequently\, the immediate response of the wireless world is acquiring the mm-wave (MMW) wireless band (30 GHz–300 GHz) and the development of 5G and beyond. The major challenge of deploying high data-rate communication system at MMW frequency bands is the channel fading and multi-path diffraction effect. Hence\, multiple-element transceivers such as scalable “directional” phased array or massive MIMO are required. Moreover\, the next generation of wireless world is expected to have over one trillion Internet of Things (IoT) devices connected\, requiring secured connectivity such as protection against interference\, jammers\, and eavesdroppers  In this talk\, I will present novel techniques to overcome the challenges for future scalable high data-rate MMW transceiver array from silicon circuit toward RFIC system and packaging. This includes parasitic-insensitive\, power-efficient\, and wideband 2×2 arrays of injection-locked oscillators for efficient local oscillator (LO) distribution and phase shifting (circuit technique)\,  image selection Weaver architecture to significantly reduce the required bandwidth of the LO generation circuitry for the MMW system from conventional 20% to only 4% (RFIC architecture)\, and compact differential aperture coupled LO distribution feed network for compact and scalable antenna-IC integration (packaging). I will also discuss several future directions toward high-frequency signal generation and modulation based on integrating the circuit and electromagnetics fundamental theories for communication and sensing above 100 GHz\, namely\, as 6G.   On the other hand\, employing a “directional” antenna for interference/eavesdropper cancellation for IoTs suffers from side-lobe leakage and requires accurate beam alignment and localization. In this talk\, I will present a novel embedded architecture for a distributed IoT network that utilizes a masterslave full-duplex communication using an omnidirectional antenna to exchange a random modulated phase shift as the secret key while canceling out the eavesdropper effect. I will also discuss two future directions for interference cancellation from circuit level to system level; from cooperative and distributed pulse coupled synchronization for dynamically interference canceling towards wideband interference canceller/filter at RF front-end of IoT devices using a single antenna to turn the radio with one-bit ADC into reality \nBio: \nNajme Ebrahimi is a Post-Doctoral Research Fellow at the University of Michigan (U-M) since September 2017. At the University of Michigan\, she is mainly conducting research on both mm-Wave/THz high data rate communication and sensing in addition to the connectivity of the next generation of distributed Internet-of-Things network. She earned her PhD from the University of California\, San Diego (UCSD) in June 2017\, with a thesis emphasize on enabling high data rate and scalable mm-wave phased array for the next generation of smart wireless world. She received her MS degree and BS degree\, with highest honors\, from Amirkabir University of Technology\, Tehran\, Iran\, in 2011 and Shahid Beheshti University\, Tehran\, Iran\, in 2009\, respectively. She is a member of IEEE Solid-State Circuits and IEEE Microwave Theory and Techniques societies. She is the recipient of PhD Endowed Graduate Fellowship from UCSD (2012-2013) and U-M Departmental Postdoctoral Fellowship (20172019). She is currently serving as the vice-chair of IEEE Southeastern Michigan for Microwave Theory and Techniques Chapter where she is awarded MTT-s Travel Grant (2019). She is selected as 2019 EECS Rising Star by MIT launched Rising-star program and 2020 ISSCC Rising Star by IEEE Solid-State Circuits Society
URL:https://coe.northeastern.edu/event/electrical-and-computer-engineering-seminar-najme-ebrahimi/
LOCATION:136 ISEC\, 360 Huntington Ave\, 136 ISEC\, Boston\, MA\, 02115\, United States
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