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SUMMARY:RISE 2023
DESCRIPTION:  \nThis year’s RISE Expo will take place on the afternoon of Thursday\, April 13\, with live poster presentations in Matthews Arena from 1:30 PM – 4:30 PM ET. \nRISE is the showcase for research and creative projects being undertaken by everyone at Northeastern: learners from every year of study\, every major\, every campus\, as well as faculty and staff. Undergraduate and graduate students are invited to share work that will be presented live as a poster talk on RISE day\, while faculty and staff can share published work on a Faculty and Staff Works Table. \nRISE 2023 Timeline \n\nJanuary 23\, 2023: Abstract portal opens.\nFebruary 22\, 2023: Abstracts due.\nMarch 22\, 2023: Posters due. For those not in Boston\, we’ll also host posters in a virtual gallery where they can be shared across the global campus network.\nApril 12\, 2023: RISE Presenter special event.\nApril 13\, 2023: RISE Expo at Matthews Arena\, virtual gallery for those who cannot present in person.
URL:https://coe.northeastern.edu/event/rise-2023/
LOCATION:Matthews Arena\, 238-262 St Botolph St\, Boston\, MA\, 02115\, United States
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SUMMARY:Hussein Hussein’s PhD Dissertation Defense
DESCRIPTION:“Parametric Circuits for Enhanced Sensing and RF Signal Processing” \nCommittee Members: \nProf. Cristian Cassella (Advisor) \nProf. Marvin Onabajo \nProf. Matteo Rinaldi \nProf. Andrea Alù \nAbstract: \nMassive deployments of wireless sensor nodes (WSNs) that continuously detect physical\, biological or chemical parameters are needed to truly benefit from the unprecedented possibilities opened by the Internet‑of‑Things (IoT). Just recently\, new sensors with higher sensitivities have been demonstrated by leveraging advanced on‑chip designs and microfabrication processes. Yet\, WSNs using such sensors require energy to transmit the sensed information. Consequently\, they either contain batteries that need to be periodically replaced or energy harvesting circuits whose low efficiencies prevent a frequent and continuous sensing\, even impacting the maximum range of communication. Here\, we discuss a new battery-less and harvester-free remote sensing tag\, namely the subharmonic tag (SubHT)\, leveraging unique nonlinear characteristics to fundamentally break any previous paradigms for passive WSNs. SubHT can sense and transmit information without requiring supplied or harvested DC power. Also\, it transmits the sensed information at a difference frequency from the one of its interrogation signal\, rendering its reader immune from multi-path\, from clutter and from its own self‑interference. Also\, even though SubHT may not require any advanced and expensive manufacturing\, its unique nonlinear response enables extraordinary high sensitivities and dynamic ranges that can even surpass those achieved by the most advanced on-chip sensors. More interestingly\, SubHT can be even configured to operate in a “threshold sensing” mode\, making it able to respond to any interrogation signal only when the sensed parameter has exceeded a remotely reprogrammable threshold\, as well as to memorize any violation in a sensed parameter without requiring any memory components. In this talk\, the first SubHT prototypes for temperature sensing will be showcased. Even more\, we will show how including high quality factor (Q) resonators in a SubHT’s network allows to implement even more functionalities\, such as the long-range identification or tracking of any items or localization and navigation in a GPS denied environment. Yet\, the dynamics exploited by SubHT can also be leveraged to address various needs along radio-frequency (RF) chains. In this regard\, we show how the SubHT’s nonlinear dynamics can be leveraged to build components\, such as parametric filters\, frequency selective limiters and signal to noise enhancers\, that improve the stability of RF frequency synthesizers and instinctually suppress co-site or self-interferes\, paving an unprecedented path towards integrated radios with improved performance and longer battery-life time.
URL:https://coe.northeastern.edu/event/hussein-husseins-phd-dissertation-defense/
LOCATION:432 ISEC\, 360 Huntington Ave\, Boston\, MA\, 02115\, United States
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