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X-ORIGINAL-URL:https://coe.northeastern.edu
X-WR-CALDESC:Events for Northeastern University College of Engineering
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DTSTART;TZID=America/New_York:20230818T100000
DTEND;TZID=America/New_York:20230818T110000
DTSTAMP:20260525T131035
CREATED:20230817T143431Z
LAST-MODIFIED:20230817T143431Z
UID:37897-1692352800-1692356400@coe.northeastern.edu
SUMMARY:Jaehyeon Ryu PhD Dissertation Defense
DESCRIPTION:Title: Materials Strategies for Scaling Soft Neuroelectrode Arrays \nLocation: Snell 012/Teams \nCommittee Members:\nProf. Hui Fang (Advisor)\nProf. Yongmin Liu\nProf. Ryan Koppes \nAbstract:\nThe evolution of electronics to seamlessly interface with biological tissue hinges on addressing multifaceted material constraints spanning electrochemical\, electrical\, and mechanical domains. Conventional bioelectronic interfaces\, while endowed with established electrochemical functionality\, remain hampered by rigidity that contradicts the pliability of surrounding tissue. While conductive materials exhibiting tissue-like softness and stretchability have been realized\, their potential for electrochemical probing of tissue is impeded by strain-induced performance degradation and an ill-suited integration with the irregular tissue interface. Nevertheless\, a significant challenge in ultrasoft bioelectronics pertains to scalability for achieving cellular resolution\, primarily due to mechanical disparities between conventional microelectronic materials and soft elastomer substrates. In this thesis\, by using a novel approach involving a multifunctional nanomesh\, composed of distinct purposefully designed layers including polymer for mechanical buffering\, metal for electrical conduction\, and low impedance coating for electrochemical interfacing in the same nanomeshed structure\, the resultant microelectrodes\, scalable down to 20μm at cellular resolution\, exhibit comparable performance to rigid devices alongside a stretchablity of approximately 50%\, with potential for future enhancement through in-plane structural optimizations. In addition\, we introduce a high-density neuroelectronic array featuring 256 filamentary neuroelectrodes on a flexible substrate. These electrodes are integrated with a single-transistor multiplexing acquisition circuit\, effectively reducing noise and footprint while potentially extending device lifetime. Remarkably\, the array’s rollable contact pad design allows for minimally invasive delivery through a syringe. Experimental validation demonstrates the array’s capability to record neural signals with high tone decoding accuracy. Utilizing high-density arrays of these microelectrode arrays\, this unique frame works holds significant promise for advancing the field of neural interfacing\, enabling a wide range of application from fundamental neuroscience studies to various biomedical applications.
URL:https://coe.northeastern.edu/event/jaehyeon-ryu-phd-dissertation-defense/
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DTSTART;TZID=America/New_York:20230818T110000
DTEND;TZID=America/New_York:20230818T140000
DTSTAMP:20260525T131035
CREATED:20230731T200732Z
LAST-MODIFIED:20230731T200732Z
UID:37673-1692356400-1692367200@coe.northeastern.edu
SUMMARY:Enabling Engineering Summer Showcase
DESCRIPTION:We invite you to the Enabling Engineering Summer Showcase on Friday – August 18th\, 11:00am – 2:00pm EST in 002 Ell Hall (360 Huntingtin Ave\, 002 Ell Hall\, Boston Massachusetts 02115) where students will present their final design projects. We will have our clients present including the director of nurses from Mass Brigham and the Mass Brigham Press. \nNU Enabling Engineering works to build devices for individuals with disabilities in Massachusetts and around the world. We maintain relationships with special education schools\, community organizations\, and individuals\, bring projects ideas to campus\, and then give students all the resources they need including funding\, lab space\, equipment\, and management and technical support. There’s also a technical elective that students can take for credit to complete projects. Over the past 10 years\, more than 1\,000 students from across the university have worked on >75 projects.  \nThe overall goal is to train the next generation of engineers\, clinicians\, and all students to be more knowledgeable about\, and aware of\, the needs of individuals with disabilities.
URL:https://coe.northeastern.edu/event/enabling-engineering-summer-showcase/
LOCATION:002 Ell Hall\, 360 Huntington Ave\, Boston\, MA\, 02115\, United States
ORGANIZER;CN="Enabling Engineering":MAILTO:enable@coe.neu.edu
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DTSTART;TZID=America/New_York:20230818T140000
DTEND;TZID=America/New_York:20230818T150000
DTSTAMP:20260525T131035
CREATED:20230817T143207Z
LAST-MODIFIED:20230817T143207Z
UID:37889-1692367200-1692370800@coe.northeastern.edu
SUMMARY:Haoling Li MS Thesis Defense
DESCRIPTION:Title: Ultracompact and Conformal Magnetodielectric Antennas \nCommittee Members:\nProf. Nian-Xiang Sun (Advisor)\nProf. Xufeng Zhang\nProf. Marvin Onabajo \nAbstract:\nNovel approaches are needed for improving antenna performance\, enhancing efficiency\, and reducing the size\, profile\, number\, and signature of antennas. Efficient conformal antennas are increasingly replacing traditional antennas across platforms such as ships\, aircraft\, and human interfaces. Magnetodielectric antennas made with high-hesistivity magnetic materials are getting more and more attention. Defined as the maximum magnetic conductivity\, hesitivity is directly related to the radiation efficiency of magnetodielectric antennas\, with a higher hesitivity corresponding to higher attainable efficiency. In this study\, new ultra-compact conformal magnetodielectric antennas are demonstrated\, employing commercially available ferrite ceramic substrates. Through rigorous simulation and fabrication\, a comprehensive comparison of our magnetodielectric antennas with reference monopole antennas demonstrated superior efficiency\, enhanced gain\, bandwidth\, and a substantial reduction in antenna size compared to monopole antennas. State-of-the-art hesitivity as high as 6×10^6 Ω/m has been reported in CoZrNb alloy films\, with an expectation of further 10× improvement in thin carrier substrates. This study forecasts the potential development of new magnetic materials with higher hesitivity\, leading to further advancements in magnetodielectric antennas with enhanced radiation efficiency and ground plane immunity.
URL:https://coe.northeastern.edu/event/haoling-li-ms-thesis-defense/
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20230818T143000
DTEND;TZID=America/New_York:20230818T153000
DTSTAMP:20260525T131035
CREATED:20230817T142938Z
LAST-MODIFIED:20230817T142938Z
UID:37895-1692369000-1692372600@coe.northeastern.edu
SUMMARY:Xu Yizhe MS Thesis Defense
DESCRIPTION:Title:\nIntegration of Polyimide Flexible PCB Wings in Northeastern’s Aerobat \nLocation:\nRoom: ISEC 532\, Teams link \nCommittee Members:\nProf. Alireza Ramezani(Advisor)\nProf. Rifat Sipahi \nAbstract:\nThe principal aim of this Master’s thesis is to propel the optimization of the membrane wing structure of the Northeastern Aerobat through origami techniques and enhancing its capacity for secure hovering within confined spaces. Bio-inspired drones offer distinctive capabilities that pave the way for innovative applications\, encompassing wildlife monitoring\, precision agriculture\, search and rescue operations\, as well as the augmentation of residential safety. The evolved noise-reduction mechanisms of birds and insects prove advantageous for drones utilized in tasks like surveillance and wildlife observation\, ensuring operation devoid of disturbances. Traditional flying drones equipped with rotary or fixed wings encounter notable constraints when navigating narrow pathways. While rotary and fixed-wing systems are conventionally harnessed for surveillance and reconnaissance\, the integration of onboard sensor suites within micro aerial vehicles (MAVs) has garnered interest in vigilantly monitoring hazardous scenarios in residential settings. Notwithstanding the agility and commendable fault tolerance exhibited by systems such as quadrotors in demanding conditions\, their inflexible body structures impede collision tolerance\, necessitating operational spaces free of collisions. Recent years have witnessed an upsurge in integrating soft and pliable materials into the design of such systems; however\, the pursuit of aerodynamic efficiency curtails the utilization of excessively flexible materials for rotor blades or propellers. This thesis introduces a guard design incorporating feedback-driven stabilizers\, enabling stable hovering flights within Northeastern’s Robotics-Inspired Study and Experimentation (RISE) cage.
URL:https://coe.northeastern.edu/event/xu-yizhe-ms-thesis-defense/
LOCATION:532 ISEC\, 360 Huntington Ave\, Boston\, MA\, 02115\, United States
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