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X-WR-CALDESC:Events for The Advanced Science Research Center
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DTSTART;TZID=America/New_York:20250314T110000
DTEND;TZID=America/New_York:20250314T120000
DTSTAMP:20260811T094635
CREATED:20241104T203839Z
LAST-MODIFIED:20250205T161347Z
UID:10001306-1741950000-1741953600@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Giuseppe Strangi
DESCRIPTION:Dr. Giuseppe Strangi (Case Western Reserve University) \nThin-Film Photonics: Enabling Fano Resonances and Optomechanics\nAbstract – In recent years\, significant interest has emerged in the inverse design1 of artificial layered heterostructures for photonic applications2. Specifically\, the unique optical properties of near-zero permittivity (ENZ) metamaterials have enabled the exploration of novel physical effects and mechanisms. In this presentation\, I will delve into how thin film photonics harnesses the potential of Fano resonances3-4 and extreme optomechanics5. By layering metal-dielectric thin films\, we can create a distinct type of optical coating that exhibits photonic Fano resonance\, referred to as a Fano-resonant optical coating (FROC). We extend the concept of coupled mechanical oscillators to thin-film nanocavities\, shedding light on semi-transparent FROCs that can both transmit and reflect the same color\, akin to a beam splitter filter. This remarkable property is beyond the capabilities of conventional optical coatings. In the latter part of my presentation\, I will discuss recent theoretical and experimental efforts aimed at exploring optomechanics based on epsilon-near-zero materials5. \n \n[1] Lininger\, A.\, Hinczewski\, M.\, & Strangi\, G. “General Inverse Design of Layered Thin-Film Materials with Convolutional Neural Networks”. ACS PHOTONICS\, 8(12)\, 3641-3650 (2021)\n[2] K. V. Sreekanth\, Y. Alapan\, M. ElKabbash\, U. A. Gurkan\, E. Ilker\, M. Hinczevski\, A. De Luca and G. Strangi NATURE MATERIALS 15\, 4 4609 (2016)\n[3] ElKabbash\, M.; Letsou\, T.; Jalil\, S. A; Hoffman; Lininger\, A. R; Fann\, C.; Hinczewski\, M.; Strangi\, G. and Chunlei\, G.; “Fano-resonant ultrathin film optical coatings” NATURE NANOTECHNOLOGY\, 16\, 4\, 440-446 (2021)\n[4] ElKabbash\, Mohamed; Hoffman\, Nathaniel; Lininger\, Andrew R; Jalil\, Sohail A; Letsou\, Theodore; Hinczewski\, Michael; Strangi\, Giuseppe; Guo\, Chunlei; “Fano resonant optical coatings platform for full gamut and high purity structural colors” NATURE COMMUNICATIONS\, 14\, 1 3960 (2023).\n[5] Kiasat\, Y.\, Donato\, M.G.\, Hinczewski\, M. Elkabbash\, M.\, Letsou\, T.\, Sajia R.\, Marago’ O.M.\, Strangi\, G.\, & Engheta\, N. Epsilon-near-zero (ENZ)-based optomechanics. COMMUNICATION PHYSICS 6\, 69 (2023) \nBio – Dr. Giuseppe Strangi is Professor of Physics at Case Western Reserve University and holds an Endowed Chair position as Ohio Research Scholar on Surfaces in Advanced Materials. He is affiliated with IAM – Institute for Advanced Materials at CWRU and with CNR – National Research Council\, Italy.\nhttps://nanoplasmlab.com/ \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 860 8907 5271 Passcode 046161
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-giuseppe-strangi/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250319T113000
DTEND;TZID=America/New_York:20250319T130000
DTSTAMP:20260811T094635
CREATED:20250218T190329Z
LAST-MODIFIED:20250314T192342Z
UID:10001474-1742383800-1742389200@asrc.gc.cuny.edu
SUMMARY:Seminar in Biochemistry\, Biophysics\, and Biodesign: John McGeehan\, Principal Scientist of Biochemical Engineering
DESCRIPTION:Following the discovery in a Japanese recycling \nfacility of a bacterium capable of breaking down the man-made \nplastic polyethylene terephthalate (PET)\, we turned our attention \ntowards uncovering the detailed workings of enzymes that can \nperform this remarkable reaction. Found in single-use drinks bottles\, \npackaging\, and clothing\, PET can take centuries to decompose and is \naccumulating in our environment at a staggering rate. Enzymes that \ncan digest PET\, and other highly polluting plastics\, into their original \nmonomer building blocks provides routes towards circular plastic \nrecycling. Working across broad scientific areas\, from microbiology \nfield studies searching for novel plastic-digesting bacteria\, through \nto biochemistry and structural biology combined with artificial \nintelligence\, we are engineering improved enzymes and accelerating \ntechnologies to help tackle our plastics crisis. John will provide an \nintroduction to this growing field and updates on the latest \ndevelopments from the NREL research team.
URL:https://asrc.gc.cuny.edu/event/seminar-in-biochemistry-biophysics-and-biodesign-john-mcgeehan-principal-scientist-of-biochemical-engineering/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Structural Biology
ATTACH;FMTTYPE=application/pdf:https://asrc.gc.cuny.edu/wp-content/uploads/media/event/seminar-in-biochemistry-biophysics-and-biodesign-john-mcgeehan-principal-scientist-of-biochemical-engineering/20250319_mcgeehan_flyer.pdf
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250320T140000
DTEND;TZID=America/New_York:20250320T153000
DTSTAMP:20260811T094635
CREATED:20250310T134835Z
LAST-MODIFIED:20250310T173000Z
UID:10001479-1742479200-1742484600@asrc.gc.cuny.edu
SUMMARY:Guest Speaker: Steve Eichhorn\, PhD
DESCRIPTION:Using Cellulose to Store and Harvest Energy\nAbstract: This talk will cover the use of cellulosic materials for the harvesting and storage of energy. The talk will cover the history of cellulosic materials used in both batteries and capacitors\, introducing the use of nanocellulose\, and carbon materials derived from this material for use as electrodes and also as the separators in batteries. Work carried out on supercapacitors will also be discussed\, and how things are progressing with the use of biomass for capacitive deionisation devices. Finally\, some very recent work on the combination of graphene and cellulose for the production of triboelectric nanogenerators will be introduced and discussed\, showing how it might be possible to have an all-cellulose/polymer device\, and potentially place such devices on clothing and other structures for the generation and storage of power. \nBio: Steve Eichhorn graduated with a bachelor’s degree in physics from the University of Leeds in 1993. He then went on to do a Master’s degree and PhD (1995-1998) at the University of Manchester Institute of Science and Technology (UMIST) in the Paper Science Department. Following that he carried out postdoctoral research under the supervision of Professor Bob Young FRS in the Department of Materials Science and Engineering (1999-2002). He was hired as a new lecturer in 2002 in the Materials Science department\, which then became the School of Materials in 2004 when UMIST merged with the Victoria University of Manchester. He was promoted to Senior Lecturer and Reader and then went to become Chair of Materials Science at the University of Exeter in 2011. At Exeter he built an activity around sustainable materials research\, and also took on leadership roles as a co-Director of an EPSRC funded doctoral training centre and he was the Head of Engineering (from 2014-2017). In September 2017 he moved to the University of Bristol and into the newly formed Bristol Composites Institute\, and was interim Head of School (for the CAME School of Engineering) in 2020. He has been awarded the Rosenhain Medal and Prize in 2012 from the Institute of Materials\, Minerals & Mining (IOM3) for his contributions to Materials Science\, the Hayashi Jisuke prize from the Japanese Cellulose Society (in 2017)\, the Swinburne Medal and Prize (IOM3) in 2020\, and was the Chair of the ACS’s Cellulose and Renewable Materials Division. He was also made a Fellow of the Division in the same year. In 2021 he was awarded an EPSRC ED&I fellowship on Biobased Composites. The ED&I programme of work has a specific emphasis on Black and Black heritage staff and students. \n 
URL:https://asrc.gc.cuny.edu/event/guest-speaker-steve-eichhorn/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Nanoscience
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250326T113000
DTEND;TZID=America/New_York:20250326T130000
DTSTAMP:20260811T094635
CREATED:20250218T190511Z
LAST-MODIFIED:20250218T214213Z
UID:10001475-1742988600-1742994000@asrc.gc.cuny.edu
SUMMARY:Seminar in Biochemistry\, Biophysics\, and Biodesign: Kim Orth\, Professor of Molecular Biology and Biochemistry
DESCRIPTION:
URL:https://asrc.gc.cuny.edu/event/seminar-in-biochemistry-biophysics-and-biodesign-kim-orth-professor-of-molecular-biology-and-biochemistry/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Structural Biology
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250326T120000
DTEND;TZID=America/New_York:20250326T130000
DTSTAMP:20260811T094635
CREATED:20250325T183427Z
LAST-MODIFIED:20250325T183427Z
UID:10001482-1742990400-1742994000@asrc.gc.cuny.edu
SUMMARY:Seminar in Biochemistry\, Biophysics\, and Biodesign\, featuring Professor Kim Orth
DESCRIPTION:My lab is interested in elucidating the activity of virulence factors from pathogenic bacteria so that we can gain novel molecular insight into eukaryotic signaling systems. One of these factors encodes a Fic domain that exhibits diverse metazoans the Fic domain is used for AMPylation to maintain homeostasis in cells when under stress. Recently\, we developed a pre-clinical model of dysregulated FicD AMPylation that causes infant onset diabetes. \n  \nPlease use this link to access Zoom.
URL:https://asrc.gc.cuny.edu/event/seminar-in-biochemistry-biophysics-and-biodesign-featuring-professor-kim-orth/
LOCATION:Advanced Science Research Center (ASRC)\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Structural Biology
ATTACH;FMTTYPE=application/pdf:https://asrc.gc.cuny.edu/wp-content/uploads/media/event/seminar-in-biochemistry-biophysics-and-biodesign-featuring-professor-kim-orth/Orth-Flyer.pdf
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250327T133000
DTEND;TZID=America/New_York:20250327T150000
DTSTAMP:20260811T094635
CREATED:20250321T221017Z
LAST-MODIFIED:20250321T221017Z
UID:10001481-1743082200-1743087600@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Jacob Khurgin
DESCRIPTION:Dr. Jacob Khurgin (Johns Hopkins University) \nCoherent Frequency Combs in Mid-Infrared and THz Produced By Self Frequency Modulated Quantum Cascade Lasers\nFor many applications Optical Frequency Combs (OFCs) require a high degree of temporal coherence and thus narrow linewidth1 as well as wide bandwidth (i.e. many spectral lines.  Commonly OFCs are generated in some nonlinear media from a monochromatic narrow linewidth laser sources or from a mode-locked laser pulses but in the all-important mid-infrared (MIR) and terahertz (THz) regions of spectrum OFCs can be generated intrinsically (i.e. without any intracavity mode-lockers) by the free-running quantum cascade lasers (QCLs) with high efficiency These combs do not look anything like conventional OFCs as the phases of each mode are different and in temporal domain the OFC is a combination of amplitude- and phase-modulated signals rather than a short pulse. Despite this fact the experimental evidence suggests that the linewidth of the QCL OFC is just as narrow as that of a QCL operating in the single mode. While universally acknowledged\, this observation is not fully understood.  In this work we rigorously prove the narrowness of the QCL OFC linewidth by deriving the expression for the Schawlow-Townes linewidth and obtain an analytical expression for the maximum potential bandwidth of the frequency modulated comb naturally occurring in free running QCL’s. The bandwidth is shown to critically depend on the flatness of the gain spectrum and the cavity length and less so on pump current. The results firmly establish that the performance of QCL frequency combs can be on par with combs generated by other means. \nExpanding Dynamic Range (Linearizing) of Electro Optic Modulators by All Optical Means\nAnalog photonic systems are crucial for expanding RF photonics applications and higher-order coherent digital systems. The increasing demand for high-performance RF photonic links in 5G and other applications necessitates highly linear transmitters. A key challenge is the inherent nonlinearity of Mach-Zehnder modulators (MZMs)\, which limits the spurious-free dynamic range (SFDR). Numerous MZM linearization techniques have been explored\, including electrical\, optical\, and mixed methods. Electrical linearization suffers from bandwidth limitations and high power consumption. Mixed methods\, often employing multiple modulators\, require precise control of numerous voltages and may not compensate for second harmonic distortion. In this talk I highlight the work on development of integrated rugged all-optical linear modulators using three different linearization schemes: (1) Ring Assistant MZI (RAMZI)\, (2) Grating Assisted MZI (GAMI) and (3) Combined Dual Output MZI. The modulators have been realized using Si\, III-V and LiNbO3 platforms and have show record high FDR results. \nBio –  Jacob B. Khurgin\, a professor of electrical and computer engineering\, is known for his diverse and eclectic research in the areas of optics\, electronics\, condensed matter physics\, and telecommunications. Khurgin earned his BS and MS in Optics from the Institute of Fine Mechanics and Optics in St. Petersburg\, Russia in 1977 and 1979\, respectively. He immigrated to the United States in 1980 and spent eight years working as a researcher at Philips Laboratories in New York. He earned a PhD in Electro-Physics from New York University in 1987 and joined Johns Hopkins in 1988. \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 817 6524 8204 Passcode 014783
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-jacob-khurgin/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250328T110000
DTEND;TZID=America/New_York:20250328T120000
DTSTAMP:20260811T094635
CREATED:20250128T151851Z
LAST-MODIFIED:20250205T160849Z
UID:10001470-1743159600-1743163200@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Marc Serra Garcia
DESCRIPTION:Dr. Marc Serra Garcia (AMOLF) \nPhysical computing in metamaterials\nAbstract – There is a significant range of physical phenomena—from nonlinear elasticity\, to symmetry\, noise\, topology\, and disorder — that are rarely utilized in traditional computing paradigms. Yet these phenomena can unlock new efficiencies\, by directly processing signals in their natural domain\, and by bypassing the traditional abstraction stack associated with digital CMOS technology. However\, building physical computers is challenging. Information processing tasks generally involve complex input-output relations\, thus requiring designs that are highly expressive; and for these designs\, the relation between function and structure is nontrivial\, complicating the simulation\, design\, and fabrication of devices. In my talk\, I will illustrate our journey towards using metamaterials for physical computing\, with two recent examples. First\, I will talk about our results in passive speech recognition\, where we leverage a phononic metamaterial to implement wake-up-word detection with zero standby power consumption. Second\, I will discuss our ongoing work in self-learning materials\, that autonomously adapt to improve their performance—driven by their ability to form long-term memories in response to examples and external feedback. \nBio – Dr. Marc Serra-Garcia is a Caltech (MS 2013) and ETH Zurich (Ph.D. 2017) trained aerospace engineer researching materials with improved mechanical properties. He was the technical co-founder of the startup TapTools\, focusing on the development of cost and time-efficient material testing devices for manufacturing\, aerospace and construction industries. \nThis is an in-person seminar. If you opt to join via zoom use meeting ID 847 6467 4868 Passcode 355860
URL:https://asrc.gc.cuny.edu/event/photonics-initiative-seminar-marc-serra-garcia/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250331T110000
DTEND;TZID=America/New_York:20250331T120000
DTSTAMP:20260811T094635
CREATED:20250326T154820Z
LAST-MODIFIED:20250327T130827Z
UID:10001486-1743418800-1743422400@asrc.gc.cuny.edu
SUMMARY:Photonics Initiative Seminar: Armando Genco
DESCRIPTION:Armando Genco (Politecnico di Milano) \nUltrafast dynamics of coherent exciton-polaritons in van der Waals semiconductor metasurfaces\nAbstract – Metasurfaces based on transition metal dichalcogenides (TMDs) have emerged as a promising platform for controlling light at the nanoscale due to their exceptional optical properties\, including strong excitonic responses and intrinsically high refractive index. Unlike traditional dielectric metasurfaces\, TMD-based platforms enable highly confined optical modes with minimal losses\, making them ideal for applications in nanophotonics. The high refractive index of TMDs plays a crucial role in supporting Mie-type resonances and facilitating the realization of bound states in the continuum (BICs)\, which exhibit theoretically infinite quality factors and extreme field localization. The interplay between BICs and TMD metasurfaces opens new avenues for enhancing light-matter interactions\, paving the way for efficient nonlinear optics\, lasing\, and quantum photonic devices. \nIn my talk\, I will discuss highly tunable optical metasurfaces composed of nanorod-type unit cells made of bulk WS2\, where excitons are strongly coupled to quasi-BIC modes forming polariton states at room temperature. I will first focus on the often-overlooked polarization-dependent angular dispersion of the resonant modes\, which we characterized across the entire momentum space using hyperspectral imaging. The photonic band structure plays a crucial role in shaping the nonlinear behavior and ultrafast dynamics of polaritons\, which we investigated through various pump-probe spectroscopy techniques. Leveraging high temporal resolution\, we tracked the coherence of strong light–matter coupling\, revealing pronounced oscillations in the pump-probe traces\, signature of polariton quantum beats.” \nBio – Dr. Armando Genco is an Assistant Professor at Politecnico di Milano (Italy) and an expert in optics and photonics. His research primarily explores light-matter interactions between excitons in quantum materials and photons confined in optical micro- and nanoresonators\, both in static and transient conditions. \nThis is an in-person seminar.  If you opt to join via zoom use meeting ID 880 6343 0208  Passcode 553685
URL:https://asrc.gc.cuny.edu/event/37649/
LOCATION:ASRC Auditorium\, 85 St. Nicholas Terrace\, New York\, NY\, 10031\, United States
CATEGORIES:Photonics
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