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X-WR-CALNAME:Department of Physics and Astronomy
X-ORIGINAL-URL:https://physics.sciences.ncsu.edu
X-WR-CALDESC:Events for Department of Physics and Astronomy
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BEGIN:VTIMEZONE
TZID:America/New_York
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DTSTART:20230312T070000
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TZOFFSETTO:-0500
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DTSTART:20231105T060000
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TZOFFSETTO:-0400
TZNAME:EDT
DTSTART:20240310T070000
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DTSTART:20241103T060000
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TZOFFSETTO:-0400
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DTSTART:20250309T070000
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240813T080000
DTEND;TZID=America/New_York:20240813T170000
DTSTAMP:20260425T150129
CREATED:20240430T182704Z
LAST-MODIFIED:20240430T182705Z
UID:50416-1723536000-1723568400@physics.sciences.ncsu.edu
SUMMARY:2024 LEAP!
DESCRIPTION:The LEAP! workshop invites high school students to investigate these questions inside the labs of working scientists at NC State. \nThe 2024 event will be held on Tuesday\, Aug 13. You can sign up via this link at The Science House.
URL:https://physics.sciences.ncsu.edu/event/2024-leap/
LOCATION:Riddick Hearth\, 2401 Katherine Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:For the Public,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240715T123000
DTEND;TZID=America/New_York:20240715T163000
DTSTAMP:20260425T150129
CREATED:20240507T140854Z
LAST-MODIFIED:20240528T144415Z
UID:51156-1721046600-1721061000@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Merve Baksi
DESCRIPTION:Interface-Engineered Phases of Superconducting Complex Oxide Thin Films
URL:https://physics.sciences.ncsu.edu/event/final-defense-merve-baksi/
LOCATION:Virtual
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240624T100000
DTEND;TZID=America/New_York:20240624T120000
DTSTAMP:20260425T150129
CREATED:20240215T153557Z
LAST-MODIFIED:20240215T153557Z
UID:44028-1719223200-1719230400@physics.sciences.ncsu.edu
SUMMARY:Final Defense-  David Dickson
DESCRIPTION:Quantifying the Efficiency of Roche Lobe Overflow in the Formation of Merging Black Hole Binaries
URL:https://physics.sciences.ncsu.edu/event/final-defense-david-dickson/
LOCATION:Riddick 400P\, 2401 Katherine Stinson Dr\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240624T090000
DTEND;TZID=America/New_York:20240624T230000
DTSTAMP:20260425T150129
CREATED:20240529T165503Z
LAST-MODIFIED:20240529T165503Z
UID:51192-1719219600-1719270000@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Xiang Li
DESCRIPTION:Universal density shift coefficients for the transport properties of a unitary Fermi gas
URL:https://physics.sciences.ncsu.edu/event/final-defense-xiang-li/
LOCATION:Riddick 415\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240610T110000
DTEND;TZID=America/New_York:20240610T140000
DTSTAMP:20260425T150129
CREATED:20240531T173959Z
LAST-MODIFIED:20240531T173959Z
UID:51194-1718017200-1718028000@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Efekan Kokcu
DESCRIPTION:Lie algebraic methods for simulating many body Hamiltonians on quantum computers
URL:https://physics.sciences.ncsu.edu/event/final-defense-efekan-kokcu/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240606T093000
DTEND;TZID=America/New_York:20240606T113000
DTSTAMP:20260425T150129
CREATED:20240507T140704Z
LAST-MODIFIED:20240603T182333Z
UID:51154-1717666200-1717673400@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Kelsey Lund
DESCRIPTION:How the Gentle Winds Beckon: r-Process Nucleosynthesis in Neutron Star Merger Winds
URL:https://physics.sciences.ncsu.edu/event/final-defense-kelsey-lund/
LOCATION:Riddick 400P\, 2401 Katherine Stinson Dr\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240517T093000
DTEND;TZID=America/New_York:20240517T110000
DTSTAMP:20260425T150129
CREATED:20240329T153232Z
LAST-MODIFIED:20240501T145541Z
UID:47853-1715938200-1715943600@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Himanish Ganjoo
DESCRIPTION:Illuminating Hidden Sector Dark Matter With Early Matter Domination
URL:https://physics.sciences.ncsu.edu/event/final-defense-himanish-ganjoo/
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240508T140000
DTEND;TZID=America/New_York:20240508T160000
DTSTAMP:20260425T150129
CREATED:20240322T173346Z
LAST-MODIFIED:20240322T173346Z
UID:47151-1715176800-1715184000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Anil Radhakrishnan
DESCRIPTION:Nonlinear Dynamics with Neural Networks
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-anil-radhakrishnan/
LOCATION:Riddick Hall 106\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240507T133000
DTEND;TZID=America/New_York:20240507T150000
DTSTAMP:20260425T150130
CREATED:20240425T192515Z
LAST-MODIFIED:20240507T141010Z
UID:50220-1715088600-1715094000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Jing Qu
DESCRIPTION:Structure and dynamics of selected nucleic acid double helices of simple sequence repeats: Trinucleotide Repeats CTG\, GTC\, CUG\, GUC\, Pentanucleotide Repeats TGGAA\, UGGAA\, and Parallel-Stranded GAC\, CAG
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-jing-qu/
LOCATION:Riddick Hall 106\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240425T090000
DTEND;TZID=America/New_York:20240425T230000
DTSTAMP:20260425T150130
CREATED:20240318T173948Z
LAST-MODIFIED:20240424T015826Z
UID:47050-1714035600-1714086000@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Hang Yu
DESCRIPTION:Nuclear Theory in Finite Volume and Application to Astrophysical Reactions
URL:https://physics.sciences.ncsu.edu/event/final-defense-hang-yu/
LOCATION:Riddick 400P\, 2401 Katherine Stinson Dr\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240422T150000
DTEND;TZID=America/New_York:20240422T170000
DTSTAMP:20260425T150130
CREATED:20240410T194049Z
LAST-MODIFIED:20240410T194104Z
UID:48755-1713798000-1713805200@physics.sciences.ncsu.edu
SUMMARY:McCormick Undergraduate Research Symposium
DESCRIPTION:Join us Monday\, April 22nd\, 3:00 pm for our annual celebration of undergraduate excellence in Physics! \nMcCormick Undergraduate Research Symposium
URL:https://physics.sciences.ncsu.edu/event/mccormick-undergraduate-research-symposium/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240419T123000
DTEND;TZID=America/New_York:20240419T163000
DTSTAMP:20260425T150130
CREATED:20240325T161758Z
LAST-MODIFIED:20240405T135445Z
UID:47523-1713529800-1713544200@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Brent Boland
DESCRIPTION:Manipulating flow rate and ionic conductivity in unconfined melt electrospinning and the effect on fiber and spinning morphology
URL:https://physics.sciences.ncsu.edu/event/final-defense-brent-boland/
LOCATION:Riddick Hall 106\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240418T090000
DTEND;TZID=America/New_York:20240418T110000
DTSTAMP:20260425T150130
CREATED:20240405T131922Z
LAST-MODIFIED:20240405T131922Z
UID:48406-1713430800-1713438000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Ashiqul Islam Dip
DESCRIPTION:Dynamics of Particles and Fields in Cylindrically Symmetric Spacetimes
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-ashiqul-islam-dip/
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240415T160000
DTEND;TZID=America/New_York:20240415T170000
DTSTAMP:20260425T150130
CREATED:20240105T160600Z
LAST-MODIFIED:20240105T160600Z
UID:40187-1713196800-1713200400@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Moumita Das
DESCRIPTION:Title and Abstract details are forthcoming. \nHost: Mary Elting
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-moumita-das/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240415T110000
DTEND;TZID=America/New_York:20240415T130000
DTSTAMP:20260425T150130
CREATED:20240411T182937Z
LAST-MODIFIED:20240411T182937Z
UID:48789-1713178800-1713186000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Mendel Nguyen
DESCRIPTION:On the phases of theories with Z_N 1-form symmetry and the roles of center vortices and magnetic monopoles
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-mendel-nguyen/
LOCATION:Riddick 202
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240408T160000
DTEND;TZID=America/New_York:20240408T170000
DTSTAMP:20260425T150130
CREATED:20240105T160334Z
LAST-MODIFIED:20240325T170626Z
UID:40183-1712592000-1712595600@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Stephen Roberson
DESCRIPTION:Title: Navigating the backlash of anti-DEI sentiment \nAbstract: In this talk\, the pros and cons of DEI initiatives in the American workplace will be examined from the point of view of those that are generally thought to benefit from these policies. A brief history on the state of the American workplace and the effect of DEI efforts like affirmative action on the American workplace over the last 45 years will be discussed. The wide range of reactions by those most effected by the attempted systemic removal and pushback against these policies when they were implemented will be examined. Finally\, the effect of minority serving institutions and organizations will be highlighted as they serve their constituents by offering professional and emotional support while continuing to push for excellence in an increasingly hostile professional settings. \nBio: Stephen Roberson graduated with his Ph.D. in physics from Florida A&M University in 2006. After graduation\, he was awarded a National Research Council Postdoctoral Research Associateship at the Army Research Laboratory at Aberdeen Proving Grounds\, MD. He worked for nine years as a contractor with the Army Research Laboratory where he did several experiments using femtosecond laser systems for molecular spectroscopy\, laser-material interaction studies\, etc. After leaving ARL\, he went to work for five years at C5ISR where he constructed another ultrafast laser laboratory and performed laser-material interaction research on materials of interest as well as other projects. He’s currently the lead physicist of the Applied Physics Division at 4S Silversword working on a number of projects dealing with free space optical communications and remote laser spectroscopy. Dr. Roberson is the newly inducted president of the National Society of Black Physicists. Before serving as president\, he served on the executive board of the National Society of Black Physicists for eight years\, first as the Administrative Executive Officer for seven years and the President-Elect for the past year. \n  \nHost: Sharonda LeBlanc/DEI
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-stephen-roberson/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="Sharonda LeBlanc":MAILTO:sleblan@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240401T160000
DTEND;TZID=America/New_York:20240401T170000
DTSTAMP:20260425T150130
CREATED:20240105T154534Z
LAST-MODIFIED:20240105T160201Z
UID:40180-1711987200-1711990800@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Saori Pastore
DESCRIPTION:Title and Abstract details are forthcoming. \nHost: Evan Grohs
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-saori-pastore-a/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="Evan Grohs":MAILTO:ebgrohs@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240401T110000
DTEND;TZID=America/New_York:20240401T130000
DTSTAMP:20260425T150130
CREATED:20240322T171836Z
LAST-MODIFIED:20240322T172219Z
UID:47149-1711969200-1711976400@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Shaswat Tiwari
DESCRIPTION:TMD factorization: Unifying small-x and large-x
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-shaswat-tiwari/
LOCATION:Riddick 202
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240325T160000
DTEND;TZID=America/New_York:20240325T170000
DTSTAMP:20260425T150130
CREATED:20240105T154114Z
LAST-MODIFIED:20240219T165543Z
UID:40177-1711382400-1711386000@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Binghai Yan
DESCRIPTION:Title: Topology\, Spin and Orbital in DNA-like Chiral Quantum Materials \nAbstract: In chemistry and biochemistry\, chirality represents the structural asymmetry characterized by non-superimposable mirror images for a material like DNA. In physics\, however\, chirality commonly refers to the spin-momentum locking of a particle or quasiparticle in the momentum space. While seemingly unrelated characters in different fields\, the structural chirality leads to the electronic chirality featured by the orbital-momentum locking encoded in the wavefunction of chiral molecules or solids\, i.e. the chirality information transfers from the atomic geometry to the electronic orbital. The electronic chirality provides deep insights into the chirality-induced spin selectivity (CISS)\, in which electrons exhibit salient spin polarization after going through a chiral material. It also gives rise to new phenomena\, such as anomalous circularly polarized light emission (ACPLE)\, in which the light handedness relies on the emission direction. These chirality-driven effects will generate broad impacts in fundamental science and technology applications in spintronics\, optoelectronics\, and biochemistry. \nReferences:[1] Y Liu\, J Xiao\, J Koo\, B Yan\, Chirality-driven topological electronic structure of DNA-like\nmaterials\, Nature Materials 20 (5)\, 638 (2021). [2] Y. Adhikari\, et al\, Interplay of Structure Chirality\, Electron Spin and Topological Orbital in Chiral Molecular Spin Valves\, Nature Comm\, 14\, 5163 (2023). [3] L. Wan\, Y. Liu\, M.J. Fuchter\, B. Yan\, Anomalous circularly polarized light emission in organic light-emitting diodes caused by orbital–momentum locking\, Nature Photonics 17\, 193 (2023). \nHost: Dali Sun 
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-binghai-yan/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240314T103000
DTEND;TZID=America/New_York:20240314T123000
DTSTAMP:20260425T150130
CREATED:20240308T144908Z
LAST-MODIFIED:20240313T161155Z
UID:46350-1710412200-1710419400@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Camen Royse
DESCRIPTION:Fermi suppression  of optically-induced inelastic scattering: Toward optical control of a weakly interacting Fermi gas
URL:https://physics.sciences.ncsu.edu/event/final-defense-camen-royse/
LOCATION:Riddick 202
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240304T160000
DTEND;TZID=America/New_York:20240304T170000
DTSTAMP:20260425T150130
CREATED:20240105T151822Z
LAST-MODIFIED:20240124T163934Z
UID:40173-1709568000-1709571600@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Andrew Fox
DESCRIPTION:Title: Gas Flows in the Milky Way Halo \nAbstract: Gas flows play crucial roles in galaxy evolution. Inflowing gas provides fuel for new star formation\, while outflowing gas carries away the chemically-enriched products from earlier generations of stars. In the Milky Way\, we have a front-row seat for viewing the multi-phase gas flows that circulate material between the Galactic disk and halo. I will introduce the gas flows in the Milky Way halo\, and then focus on two prominent examples: the Fermi Bubbles\, a giant pair of outflowing lobes surrounding the Galactic Center\, and the Magellanic Stream\, an interwoven tail of gas filaments trailing the Magellanic Clouds\, two satellite galaxies in orbit around the Milky Way. Recent observations from the Hubble Space Telescope and numerical simulations have provided new insight into the origin of the Fermi Bubbles and the Magellanic Stream\, revealing the mechanisms by which the Milky Way exchanges mass with its surroundings and continues to grow and evolve over time. \nHost: Rongmon Bordoloi
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-andrew-fox/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240227T103000
DTEND;TZID=America/New_York:20240227T120000
DTSTAMP:20260425T150130
CREATED:20240215T152758Z
LAST-MODIFIED:20240215T152851Z
UID:44026-1709029800-1709035200@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Taylor Couture
DESCRIPTION:Exploration of Determinants of Spindle Elongation through Characterization of Ase1
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-taylor-couture/
LOCATION:Riddick 202
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240226T160000
DTEND;TZID=America/New_York:20240226T170000
DTSTAMP:20260425T150130
CREATED:20240105T151540Z
LAST-MODIFIED:20240122T185501Z
UID:40170-1708963200-1708966800@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Jianming Wen
DESCRIPTION:Title: Advancing Quantum Information Science and Technologies with Narrowband Entangled-Photon Generation in Neutral Atoms \nAbstract: Quantum information science stands at a transformative crossroads\, poised to revolutionize diverse fields such as computing\, cryptography\, communication\, networks\, metrology\, sensing\, and imaging. Among various quantum systems\, photonic qubits and neutral atoms shine as pivotal catalysts for this quantum revolution. This presentation explores the synergistic convergence of these platforms\, with a central focus on pioneering narrowband entangled biphoton sources via spontaneous four-wave mixing (SFWM) in coherent atomic ensembles. Notably\, we’ve recently achieved the unique feat of creating a reliable genuine W-class narrowband triphoton source directly through spontaneous six-wave mixing (SSWM) in hot atomic vapor with an unprecedented generation rate for the first time. Of importance\, this breakthrough has inadvertently unveiled profound connections with the renowned three-body problem in mathematics and celestial mechanics for centuries. Our journey commences with foundational quantum concepts\, surveys alternative qubit platforms\, and dives into conventional biphoton generation methods like spontaneous parametric down-conversion (SPDC) and SFWM in solid materials. We unveil our recent breakthroughs in narrowband bi- and tri-photon generation within coherent atoms\, promising long-distance quantum information processing and networking. Single  photons\, embodying unshakeable quantum properties\, serve as versatile information carriers\, while neutral atoms offer an ideal setting for nurturing long-lived qubits and quantum memory. We demystify the intricate mechanisms underlying entanglement generation with neutral atoms\, shedding light on SFWM and SSWM principles. The talk concludes by showcasing our latest advancements\, highlighting our capacity to generate unparalleled coherence and tunability in narrowband entangled photons. These attributes propel scalable quantum networks\, connecting quantum processors and enabling secure global information exchange. As we embark on this enlightening journey\, we illuminate the pivotal roles of single photons and neutral atoms in advancing quantum information science and technologies\, inspiring fresh research avenues toward a quantum-enabled future. \nHost: Qing Gu \nJianming Wen is an associate professor in the Physics Department at Kennesaw State University (KSU). He earned his PhD in physics from the University of Maryland in 2007\, specializing in quantum optics within a cornerstone research group. So far\, he has authored 49 peer-reviewed publications in renowned journals\, including Nat. Phys.\, Nat. Photon.\, Nat. Commun.\, PRL\, Adv. Opt. Photon.\, among others. His pioneering contributions span diverse fields\, notably narrowband entangled-photon generation\, non-Hermitian physics\, self-imaging\, and integrated photonics. His research expertise resides at the nexus of fundamental physics and real applications\, bridging AMO physics\, photonics\, optical imaging\, condensed matter physics\, and quantum\ninformation science and technologies. His commitment to advancing scientific knowledge extends to active roles as a dedicated reviewer for over 85 major peer-reviewed journals\, encompassing reputable publishers like APS\, Optica\, Nature\, Wiley\, ACS\, IEEE\, IOP\, Springer\, AIP\, MDPI\, Frontiers\, and Elsevier. His exceptional service has garnered numerous Outstanding Reviewer awards from these publishers. In addition to his prolific\nresearch and reviewing contributions\, he holds key editorial responsibilities as an Editorial Board member or Editor for several esteemed journals. His expertise is often sought by renowned funding agencies\, including NSF\, DoE\, AFOSR\, ANR\, RGC\, ISF\, MIUR\, Gordon and Betty Moore Foundation\, and others. His exceptional scholarly contributions were duly recognized when he received the prestigious KSU Outstanding Research and Creative Activity Award in 2021. Since joining KSU in 2017\, he has demonstrated his research acumen by successfully securing over $1 million in research funds from NSF and DoE. \n 
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-jianming-wen/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="Qing Gu":MAILTO:qgu3@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240226T100000
DTEND;TZID=America/New_York:20240226T113000
DTSTAMP:20260425T150130
CREATED:20240214T140030Z
LAST-MODIFIED:20240215T152930Z
UID:43974-1708941600-1708947000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Andrew Comstock
DESCRIPTION:Effects of Crystal Symmetry on Spin Precession Dynamics in Perovskites
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-andrew-comstock/
LOCATION:Partners II 1514
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240222T120000
DTEND;TZID=America/New_York:20240222T130000
DTSTAMP:20260425T150130
CREATED:20240219T163900Z
LAST-MODIFIED:20240221T133018Z
UID:44354-1708603200-1708606800@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Carmen Lee
DESCRIPTION:Title: Relating the Microscale to the Macroscale in Granular Materials \nAbstract: Granular materials\, like soils and powders\, play crucial roles in diverse applications from construction to agriculture to pharmaceuticals. Unlike continuous media\, where strength can be determined by bulk material properties\, the strength of granular materials is highly dependent on grain connectivity (fabric)\, force transmission\, and frictional mobilization at the particle scale. \nFurthermore\, these bulk properties are strongly dependent on the geometry and history of loading. It is well established that anisotropy in fabric and force transmission through a granular packing directly relates to the bulk scale strength of the packing. Although the relationship between particle-scale anisotropy and macroscale properties has been verified through simulated conditions\, we have observed that it is valid for a broad variety of loading histories and geometries in experimental granular packings. \nIn this talk\, I will present experiments conducted on a photoelastic granular system — allowing us to measure individual interparticle contact forces — subject to compressive and shear loading. By tracking both particle positions and interparticle contact force vectors\, we map the anisotropy of the fabric and forces to the macroscale stress and strain. We find excellent agreement between the anisotropic particle-scale measures and the macroscale responses in experiments\, independent of the loading geometry\, showing that with knowledge of the forces and positions of the particles\, one can predict the strength of the packing.
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-carmen-lee/
LOCATION:Riddick 314
CATEGORIES:CMB Seminar,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240219T160000
DTEND;TZID=America/New_York:20240219T170000
DTSTAMP:20260425T150130
CREATED:20240105T150728Z
LAST-MODIFIED:20240219T142514Z
UID:40167-1708358400-1708362000@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: James Byrnes
DESCRIPTION:Title: Setup and Applications of SAXS/WAXS at the Life Sciences X-ray Scattering Beamline \nAbstract: Small and Wide X-ray Scattering is a popular technique to characterize the size\, shape and interactions amongst particles in solution. Scattering from particles in solution is isotropic and averaged over all particle orientations\, thus 3-D information is lost. Resulting datasets are a 1-D profile that can span a particular q-range\, depending on the experimental setup. Mathematical manipulations of the 1-D profile provide values such as the Radius of Gyration (Rg)\, a measure of particle compactness\, maximal particle dimensions (Dmax)\, and particle flexibility. This information can be employed to build low resolution 3-D in silico models to visualize the overall shape of particles and can be combined with Molecular Dynamics Simulations\, driven by the 1-D scattering profile. Here I will discuss the fundamentals of an X-ray scattering experiment\, the beamline setup\, and applications at the Life Sciences X-ray Beamline within the National Synchrotron Light Source II. \nHost: Alex Rolband and Sharonda LeBlanc
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-james-byrnes/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="Sharonda LeBlanc":MAILTO:sleblan@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240215T140000
DTEND;TZID=America/New_York:20240215T150000
DTSTAMP:20260425T150130
CREATED:20240209T203542Z
LAST-MODIFIED:20240209T203542Z
UID:43519-1708005600-1708009200@physics.sciences.ncsu.edu
SUMMARY:TUNL Seminar Viewing
DESCRIPTION:Speaker: Eve Armstrong\n\nInstitution: New York Institute of Technology\, Manhattan Campus\n\nTitle: “Predicting the Behavior of Sparsely-Sampled Systems Across Astrophysics\, Neurobiology\, and Epidemiology”\n\nAbstract: Inference is a term that encompasses many techniques including machine learning and statistical data assimilation (SDA). Unlike machine learning\, which harnesses predictive power from extremely large data sets\, SDA is designed for sparsely sampled systems.  This is the realm of study of any realistic system in nature.  SDA was invented for numerical weather prediction\, an inherently nonlinear – and chaotic – problem.  My collaborators and I have taken SDA into new fields\, to inform the role of neutrinos in astrophysics\, biological neuronal networks\, and an epidemiological population model tailored to the coronavirus SARS-CoV-2.  We use SDA to seek solutions that are consistent with both sparse measurements and a partially-known dynamical model of the system from which those measurements arose.  The versatility of SDA across vast disciplines (and vast temporal and spatial scales) shows how these “distinct” environments possess commonalities that can inform one another.\n\nTime/Date: 2:00 pm Thursday 15 Feb 2024\n\nZoom link: https://duke.zoom.us/j/92085251865?pwd=bG5Cb2ZaY2FHblpXMzlEZC92Q0dBUT09\n\nRemote viewing location: Riddick 415
URL:https://physics.sciences.ncsu.edu/event/tunl-seminar-viewing/
LOCATION:Riddick 415\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Other Seminars
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240215T133000
DTEND;TZID=America/New_York:20240215T150000
DTSTAMP:20260425T150130
CREATED:20240126T004832Z
LAST-MODIFIED:20240126T004832Z
UID:41762-1708003800-1708009200@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Anjali Agrawal
DESCRIPTION:Exploring quantum algorithms for simulating spin models and benchmarking them
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-anjali-agrawal/
LOCATION:Riddick 202
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240212T160000
DTEND;TZID=America/New_York:20240212T170000
DTSTAMP:20260425T150130
CREATED:20240105T150218Z
LAST-MODIFIED:20240206T190749Z
UID:40164-1707753600-1707757200@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Ajay Ram Srimath Kandada
DESCRIPTION:Dr Ajay Ram Srimath Kandada received his PhD in Physics from Politecnico di Milano\, Italy in 2013 for his work on ultrafast spectroscopy of organic photovoltaic materials. He subsequently moved to the Italian Institute of Technology as a post-doctoral researcher to investigate bulk metal-halide perovskites’ excited state dynamics and defect physics. In 2016\, he received the Marie Sklodowska Curie global fellowship from the European Commission to investigate\ncoherent exciton dynamics using advanced optical spectroscopies at the University of Montreal (Canada)\, Georgia Institute of Technology (USA) and at the Italian Institute of Technology (Italy). He was appointed Adjunct Assistant Professor at Wake Forest University in 2020 and later tenure-track Assistant Professor in 2022. His research interests include the electronic and optical properties of emerging semiconductors probed by nonlinear ultrafast spectroscopy and quantum-optical methods. \n  \nTitle: Nonlinear Spectroscopy with Classical and Quantum Light to Probe Coherent Exciton Dynamics \nAbstract: Coherent nonlinear spectroscopy provides a unique vantage point for exploring system-bath interactions in materials. Specifically\, spectral line shapes can reveal the nature and dynamics of the environmental fluctuations impacting the system of interest. Here we discuss how stochastic non-equilibrium exciton dynamics manifest in the peculiar spectral lineshapes and how they provide mechanistic insights into the nature of exciton-phonon and exciton-exciton interactions in a variety of material systems\, including in Ruddelsden Popper metal halides[1] and perovskite quantum dots[2]. Despite the success of such classical optical probes in unveiling the many-body physics in materials\, several ambiguities still exist in the resultant photophysical models. These uncertainties can be primarily attributed to the use of high excitation intensities for the measurements. In this context\, we systematically address these discrepancies by examining experimental nonlinear spectra presented in the preceding section. To overcome this challenge\, we introduce an alternative experimental methodology based on spectrally entangled biphoton states as a probe of many-body dynamics[3]. In a proof-of-principle experiment\, we transmit the biphoton state through a strongly coupled microcavity and reliably measure and analyze the variations in the spectral correlations between the photons. We will discuss how such a measurement can effectively quantify many-body interactions between photo-excitations within the microcavity[4]. \n[1] A. R. Srimath Kandada\, H. Li\, F. Thouin\, E. R. Bittner and C. Silva\, Stochastic scattering theory for excitation-induced dephasing: Time dependent nonlinear coherent exciton lineshapes\, J. Chem. Phys.\, 153\, 164706 (2020).\n[2] E. Rojas-Gatjens\, D. O. Tiede\, K. A. Koch\, C. Romero-Perez\, J. F. Galisteo-Lopez\, M. E. Calvo\, H. Miguez\, A. R. Srimath Kandada\, Exciton-carrier coupling in a metal halide perovskite nanocrystal assembly probed by two-dimensional coherent spectroscopy\, ArXiv: 2309.04338 (2023).\n[3] L. Moretti\, E. Rojas-Gatjens\, L. Uboldi\, D. O. Tiede\, E. J. Kumar\, C. Trovatello\, F. Preda\, A. Perri\, C. Manzoni\, G. Cerullo\, A. R. Srimath Kandada\, Measurement principles of quantum spectroscopy of molecular materials with entangled photons\, J. Chem.Phys.\, 159\, 084201(2023).\n[4] R. Malatesta\, L. Uboldi\, E. J. Kumar\, E. Rojas-Gatjens\, L. Moretti\, A. Cruz\, V. Menon\, G. Cerullo\, A. R. Srimath Kandada\, Optical microcavities as platforms for entangled photon spectroscopy\, ArXiv: 2309.04751[quant-ph] (2023). \nHost: Kenan Gundogdu
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-ajay-ram-srimath-kandada/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="Kenan Gundogdu":MAILTO:kgundog@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240205T160000
DTEND;TZID=America/New_York:20240205T170000
DTSTAMP:20260425T150130
CREATED:20240105T145855Z
LAST-MODIFIED:20240122T151751Z
UID:40161-1707148800-1707152400@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Rebecca Surman
DESCRIPTION:Title: Nuclear Physics and the Origins of the Heaviest Elements \nAbstract: The groundbreaking discovery of the neutron star merger event GW170817 ushered in a new era of multimessenger astrophysics. One key observation was the optical signal that accompanied GW170817\, which provided the first firm proof that neutron star mergers produce heavy elements. Still\, it is not known exactly which elements are produced by mergers and in what proportions. Are neutron star mergers the sole astrophysical source of the heaviest elements or do other extreme events contribute? A full understanding of neutron star mergers and their role in galactic chemical evolution requires progress in a number of areas including nuclear physics. Thousands of exotic nuclear species participate in neutron star merger nucleosynthesis\, and their properties shape abundance patterns and kilonova signals. Here we discuss how nuclear physics uncertainties influence predictions of nucleosynthesis observables. We then explore the promise of experimental campaigns at rare isotope beam facilities to both reduce these uncertainties and provide insight into astrophysical environments of heavy element production. \nHost: Ian Roederer
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-rebecca-surman/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
ORGANIZER;CN="Ian Roderer":MAILTO:iuroederer@ncsu.edu
END:VEVENT
END:VCALENDAR