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X-WR-CALDESC:Events for Department of Physics and Astronomy
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250113T160000
DTEND;TZID=America/New_York:20250113T170000
DTSTAMP:20260425T100928
CREATED:20241206T170334Z
LAST-MODIFIED:20250110T153235Z
UID:51676-1736784000-1736787600@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Steve Johnston
DESCRIPTION:Title and abstract details are forthcoming. \nHost:  Alexander Kemper
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-steve-johnston/
LOCATION:Riddick 325\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250106T160000
DTEND;TZID=America/New_York:20250106T170000
DTSTAMP:20260425T100928
CREATED:20241206T165917Z
LAST-MODIFIED:20250102T211607Z
UID:51674-1736179200-1736182800@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Shengwang Du
DESCRIPTION:Title: Distributed Quantum Computing with Shared Quantum Gate Processing Unit \nAbstract: Due to many physical constraints\, it is extremely challenging to build a monolithic fully connected quantum computer with a very large number (N) of qubits\, in which a direct control gate operation can be performed between two arbitrary qubits. Extending from N to N+1 in such a quantum computer is more than just physically adding one more qubit. For this reason\, the cost of such a fully connected quantum computer increases exponentially as the number of qubits increases. On the other side\, connecting two N-qubit remote quantum computers classically\, the dimension of their combined Hilbert space is only 22N=2(N+1). If they are fully connected though quantum links\, the dimension of the combined Hilbert space could reach 2(2N) which is much more powerful than two independent quantum computers. Consequently\, there is a growing interest in exploring distributed quantum computing (DQC) systems that can interconnect many small-sized\, cost-effective local quantum computers. In most conventional DQC architectures\, each local quantum computer is equipped with additional communication qubits dedicated to establishing remote entanglement links. The presence of these communication qubits not only substantially increases the cost of individual local quantum computer nodes\, but also renders the entanglement-communication-based scheme inherently non-deterministic. In this work\, we propose a DQC architecture in which individual small-sized quantum computers are connected through a shared quantum gate processing unit (S-QGPU) [1]. The S-QGPU comprises a collection of hybrid two-qubit gate modules [2] for remote gate operations. In contrast to conventional entangled-communication-based DQC systems\, S-QGPU effectively pools the resources together for remote gate operations\, and thus significantly reduces the cost of not only the local quantum computers but also the overall distributed system. Moreover\, S-QGPU’s shared resources for remote gate operations enable efficient resource utilization. When not all computing qubits in the system require simultaneous remote gate operations\, S-QGPU-based DQC architecture demands fewer resources\, further decreasing the overall cost. Unlike conventional DQC architectures based on entanglement communication\, wherein remote gate operations are accomplished via teleportation or cat-entanglers [3\, 4]\, the proposed S-QGPU approach for remote gate operations is deterministic and does not depend on any measurement-based post selection. \n[1] E. Oh\, X. Lai\, J. Wen\, and S. Du\, “Distributed quantum computing with photons and atomic memories\,” Adv. Quantum Technol. 6\, 2300007 (2023);\n[2] S. Du\, Y. Ding\, and C. Qiao\, “S-QGPU: Shared Quantum Gate Processing Unit for distributed quantum computing\,” arXiv:2309.08736 [quant-ph].\n[3] A. Yimsiriwattana and S. J. Lomonaco Jr\, “Generalized ghz states and distributed quantum computing\,” AMS Cont. Math. 381\, 131 (2005).\n[4] J. Eisert\, K. Jacobs\, P. Papadopoulos\, and M. B. Plenio\, “Optimal local implementation of nonlocal quantum gates\,” Phys. Rev. A 62\, 052317 (2000). \nHost: Weijian Chen
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-shengwang-du/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241220T090000
DTEND;TZID=America/New_York:20241220T110000
DTSTAMP:20260425T100928
CREATED:20241210T183423Z
LAST-MODIFIED:20241210T183423Z
UID:51686-1734685200-1734692400@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Andrew Lundeen
DESCRIPTION:Illuminating Hadronic Structures Through Exclusive Meson Electroproduction
URL:https://physics.sciences.ncsu.edu/event/final-defense-andrew-lundeen/
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:20241219T190000
DTEND;TZID=America/New_York:20241219T200000
DTSTAMP:20260425T100928
CREATED:20241206T160107Z
LAST-MODIFIED:20241206T160107Z
UID:51671-1734634800-1734638400@physics.sciences.ncsu.edu
SUMMARY:Discovering AI: The Nobel Prize That Shaped Machine Learning
DESCRIPTION:Abstract: \nThis year’s Nobel Prize in Physics honors groundbreaking research that laid the foundation for artificial intelligence. Join us as we delve into how two visionary scientists combined the principles of physics and computing to revolutionize AI\, driving technologies that are reshaping our world today. \n\nBio: \nDr. Xipeng Shen is a Professor of Computer Science at NC State University\, specializing in intelligent computing. His research contributions have earned him prestigious accolades\, including the DOE Early Career Award\, NSF CAREER Award\, and Google Faculty Research Award. He is an ACM Distinguished Member\, ACM Distinguished Speaker\, and a Senior Member of IEEE. Dr. Shen co-founded CoCoPIE Inc. and serves as a consultant or advisory board member for leading IT companies such as Facebook\, Intel\, Microsoft\, Huawei\, and Cisco.
URL:https://physics.sciences.ncsu.edu/event/discovering-ai-the-nobel-prize-that-shaped-machine-learning/
LOCATION:Daily Planet Cafe\, 121 W Jones St\, Raleigh\, NC\, 27601\, United States
CATEGORIES:For the Public
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241202T160000
DTEND;TZID=America/New_York:20241202T170000
DTSTAMP:20260425T100928
CREATED:20240717T155832Z
LAST-MODIFIED:20241118T221433Z
UID:51257-1733155200-1733158800@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Lu Bai
DESCRIPTION:Title: Studying Chromosome Conformation and Dynamics Using Chemically Induced Chromosomal Interaction (CICI) \nAbstract: Chemically Induced Chromosomal Interaction (CICI) method developed in our lab enables induction of stable chromosome interactions. This method allows us to accurately measure the encounter time\, or the “first passage time (FPT)” of two targeted loci on the chromosome. Here\, we extracted the FPTs from different loci pairs in G1-arrested cells and uncovered distinct patterns for inter- and intra-chromosomal interactions. Specifically\, we found that intra-chromosomal pairs with comparable physical distances formed contacts more rapidly than inter-chromosomal pairs\, despite exhibiting similar diffusion rates. This difference in distance dependencies indicates an active mechanism that promotes intra-chromosomal interaction. Through targeted depletion experiments\, we identified condensin\, but not cohesin\, as the key factor driving the short encounter time observed in intra-chromosomal loci. A polymer model based on these data suggests that condensin extrudes loops at low frequency but with high speed and long processivity. Overall\, these findings reveal a new role of condensin in regulating interphase yeast genome and provide insight into the searching mechanism of cis-regulatory elements for their targets in vivo. \nHost: Xingcheng Lin
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-lu-bai/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241118T160000
DTEND;TZID=America/New_York:20241118T170000
DTSTAMP:20260425T100928
CREATED:20241009T193325Z
LAST-MODIFIED:20241118T144842Z
UID:51554-1731945600-1731949200@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Anna Simon-Robertson
DESCRIPTION:Title: Direct Measurements of Capture Reactions \nAbstract: Capture cross sections (both for charged particles and neutrons) are required not only for nuclear astrophysics modeling\, but also for a variety of applications ranging from nuclear energy\, stockpile stewardship to national security. A variety of techniques have been utilized to perform such measurements to ensure low uncertainty in the measured cross sections over a wide energy range. In this talk\, an overview of my group’s efforts in measurements of capture-reactions cross sections will be presented. Investigations of the charged-particle capture reactions using the gamma-summing technique will be discussed\, followed by direct methods to measure neutron capture cross sections using a newly established Neutron Irradiation Station at Notre Dame. \nHost: Richard Longland
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-anna-simon-robertson/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241118T090000
DTEND;TZID=America/New_York:20241118T110000
DTSTAMP:20260425T100928
CREATED:20241112T145338Z
LAST-MODIFIED:20241112T145538Z
UID:51636-1731920400-1731927600@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - RJ Taylor
DESCRIPTION:Beta spectrum shape measurements of the Fierz interference term with different detector technologies
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-rj-taylor/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241114T120000
DTEND;TZID=America/New_York:20241114T130000
DTSTAMP:20260425T100928
CREATED:20240717T143915Z
LAST-MODIFIED:20241023T154711Z
UID:51235-1731585600-1731589200@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Hangjie Ji
DESCRIPTION:Title: Modeling\, analysis\, and control of droplet dynamics \nAbstract: Thin liquid films flowing down vertical fibers spontaneously exhibit complex interfacial dynamics\, leading to irregular wavy patterns and traveling liquid droplets. Such droplet dynamics are fundamental components in many engineering applications\, including mass and heat exchangers for thermal desalination\, as well as water vapor and particle capture. Recent experiments demonstrate that critical flow regime transitions can be triggered by varying inlet geometries and external fields. Similar interacting droplet dynamics have also been observed on hydrophobic substrates\, arising from interfacial instabilities in volatile liquid films. In this talk\, I will describe lubrication theory and weighted residual models for falling droplets. The coarsening dynamics of condensing droplets will be described by a simplified dynamical system. I will also present our recent results on developing optimal boundary control and mean-field control for droplet dynamics.
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-hangjie-ji/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241113T100000
DTEND;TZID=America/New_York:20241113T120000
DTSTAMP:20260425T100928
CREATED:20240916T165824Z
LAST-MODIFIED:20240916T165824Z
UID:51475-1731492000-1731499200@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Abhisha Thayambath
DESCRIPTION:Using computational models to bridge the gap between sub-cellular dynamics and tissue morphogenesis
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-abhisha-thayambath/
LOCATION:Riddick 415\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241113T100000
DTEND;TZID=America/New_York:20241113T120000
DTSTAMP:20260425T100928
CREATED:20240828T204251Z
LAST-MODIFIED:20240828T214953Z
UID:51433-1731492000-1731499200@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Ahmed Shaban
DESCRIPTION:Spatially Resolved Galactic Outflows in Gravitationally Lensed Galaxies
URL:https://physics.sciences.ncsu.edu/event/final-defense-ahmed-shaban/
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:20241113T100000
DTEND;TZID=America/New_York:20241113T110000
DTSTAMP:20260425T100928
CREATED:20241108T185413Z
LAST-MODIFIED:20241108T190915Z
UID:51624-1731492000-1731495600@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Benjamin Kincaid
DESCRIPTION:Heavy element correlation consistent effective core potentials
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-benjamin-kincaid/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241112T133000
DTEND;TZID=America/New_York:20241112T150000
DTSTAMP:20260425T100928
CREATED:20241108T174136Z
LAST-MODIFIED:20241112T145022Z
UID:51615-1731418200-1731423600@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Cole Teander
DESCRIPTION:The Production\, Transportation\, and Storage of Ultra-Cold Neutrons
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-cole-teander/
LOCATION:Riddick 415\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241111T160000
DTEND;TZID=America/New_York:20241111T170000
DTSTAMP:20260425T100928
CREATED:20241009T192928Z
LAST-MODIFIED:20241009T194643Z
UID:51552-1731340800-1731344400@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Sean Ressler
DESCRIPTION:Title and Abstract details are forthcoming. \nHost: Steve Reynolds
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-sean-ressler/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241111T110000
DTEND;TZID=America/New_York:20241111T130000
DTSTAMP:20260425T100928
CREATED:20241108T173514Z
LAST-MODIFIED:20241108T173640Z
UID:51612-1731322800-1731330000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Zichen Zhao
DESCRIPTION:Running coupling in small-x QCD
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-zichen-zhao/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241104T160000
DTEND;TZID=America/New_York:20241104T170000
DTSTAMP:20260425T100928
CREATED:20240717T155618Z
LAST-MODIFIED:20241101T211304Z
UID:51255-1730736000-1730739600@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Shashank Shekhar
DESCRIPTION:Title: Self-assembly Across Scales: From Cytoskeletal Dynamics to Evolution of Multicellularity \nAbstract: Self-assembly is a fundamental process that drives organization and function across biological systems\, from molecular complexes to multicellular structures. In this talk\, I will present our recent research on the role of self-assembly in actin cytoskeletal dynamics and the evolution of multicellularity. At the molecular scale\, our work challenges the classical model of actin treadmilling through advanced single-molecule and microfluidics-assisted TIRF imaging. We have uncovered a multicomponent ecosystem at actin filament ends\, where depolymerases\, polymerases\, and blockers interact to achieve precise spatial and temporal control of filament assembly and remodeling\, reshaping our understanding of cytoskeletal self-organization. At the organismal level\, I will discuss our study on the unicellular protist Stentor coeruleus\, which illustrates how self-assembly may have contributed to early multicellular organization. Our findings indicate that hydrodynamic coupling between neighboring cells enhances feeding efficiency\, with asymmetric benefits favoring specific individuals—a potential mechanism shedding light on the selective forces driving multicellularity. Together\, these studies demonstrate how self-assembly fosters complexity and functional adaptability across scales in biological systems. \nHost: Julio Monti Belmonte
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-shashank-shekhar/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241028T160000
DTEND;TZID=America/New_York:20241028T170000
DTSTAMP:20260425T100928
CREATED:20241016T210021Z
LAST-MODIFIED:20241018T144315Z
UID:51570-1730131200-1730134800@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Silke Henkes
DESCRIPTION:Title: Flow\, Fluctuate and Freeze: Modeling Collective Cell Motion Using Soft Active Matter \nAbstract: Active or living materials are made out of agents that can move on their own\, such as birds\, fish\, or artificial systems such as robots or active colloids. Cells are a core active material\, and the two-dimensional tissues known as epithelial cell sheets have a fundamental role in the developing embryo\, and also in adult tissues including the gut and the cornea of the eye. Soft and active matter provides a theoretical and computational framework to understand the mechanics and dynamics of these tissues.\nI will introduce the simplest useful class of models\, active brownian particles (ABPs)\, which incorporate uncoordinated active crawling over a substrate and mechanical interactions. Using this model\, I will show how the extended ‘swirly’ velocity fluctuations and the correlated motion of the edge seen in sheets on a substrate can be understood using a simple model that couples linear elasticity with disordered activity. We are able to quantitatively match experiments consisting of in-vitro epithelial cells.\nAdding a different source of activity\, cell division and apoptosis\, to such a model leads to a novel ‘self-melting’ dense fluid state. Together\, this model then allows us to explain what happens in a real biological system: The striking spiral flow pattern on the surface of the mouse cornea. It is in fact a steady-state flow pattern on a curved surface with a topological defect at the center where influx\, division\, extrusion and migration are finely balanced.
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-silke-henkes/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241025T090000
DTEND;TZID=America/New_York:20241025T110000
DTSTAMP:20260425T100928
CREATED:20241008T161826Z
LAST-MODIFIED:20241008T161826Z
UID:51534-1729846800-1729854000@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Liqiang Hou
DESCRIPTION:Dark Matter Annihilation in Small Scales
URL:https://physics.sciences.ncsu.edu/event/final-defense-liqiang-hou/
LOCATION:Virtual
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241022T153000
DTEND;TZID=America/New_York:20241022T163000
DTSTAMP:20260425T100928
CREATED:20241021T165645Z
LAST-MODIFIED:20241021T165645Z
UID:51584-1729611000-1729614600@physics.sciences.ncsu.edu
SUMMARY:TNT Colloquium Fabio Magistrelli
DESCRIPTION:Title: Self-consistent predictions of nucleosynthesis and kilonovae from compact binary mergers \nAbstract: Understanding the details of r-process nucleosynthesis in binary neutron star mergers (BNSM) ejecta is key to interpreting kilonova observations and identifying the role of BNSMs in the origin of heavy elements. I will present a new tool to self-consistently study\, in a two-dimensional\, ray-by-ray approximation\, the radiation-hydrodynamic evolution of BNSM ejecta with an online nuclear network (NN). Starting from ab-initio numerical relativity profiles and including detailed r-process reactions\, nuclear heating effects and a local thermalization model\, we are able to predict the matter composition evolution and the kilonova light curves up to the days timescale. I will outline the significant impact that the NN coupling with the ejecta dynamics has on the element formation and kilonova emission. I will also discuss how self-consistently accounting for this coupling can improve the reliability of the predictions obtained with the common postprocessing methods. Moreover\, I will give an overview of some work-in-progress applications of our code\, from the analysis of new hundreds-of-millisecond NR simulations to its application to cosmochemistry and galactic chemical evolution.
URL:https://physics.sciences.ncsu.edu/event/tnt-colloquium-fabio-magistrelli/
LOCATION:NC
CATEGORIES:Nuclear Theory Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241021T160000
DTEND;TZID=America/New_York:20241021T170000
DTSTAMP:20260425T100928
CREATED:20241018T143854Z
LAST-MODIFIED:20241018T143854Z
UID:51580-1729526400-1729530000@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Ibou Bah
DESCRIPTION:Title: Topological Stars and Gravity \nAbstract: In this colloquium\, I will discuss aspects of microscopic degrees of freedom of gravity and the physical motivation of quantum gravity. While the generic states are quantum mechanical\, our goal will be to understand a class of them that are coherent enough to admit classical descriptions in Einstein gravity. The existence of these states requires topological structures in spacetime that follow from the dynamics of compact extra dimensions. They behave as ultra-compact objects\, dubbed topological stars\, which can also model microscopic degrees of freedom of black holes. I will discuss why it is interesting to understand such objects in a new age of black hole astrophysics and various aspects of their observational properties.
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-ibou-bah/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
ATTACH;FMTTYPE=image/jpeg:https://physics.sciences.ncsu.edu/wp-content/uploads/sites/461/2024/10/bah.jpg
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241017T120000
DTEND;TZID=America/New_York:20241017T130000
DTSTAMP:20260425T100928
CREATED:20241008T200016Z
LAST-MODIFIED:20241016T205025Z
UID:51536-1729166400-1729170000@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Allyson Sgro
DESCRIPTION:Title: Understanding the emergence of microbial collective behaviors \n\nAbstract: Groups of cells of all kinds work together as part of multicellular behaviors ranging from collective migration to development. These behaviors are coordinated at the level of single cells\, where information about other cells and the environment are encoded in intracellular signaling dynamics that then drive cellular-level behaviors. We face two challenges in understanding how these complex behaviors are coordinated. First\, linking these signals and cellular-level behaviors to observed population-wide behaviors is challenging because it requires bridging size- and time-scales. Second\, because behaviors are coordinated via information cells can sense locally and this\ninformation is shaped by their environments\, it is important to interrogate these behaviors in their natural contexts. \nTo address these challenges\, we focus on a cellular slime mold\, Dictyostelium discoideum\, that uses a biochemical environmental signal during starvation to\ncoordinate aggregation into multicellular groups for continued survival. To better understand the signaling dynamics required for coordinating behavior\, we take a joint\ntheory-experiment approach where we interrogate mathematical models of how these biochemical signaling dynamics could potentially drive coordinated behaviors with\nexperimental data. Our work suggests several key features of signaling networks are important to robustly coordinate collective multicellular behaviors. To identify how\nnatural environments shape coordination and thus behaviors\, we have designed a naturalistic soil model environment where we can visualize how environments interact\nwith different types of cells to affect collective outcomes. Our current findings suggest that the single-cell and population-wide signaling behaviors that coordinate\ndevelopment are robust in highly complex\, three-dimensional environments\, and that there are also other important cellular properties we do not yet fully understand\nrequired for success in nature. \n 
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-allyson-sgro/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241010T120000
DTEND;TZID=America/New_York:20241010T130000
DTSTAMP:20260425T100928
CREATED:20240925T182521Z
LAST-MODIFIED:20240925T182521Z
UID:51511-1728561600-1728565200@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: James Sellers
DESCRIPTION:Title and abstract details are forthcoming.
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-james-sellers/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241007T160000
DTEND;TZID=America/New_York:20241007T170000
DTSTAMP:20260425T100928
CREATED:20241007T142437Z
LAST-MODIFIED:20241007T142437Z
UID:51523-1728316800-1728320400@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Anton Malko
DESCRIPTION:Speaker: Anton Malko\nTitle: Heralded Photons and Stimulated Emission Using Colloidal Semiconductor Quantum Shells\n\nAbstract: Spherically shaped semiconductor nanoplatelets\, called quantum shells (QSs) have recently attracted considerable attention as they exhibit strongly suppressed Auger recombination\, ultralong biexciton (BX) lifetimes and broad gain bandwidth. However\, no applications that demonstrate true lasing action using QSs in optical cavity configurations have been shown yet. Here\, we design distributed feedback (DFB) cavities using lithographically defined SiO2 nanopillar arrays etched on Si substrates and filled with close-packed QS films. Using only one QSs size (i.e.\, confinement)\, we demonstrate emission coupling and narrowband lasing across a wide spectral range\, from single exciton (X) to multiple exciton (MX) transitions. The record low lasing threshold results from almost completely impeded Auger recombination and low optical losses in the nanopillar cavity. Tuning of the lasing emission wavelength shows an excellent agreement with calculations as an array period is continuously varied\, while maintaining the mode confinement and quality (Q) factors.\nOn the other hand\, quantum information processing demands efficient quantum light sources (QLS) capable of producing high-fidelity single photons or entangled photon pairs. While colloidal semiconductor nanoparticles have long been thought for the purpose\, they generally suffer from broader linewidths and unstable emissions. This leads to spectrally inseparable emissions from X and BX states\, complicating the production of single photons and triggered photon pairs. We demonstrate that QSs achieve significant spectral separation (~ 75-80 meV) and long temporal stability\, enabling the observation of BX-X bunching and emission of photon pairs for over 200 seconds\, with minimal overlap between emissive features. The X-BX distinguishability allows for an in-depth theoretical characterization of cross-correlation strength\, placing it in perspective with photon pairs of epitaxial counterparts. \n 
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-anton-malko/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20241004T093000
DTEND;TZID=America/New_York:20241004T233000
DTSTAMP:20260425T100928
CREATED:20240904T174343Z
LAST-MODIFIED:20240904T174343Z
UID:51454-1728034200-1728084600@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Erin Crites
DESCRIPTION:Photothermal heating with nanoparticles: enhancing electrical conductivity in composites and water vapor formation in hydrogels
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-erin-crites/
LOCATION:Riddick 415\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240930T160000
DTEND;TZID=America/New_York:20240930T170000
DTSTAMP:20260425T100928
CREATED:20240917T180433Z
LAST-MODIFIED:20240917T180433Z
UID:51477-1727712000-1727715600@physics.sciences.ncsu.edu
SUMMARY:Colloquium: Eve Vavagiakis
DESCRIPTION:Title: A New Generation of Millimeter and Submillimeter Observations for Cosmology and Astrophysics\n\nAbstract: In our exciting era of experimental cosmology\, rapid developments in instrumentation and highly sensitive superconducting detectors have provided a wealth of arcminute-scale cosmic microwave background (CMB) data. These measurements are transforming our understanding of the evolution of our cosmos. I will present recent results from the Atacama Cosmology Telescope and discuss how our high-resolution CMB maps are at the frontier of Sunyaev-Zel’dovich effect science. I will also summarize the design and status of first light instruments for the CCAT Observatory and the Simons Observatory. These experiments will provide unparalleled measurements of the millimeter and submillimeter sky\, offering rich opportunities for cross-correlation studies with upcoming surveys and paving the way towards CMB-S4\, the next-generation ground-based CMB experiment. This will enable novel multifrequency science in the coming years\, testing cosmological models and opening new windows on galaxy evolution and fundamental physics.\n\nHost: Kasey Wagoner
URL:https://physics.sciences.ncsu.edu/event/colloquium-eve-vavagiakis/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240930T110000
DTEND;TZID=America/New_York:20240930T123000
DTSTAMP:20260425T100928
CREATED:20240924T192040Z
LAST-MODIFIED:20240924T192041Z
UID:51494-1727694000-1727699400@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Kaixin Song
DESCRIPTION:Experimental Studies of 24Mg States and Their Impact on Nucleosynthesis in Globular Clusters
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-kaixin-song/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240927T100000
DTEND;TZID=America/New_York:20240927T120000
DTSTAMP:20260425T100928
CREATED:20240924T191832Z
LAST-MODIFIED:20240924T191832Z
UID:51492-1727431200-1727438400@physics.sciences.ncsu.edu
SUMMARY:Final Defense - Christian White
DESCRIPTION:Development of a solid deuterium UCN source and associated components for studies of systematic effects in nEDM measurements
URL:https://physics.sciences.ncsu.edu/event/final-defense-christian-white/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240925T080000
DTEND;TZID=America/New_York:20240925T170000
DTSTAMP:20260425T100928
CREATED:20240925T182311Z
LAST-MODIFIED:20240925T182327Z
UID:51509-1727251200-1727283600@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Erin Crites
DESCRIPTION:Title: Photothermal Heating with Nanoparticles: Enhancing Electrical Conductivity in Composites and Water Vapor Formation in Hydrogels \nAbstract: Photothermal heating is the conversion of light into heat. When nanoparticles are embedded in materials\, we are able to precisely control localized heating in a sample using photothermal heating of the nanoparticles. We use this heating in two areas to enhance material properties and processes. We will first discuss carbon nanotube polymer composites\, which are desirable for their high electrical and thermal conductivity. However\, in order to form a percolated network\, nanotubes are coated with a surfactant to improve dispersion\, thus diminishing the ideal conductivity of the composite. Our work uses surfactant to disperse multi-walled carbon nanotubes (MWCNTs)\, then utilizes photothermal heating of the MWCNTs to remove inter-particle material to enhance the conductivity. We will also present work on water vapor formation in hydrogels. Hydrogels have been studied as a driver in water purification processes and we propose using photothermal heating of nanoparticles to aid in water recovery step of these processes. We photothermally heat a sodium acrylate and N-isopropylamide hybrid embedded with gold and melanin nanoparticles and show changes in water vapor output efficiency when compared to traditional oven heating. We further investigate the photothermal capabilities of melanin nanoparticles as a biologically compatible photothermal heater. These findings utilize the same fundamental mechanism- photothermal heating- to offer potential improvements for industrial and humanitarian efforts alike.
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-erin-crites/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240919T120000
DTEND;TZID=America/New_York:20240919T130000
DTSTAMP:20260425T100928
CREATED:20240830T173149Z
LAST-MODIFIED:20240913T130149Z
UID:51440-1726747200-1726750800@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Amy Maddox
DESCRIPTION:Title: Connecting Molecules and Forces with Rings and Loops \nAbstract: Animal cell shape is dictated by the actomyosin cytoskeleton\, including the membrane-apposed cortex. The molecular parts list of the cortex is well-characterized\, and included the dynamic F-actin polymers\, myosin family motor proteins\, and myriad non-motor crosslinkers that scaffold the cytoskeleton\, the membrane\, and regulatory proteins. It is less well-understood how the cytoskeleton is arranged and re-arranged to generate the forces that establish and change cell shape. We use the highly dynamic cytokinetic ring and the dynamically stable cortex of a germline syncytium as models for the actomyosin cytoskeleton. We use C. elegans as a fast\, small\, cheap\, optically clear\, and accessible model organism for these and other studies. We measure the kinetics of cell shape change and protein enrichment\, in control cells and those depleted by RNAi of target proteins. Via collaborations\, we use various mathematical modeling approaches in which the actomyosin cytoskeleton is approximated as an active gel. We use measurements to constrain our models\, and compare in vivo measurements to model outputs to test our model assumptions. Our multidisciplinary work makes testable predictions about cytoskeletal organization and remodeling\, the magnitude of forces\, and conserved proteins’ roles.
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-amy-maddox/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar,In The Department
ORGANIZER;CN="Julio Monti Belmonte":MAILTO:jbelmon2@ncsu.edu
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240916T160000
DTEND;TZID=America/New_York:20240916T170000
DTSTAMP:20260425T100928
CREATED:20240717T151834Z
LAST-MODIFIED:20240717T151834Z
UID:51249-1726502400-1726506000@physics.sciences.ncsu.edu
SUMMARY:RPT Colloquium: Sebastian König
DESCRIPTION:Title and Abstract details are forthcoming. \n 
URL:https://physics.sciences.ncsu.edu/event/rpt-colloquium-sebastian-konig/
LOCATION:Riddick 301\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20240916T130000
DTEND;TZID=America/New_York:20240916T143000
DTSTAMP:20260425T100928
CREATED:20240911T163129Z
LAST-MODIFIED:20240911T163300Z
UID:51468-1726491600-1726497000@physics.sciences.ncsu.edu
SUMMARY:Preliminary Exam - Canberk Guvendik
DESCRIPTION:Gauge theory on Noncommutative Torus
URL:https://physics.sciences.ncsu.edu/event/preliminary-exam-canberk-guvendik/
LOCATION:Riddick 202 (Grad Suite conference room)
CATEGORIES:In The Department
END:VEVENT
END:VCALENDAR