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X-ORIGINAL-URL:https://physics.sciences.ncsu.edu
X-WR-CALDESC:Events for Department of Physics and Astronomy
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BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250908T160000
DTEND;TZID=America/New_York:20250908T170000
DTSTAMP:20250904T142902Z
CREATED:20250617T171216Z
LAST-MODIFIED:20250904T142902Z
UID:52220-1757347200-1757350800@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Matthew Green
DESCRIPTION:Title: COHERENT Elastic Neutrino-Nucleus Scattering at the SNS \nAbstract: \nCoherent Elastic Neutrino-Nucleus Scattering (CEvNS) is a low-energy neutrino scattering process predicted as a consequence of the weak neutral current in 1974. \nDespite the theoretically-understood\, relatively large cross-section\, until recently the process remained undetected due to the daunting technical challenges involved (low-threshold nuclear recoil detection\, intense neutrino sources / large target masses\, and low backgrounds). The COHERENT Collaboration formed with the aim to measure CEvNS and to use it as a tool to search for physics beyond the standard model by employing state-of-the-art detector technology at Oak Ridge National Laboratory’s (ORNL) Spallation Neutron Source (SNS). In August 2017 COHERENT reported the first-ever observation of CEvNS in a CSI[Na] scintillation detector; this measurement has been followed by subsequent measurements in a liquid argon scintillation detector and in an array of germanium semiconductor detectors. Matthew Green has led COHERENT’s efforts to measure CEvNS in high-purity germanium (HPGe) detectors. This talk will give an overview of the CEvNS process\, the physics capabilities of CEvNS searches\, and an update on COHERENT’s CEvNS measurement efforts.
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-matthew-green/
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250915T160000
DTEND;TZID=America/New_York:20250915T170000
DTSTAMP:20250819T231730Z
CREATED:20250819T231730Z
LAST-MODIFIED:20250819T231730Z
UID:52342-1757952000-1757955600@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Qing Gu
DESCRIPTION:Qing Gu\, NCSU Electrical and Computer Engineering and Physics \nTitle: Luminescent photonic metamaterials and devices from THz to optical frequencies \nAbstract: \nA crucial yet unavailable component in high-performance photonic integrated circuits (ICs) and other chip-scale photonic systems is an on-chip light source that is efficient\, functional\, IC-compatible\, and electronically addressable. In this talk\, I will cover several types of on-chip sources\, including perovskite microlasers and luminescent hyperbolic metamaterials\, topologically protected microlasers and fast nanoLEDs on the III-V platform\, as well as spintronic THz emitters on the III-N platform. I will also discuss emerging applications of these metamaterials and devices\, such as chip-scale atom cooling and trapping\, quantum sensing\, and photonic neuromorphic computing.
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-qing-gu/
LOCATION:Riddick 325\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250918T120000
DTEND;TZID=America/New_York:20250918T130000
DTSTAMP:20250728T151447Z
CREATED:20241008T202053Z
LAST-MODIFIED:20250728T151447Z
UID:51542-1758196800-1758200400@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Chrystal Starbird
DESCRIPTION:Title: Investigating Multimodal Activation of Cellular Signaling Pathways Through Lipids \nAbstract: Key signaling molecules\, receptor tyrosine kinases (RTKs) are a clinically important family of receptors that act as key regulators of a wide range of biological functions and as such\, play a role in the development of various diseases. All RTKs are membrane proteins that share a single-pass transmembrane helix that links and extracellular domain with an intracellular kinase domain. Structurally\, how a single helix promotes the large diversity of signaling processes mediated by RTKs has long been a question of interest\, and classically\, RTKs are considered to be activated by ligand-induced dimerization. However\, in recent years it has become clear that RTKs utilize a wide variety of mechanisms to promote activation and signaling and a subfamily of RTKs\, TAM receptors\, appear to have unique requirements for activation and offer a great system to study some of these alternative mechanisms. Preliminary data from my lab suggests that TAM receptors are capable of forming ligand-independent dimers and may form high order oligomers\, or clusters\, during activation that are driven by interactions with membrane lipids. My lab works to gain new insights from cellular and structural studies into the dependence of TAM receptors on the membrane lipid\, phosphatidylserine\, in the activation of TAM receptors and other important drivers of cellular phagocytosis during signaling. \nHost: Christa Baker
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-chrystal-starbird/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250925T120000
DTEND;TZID=America/New_York:20250925T130000
DTSTAMP:20250904T170018Z
CREATED:20250904T165945Z
LAST-MODIFIED:20250904T170018Z
UID:52488-1758801600-1758805200@physics.sciences.ncsu.edu
SUMMARY:CMB Seminar: Nathan Ennist
DESCRIPTION:Title:  Engineering new proteins for enhanced photosynthesis \nAbstract: Plants\, green algae\, and cyanobacteria power the biosphere using oxygenic photosynthesis to oxidize water to oxygen and liberate high-energy electrons for carbon fixation.  Despite its evolutionary success\, oxygenic photosynthesis has a low overall efficiency.  It fails to make use of the abundant energy in the near-infrared region of the solar spectrum\, and it loses energy to thermalization and inefficient charge separation.   We leverage recent developments in AI methods for protein design such as AlphaFold\, RFdiffusion\, and ProteinMPNN to engineer new high-efficiency photosystems that control light-activated electron tunneling\, use excitonic coupling to tune spectroscopic properties of chromophores\, assemble novel metal clusters\, and catalyze redox reactions.  We characterize the designs using spectroscopy\, electrochemistry\, cryo-electron microscopy\, and X-ray crystallography.  This research project may lead to enhanced photosynthesis for improved production of renewable solar fuels\, sustainable ammonia for fertilizer\, and faster-growing crops for food.
URL:https://physics.sciences.ncsu.edu/event/cmb-seminar-nathan-ennist/
LOCATION:Bureau of Mines 201
CATEGORIES:CMB Seminar,In The Department
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/New_York:20250929T160000
DTEND;TZID=America/New_York:20250929T170000
DTSTAMP:20250819T232000Z
CREATED:20250819T232000Z
LAST-MODIFIED:20250819T232000Z
UID:52344-1759161600-1759165200@physics.sciences.ncsu.edu
SUMMARY:Physics Colloquium: Igor Andreoni
DESCRIPTION:Igor Andreoni\, UNC Chapel Hill \nTitle and Abstract details are forthcoming
URL:https://physics.sciences.ncsu.edu/event/physics-colloquium-igor-andreoni/
LOCATION:Riddick 325\, 2401 Stinson Drive\, Raleigh\, NC\, 27695\, United States
CATEGORIES:Colloquia
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