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X-WR-CALNAME:Physics & Astronomy
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DTSTART;TZID=America/Chicago:20241122T153000
DTEND;TZID=America/Chicago:20241122T170000
DTSTAMP:20260617T201128
CREATED:20241119T202729Z
LAST-MODIFIED:20241119T202729Z
UID:10435340-1732289400-1732294800@uwm.edu
SUMMARY:Physics Colloquium - Dr. Joshua "Shua" Sanchez
DESCRIPTION:Dr. Joshua “Shua” Sanchez\, Postdoctoral Fellow\, Department of Physics\, MIT \nQuantum Criticality and Magnetic Field-Induced Superconductivity \nWhen electrons have strong interactions with each other\, new quantum phases of matter emerge\, such as magnetism\, nematicity\, charge order\, and superconductivity. In these “Quantum Materials”\, the microscopic interactions can be very difficult to probe and understand\, yet they give rise to macroscopic properties that are easier to study and can be harnessed for new technologies. \nIn this talk\, I will demonstrate how synchrotron x-ray techniques can be powerful probes to study the mysterious origin of strongly-correlated phases. I will discuss several recent projects at the Advanced Photon Source at Argonne National Laboratory\, using a novel sample characterization platform that simultaneously combines x-rays\, in-situ structural tuning\, applied magnetic field\, and electrical transport measurements. Our work yields new insights on two broad questions in high-temperature iron-based superconductors. (1) How does quantum criticality and nematicity relate to unconventional superconductivity? and (2) How can ferromagnetism and superconductivity coexist in one material\, and how do they affect each other? \nReferences:\n(1) Sanchez\, et al. Nature Materials 20\, 1519–1524 (2021)\n(2) Sanchez\, et al. Science Advances 9\, eadj5200 (2023) \nThe event flyer is available here.
URL:https://uwm.edu/physics/event/physics-colloquium-dr-joshua-shua-sanchez/
LOCATION:Chemistry 108\, 2050 E Kenwood Blvd\, Milwaukee\, WI\, 53201\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20211029T140000
DTEND;TZID=America/Chicago:20211029T153000
DTSTAMP:20260617T201128
CREATED:20200303T174247Z
LAST-MODIFIED:20211015T151452Z
UID:10390516-1635516000-1635521400@uwm.edu
SUMMARY:Physics Colloquium - Mark Williamsen
DESCRIPTION:Mark Williamsen\, Quantum Design\, Inc \nApplications of AC Bridges in Cryogenic Measurements \nAC (alternating current) bridges have proven to be useful in making precise measurements at low temperature\, including thermometry as well as length change with respect to either thermal expansion (dilatometry) or applied magnetic field (magnetostriction).  Techniques now in use allow one leg of the bridge to be placed at the cryogenic sample site while the other legs remain at room temperature\, with the intervening temperature gradient being imposed along a length of coaxial cable.  Using this method\, length change measurements at atomic scale have recently been used to study a hidden order phase in the heavy fermion system URu2Si2.  Plans are now underway to apply this sensitive measurement to a variety of single crystal and polycrystalline samples. \nRelevant citing:   S. Ran\, G. M. Schmiedeshoff\, N. Pouse\, I. Jeon\, N. P. Butch\, R. B. Adhikari\, C. C. Almasan &  M. B. Maple; “Rapid suppression of the energy gap and the possibility of a gapless hidden order state in URu2−xRexSi2\,”  Philosophical Magazine\, 99:14\, 1751-1762\, DOI: 10.1080/14786435.2019.1600756 (2019). \nThe event flyer is available here.
URL:https://uwm.edu/physics/event/physics-colloquium-mark-williamsen/
LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0754962;-87.8839451
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200508T153000
DTEND;TZID=America/Chicago:20200508T163000
DTSTAMP:20260617T201128
CREATED:20200303T174053Z
LAST-MODIFIED:20200326T163253Z
UID:10390513-1588951800-1588955400@uwm.edu
SUMMARY:Michelle Larson: Postponed Until AY 2020/2021
DESCRIPTION:Michelle Larson\, Adler Planetarium \nTitle and abstract TBA
URL:https://uwm.edu/physics/event/physics-colloquium-michelle-larson/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200501T153000
DTEND;TZID=America/Chicago:20200501T163000
DTSTAMP:20260617T201128
CREATED:20200217T144849Z
LAST-MODIFIED:20200326T163335Z
UID:10388512-1588347000-1588350600@uwm.edu
SUMMARY:Ionel Popa: Postponed Until Fall 2020
DESCRIPTION:Ionel Popa\, UWM Physics Faculty \nTitle and abstract TBA
URL:https://uwm.edu/physics/event/physics-colloquium-ionel-popa/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200403T153000
DTEND;TZID=America/Chicago:20200403T163000
DTSTAMP:20260617T201128
CREATED:20200217T144606Z
LAST-MODIFIED:20230120T120650Z
UID:10387510-1585927800-1585931400@uwm.edu
SUMMARY:Physics PhD Colloquium - Deep Chatterjee
DESCRIPTION:Deep Chatterjee\, University of Wisconsin-Milwaukee PhD Candidate \nTitle and abstract TBA
URL:https://uwm.edu/physics/event/physics-phd-colloquium-deep-chatterjee/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200306T153000
DTEND;TZID=America/Chicago:20200306T163000
DTSTAMP:20260617T201128
CREATED:20200210T220750Z
LAST-MODIFIED:20200210T220750Z
UID:10386508-1583508600-1583512200@uwm.edu
SUMMARY:Physics Colloquium - Wynn Ho
DESCRIPTION:Wynn Ho\, Haverford College \nThe Impact of Pulsar Glitches and NICER on Gravitational Wave Searches \nPulsars are the rotating remnant of massive stars and are unique probes of dense matter physics.   They are famous for having very precisely measured spin rates\, and this spin evolves extremely regularly for most pulsars.  However\, young pulsars can occasionally undergo sudden spin changes\, known as glitches.   \nIn this talk\, I will introduce pulsar glitches and the superfluidity model of a glitch. I will then discuss how currently detected gravitational wave transients might be due to a stellar oscillation in glitching pulsars.  Finally\, I will describe the NICER mission on the International Space Station and its important role in enabling gravitational wave searches through tracking the spin of young\, glitching pulsars. \nEvent flyer is available here
URL:https://uwm.edu/physics/event/physics-colloquium-wynn-ho/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200228T153000
DTEND;TZID=America/Chicago:20200228T163000
DTSTAMP:20260617T201128
CREATED:20191119T152246Z
LAST-MODIFIED:20200122T150008Z
UID:10384506-1582903800-1582907400@uwm.edu
SUMMARY:Physics Colloquium - Gregory Rudnick
DESCRIPTION:Gregory Rudnick\, University of Kansas \nThe Life Cycle of Galaxies in Clusters Over 10 Billion Years \nGalaxies live in a range of environments\, characterized by their volume density. For example\, the densest regions of the Universe are in galaxy clusters\, which contain hundreds to thousands of galaxies all in pseudo gravitational virial equilibrium. These dense environments can in turn alter the properties of the galaxies themselves in striking ways via a variety of gravitational and hydrodynamic processes. The result of these processes alter galaxy shapes\, their internal dynamics\, and shuts off the formation of new stars. I will present work I have been doing to characterize the evolution of galaxies in clusters over the past 10 billion years as a way of understanding how the environment can affect galaxies.  \nI will describe how we have used extensive multi-wavelength data sets on distant clusters to form a picture in which infalling cluster galaxies likely have their gas supplies cut off\, their morphologies transformed\, and may even experience epochs of very frequent mergers.  I will then describe new results from a large program called Gemini Observations of Galaxies in Rich Environments (GOGREEN) which is the premier spectroscopic survey of distant clusters.  With the GOGREEN data\, we are finding that the quenching of galaxies in dense environments at high redshift may proceed very differently from that at redshifts less than one\, requiring a revision of our thoughts on how environment affects galaxy evolution at large lookback times. \nEvent flyer available here.
URL:https://uwm.edu/physics/event/physics-colloquium-greg-rudnick/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200228T140000
DTEND;TZID=America/Chicago:20200228T150000
DTSTAMP:20260617T201128
CREATED:20200225T153653Z
LAST-MODIFIED:20200225T153653Z
UID:10390512-1582898400-1582902000@uwm.edu
SUMMARY:Math and Physics Joint Colloquium - Dr. Tomáš Bzdušek
DESCRIPTION:Dr. Tomáš Bzdušek\, Paul Scherrer Institute and University of Zurich \nMathematics of Topological Insulators and Semimetals \nMany properties of crystalline materials\, such as conductivity or the tendency to become magnetically ordered at low temperatures\, derive from their so-called “electronic band structure.” Although this is an established notion in solid state physics\, dating back to the early days of quantum mechanics\, our understanding of electronic band structure has been greatly challenged and revolutionized over the past 15 years by the discovery of so-called topological materials. \nIn this colloquium\, I will first show how topology enters the description of electrons in crystalline solids – whether they are insulators\, semimetals or metals. This is achieved by encoding the electron Hamiltonian as a fiber bundle\, and by characterizing this bundle using homotopy theory. In the second part\, I will focus on our latest results\, which reveal a previously overlooked non-Abelian topological invariant. This discovery suggests possible braiding phenomena in the electronic band structure\, which I illustrate on a material example ZrTe. \nColloquium flyer available here
URL:https://uwm.edu/physics/event/math-and-physics-joint-colloquium-dr-tomas-bzdusek/
LOCATION:EMS E495\, 3200 North Cramer Street\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20200131T153000
DTEND;TZID=America/Chicago:20200131T163000
DTSTAMP:20260617T201128
CREATED:20191119T152055Z
LAST-MODIFIED:20200122T145806Z
UID:10384504-1580484600-1580488200@uwm.edu
SUMMARY:Physics Colloquium - Andrew Ferguson
DESCRIPTION:Andrew Ferguson\, University of Chicago \nReconstructing All-Atom Protein Folding from Low-Dimensional Experimental Time Series \nData-driven modeling and machine learning present powerful tools that are opening up new paradigms and opportunities in the understanding\, discovery\, and design of soft and biological materials.  In the first part of this talk\, I will describe an approach integrating ideas from dynamical systems theory and nonlinear manifold learning to reconstruct multidimensional protein folding funnels from the time evolution of single experimentally measurable observables. In the second part of this talk\, I will describe our use of deep learning to estimate slow collective variables from molecular simulation trajectories and the use of these coordinates to train highly efficient latent space molecular simulators. By combining these two ideas it is possible to reconstruct all-atom molecular configurations from one-dimensional time series in experimentally measurable observables. \nEvent flyer is available here
URL:https://uwm.edu/physics/event/physics-colloquium-andrew-ferguson/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191206T153000
DTEND;TZID=America/Chicago:20191206T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191127T171451Z
UID:10384500-1575646200-1575649800@uwm.edu
SUMMARY:Physics Colloquium - Chuck Steidel
DESCRIPTION:Chuck Steidel\, Caltech \nImaging the “Baryon Cycle” of Forming Galaxies \nThe rapid increase in the universal star formation density between z~6 and z~2 (12.5-10.5 Gyr ago) was driven by high rates of accretion onto galaxy-scale dark matter halos\, but was simultaneously modulated by energetic feedback from massive stars\, supernovae\, and AGN activity whose large-scale effects remain uncertain.  The competition between rapid accretion from the intergalactic medium and outflows driven by sources of energy and momentum originating near a galaxy’s center is arguably the least well-understood aspect of the current galaxy formation paradigm. But the “battleground” for the competition is the so-called “circumgalactic medium” (CGM)\, a large (200-300 kpc) reservoir of diffuse\, multi-phase gas whose temperature\, density\, metal content\, and kinematics are uniquely sensitive to accreting or outflowing baryons on scales beyond that of the central galaxy.  \nAfter an overview of our current understanding of the CGM surrounding high redshift galaxies\, I will present new observations (and some preliminary interpretation) using extremely deep imaging spectroscopy with the recently-commissioned “Keck Cosmic Web Imager” (KCWI).  KCWI provides continuous\, spatially-resolved maps — with unprecedented sensitivity – of diagnostic emission and absorption lines on transverse scales of 1->200 Kpc arising from circumgalactic gas around forming galaxies at z~2-3. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-12-06/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20191129
DTEND;VALUE=DATE:20191130
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20190923T142230Z
UID:10384498-1574985600-1575071999@uwm.edu
SUMMARY:No Physics Colloquium - Thanksgiving Break
DESCRIPTION:No Physics Colloquium this week due to the Thanksgiving holiday.
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-11-29/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191122T153000
DTEND;TZID=America/Chicago:20191122T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191111T152626Z
UID:10384496-1574436600-1574440200@uwm.edu
SUMMARY:Physics Colloquium - Peter M. Hoffmann
DESCRIPTION:Peter M. Hoffmann Wayne State University \nThe Physics of Life: Molecular Machines \nLiving beings are based on nanoscale machinery. This is no accident: the nanoscale is the only length scale at which autonomous\, self-constructing machinery is possible. Only at this scale do thermal\, electrical\, chemical and mechanical energy scales converge. Moreover\, this scale is dominated by thermal chaos. These unique circumstances give nanoscale systems the ability to easily transform different types of energy into each other and to self-assemble into ordered structures. Although living cells have taken advantage of the physics of the nanoscale for billions of years\, technology is just beginning to exploit the very different rules governing this scale. \nIn this talk\, I will give examples from the mechanical behavior of nanoconfined liquids and the mechanics of single molecules\, but the talk will focus on the story of molecular machines\, which connect physics to biology and illustrate how life is a game played at the nanoscale. At this tiny scale\, thermal noise meets molecular structure and chaos becomes order. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-09-13-2019-11-22/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191115T153000
DTEND;TZID=America/Chicago:20191115T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191104T162711Z
UID:10384494-1573831800-1573835400@uwm.edu
SUMMARY:Physics Colloquium - Kristy McQuinn
DESCRIPTION:Kristy McQuinn\, Rutgers University \nThe Baryon Cycle in the Smallest of Star-Forming Galaxies \nOur view of galaxy evolution has expanded to include not just the evolution of individual galaxy components (gas\, stars\, chemical elements)\, but the cyclical interplay of a galaxy with its surroundings. Frequently termed the ‘baryon cycle’\, the galaxy evolution framework now includes: how gas is accreted onto galaxies\, turned in stars\, ejected out of galaxies via energetic feedback processes\, and potentially re-accreted. The impact of the baryon cycle is amplified in the shallow potential wells of the smallest of star-forming galaxies. This is born out in cosmological simulations of the universe where low mass galaxies act as boundary conditions to structure formation and provide stringent tests of baryon and dark matter physics.  \nIn this talk\, I will present observational results on the baryon cycle in low mass galaxies and discuss where we find (dis)agreement between real galaxies and predictions from state-of-art cosmological simulations. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-11-15/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191108T153000
DTEND;TZID=America/Chicago:20191108T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191105T145044Z
UID:10384492-1573227000-1573230600@uwm.edu
SUMMARY:Physics Colloquium - Dr. Chris Williams
DESCRIPTION:Dr. Chris Williams\, Brigham & Women’s Hospital \nMRI-Guided Adaptive Radiation Therapy: Improving Precision in Cancer Therapy \nRadiation therapy treatments have traditionally used x-ray imaging to ensure that a patient is accurately positioned before treating them with a beam of ionizing radiation.  In the past several years\, new treatment machines have been developed that combine magnetic resonance imaging (MRI) systems with linear accelerators\, enabling MRI-guidance before and during treatment delivery.  These devices have the potential to improve our ability to visualize and treat soft-tissue tumors as well as to compensate for motion and changes in a patient’s anatomy.   \nThis talk will discuss the technical aspects and clinical rationale of these machines as well as early results and the role of medical physicists in implementing an MRI-guided radiotherapy program. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-11-08/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191025T153000
DTEND;TZID=America/Chicago:20191025T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191017T163934Z
UID:10384490-1572017400-1572021000@uwm.edu
SUMMARY:Physics Colloquium - Dr. Neil Turok
DESCRIPTION:Dr. Neil Turok\, Director Emeritus; Perimeter Institute \nQuantum Universe \nObservations show the cosmos to be astonishingly simple\, and yet deeply puzzling\, on the largest accessible scales.  How did everything we see emerge from a singular “point” in the past?   Why is there a cosmological constant (or dark energy) and what fixes its value?  What caused the density variations  which seeded the formation of galaxies?  All these questions involve the interplay between quantum mechanics and spacetime. New ideas and mathematical techniques for studying quantum dynamics are allowing us to identify problems with existing cosmological models and to explore new explanations. The CPT symmetric universe\, in particular\, offers a surprisingly simple explanation for the cosmological dark matter. The same calculational techniques have wide application in various fields\, including radioastronomy\, where there are prospects of using the whole universe as a fundamental physics laboratory of unequalled range and precision.  \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-10-25/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191024T143000
DTEND;TZID=America/Chicago:20191024T153000
DTSTAMP:20260617T201128
CREATED:20190827T143820Z
LAST-MODIFIED:20191016T171808Z
UID:10384502-1571927400-1571931000@uwm.edu
SUMMARY:IEEE/Physics Colloquium - Professor Hari Srikanth
DESCRIPTION:Professor Hari Srikanth\, Dept. of Physics – Univ. of South Florida & 2019 IEEE Magnetic Society Distinguished Lecturer \nTuning Magnetic Anisotropy in Nanostructures for Biomedical Applications \nMagnetic nanoparticles have been building blocks in applications ranging from high density recording to spintronics and nanomedicine.  Magnetic anisotropies in nanoparticles arising from surfaces\, shapes and interfaces in hybrid structures are important in determining the functional response in various applications.  In this talk\, I will first introduce the basic aspects of anisotropy\, how to tune it in nanostructures and ways to measure it.  I will discuss resonant RF transverse susceptibility\, that we have used extensively\, as a powerful method to probe the effective anisotropy in magnetic materials. Tuning anisotropy has a direct impact on the performance of functional magnetic nanoparticles in biomedical applications such as contrast enhancement in MRI and magnetic hyperthermia cancer therapy. There is a need to improve the specific absorption rate (SAR) or heating efficiency of nanoparticles for hyperthermia and I will focus on the role of tuning surface and interfacial anisotropy with a goal to enhance SAR. Strategies going beyond simple spherical structures such as exchange coupled core-shell nanoparticles\, nanowire\, nanotube geometries can be exploited to increase saturation magnetization\, effective anisotropy and heating efficiency in magnetic hyperthermia. This lecture will combine insights into fundamental physics of magnetic nanostructures along with recent research advances in their application in nanomedicine. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-hari-srikanth/
LOCATION:KIRC 1150\, 3135 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0754962;-87.8839451
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=KIRC 1150 3135 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3135 N. Maryland Ave.:geo:-87.8839451,43.0754962
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191018T153000
DTEND;TZID=America/Chicago:20191018T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191016T124947Z
UID:10383473-1571412600-1571416200@uwm.edu
SUMMARY:No Physics Colloquium This Week
DESCRIPTION:There is no scheduled Physics Colloquium for Friday\, October 18 2019.
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-09-13-2019-10-18/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191011T153000
DTEND;TZID=America/Chicago:20191011T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20191008T141202Z
UID:10382471-1570807800-1570811400@uwm.edu
SUMMARY:Physics Colloquium - Dan Milisavljevic
DESCRIPTION:Dan Milisavljevic\, Purdue University \nMulti-messenger Autopsies of Stellar Death \nThe expanding zoo of astronomical transients has become one of the most important driving forces of scientific discovery in extreme astrophysics. Increasingly sophisticated all-sky surveys are uncovering unexpected phenomena that are forcing radical revisions to long accepted models of massive star evolution and their compact remnant objects. These discoveries\, which will increase by orders of magnitude in the upcoming decade\, are shaping the priorities of the next generation of science facilities such as the Large Synoptic Survey Telescope and Extremely Large Telescopes. \nI will review how radio-through-X-ray investigations of transients are revolutionizing our understanding of stellar death and its myriad impacts. This includes the terminal and often dramatic evolutionary phases massive stars pass though when approaching core collapse; the physical mechanisms behind the subsequent supernova explosion; and the formation of powerful compact objects that can participate in the explosion dynamics. I will also discuss how the new synergy between electromagnetic\, neutrino\, and gravitational wave facilities can enable transformative progress towards finally solving the enigma of core collapse by accurately interpreting the multi-messenger signals from the next Galactic supernova. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-10-11/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20191004T153000
DTEND;TZID=America/Chicago:20191004T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20190923T180537Z
UID:10381466-1570203000-1570206600@uwm.edu
SUMMARY:Physics Colloquium - Dr. Narae Kang
DESCRIPTION:Dr. Narae Kang\, Intel Corp. \nDesign\, Fabrication\, and Characterization of Nanoelectronic Devices: From Carbon Nanotubes to Graphene\, and Beyond \nFabrication of high-performance electronic devices using novel semiconductors is essential for developing future electronics applications such as large-area\, flexible and transparent displays\, sensors and solar cells. In the first part of my talk\, I will discuss the fabrication of nanoelectronic devices and investigation of their transport properties using carbon nanotubes (CNTs) and graphene as electrode materials. I investigated two types of devices using (i) semiconducting CNTs\, and (ii) organic semiconductors. The study suggests that\, in addition to strong π- π interaction at graphene/pentacene interface\, the tunable electronic properties of graphene as electrode have a significant role in the device performance. For a fundamental understanding of the interface\, short-channel OFETs with sub-100nm channel length were fabricated using graphene electrode. From the low temperature electronic transport measurements\, a lower charge injection barrier was found from the devices with graphene electrode. This investigation suggested that the use of carbon-based materials as electrodes can enhance the performance of future nanoelectronic devices. In the second part of my talk\, I will discuss the recent interesting findings from the research in tailoring the properties of layered two-dimensional transition metal dichalcogenides (TMDC) via controlled defect engineering. Due to the large intrinsic bandgap\, TMDC materials have emerged as promising candidates for the 2D device engineering. \nEvent flyer download here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-09-13-2019-09-27/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190927T153000
DTEND;TZID=America/Chicago:20190927T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20190923T180729Z
UID:10382469-1569598200-1569601800@uwm.edu
SUMMARY:No Physics Colloquium This Week
DESCRIPTION:No colloquium this week – Dr. Narae Kang has been rescheduled for 4 October 2019.
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-09-13-2019-10-04/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190920T153000
DTEND;TZID=America/Chicago:20190920T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20190909T142251Z
UID:10381464-1568993400-1568997000@uwm.edu
SUMMARY:Physics Colloquium - Mark C. Williams
DESCRIPTION:Mark C. Williams\, Northeastern University \nHow Proteins Use Thermodynamics to Fight Over DNA \nOptical tweezers allow us to probe the interactions of proteins with single DNA molecules and apply very small forces.  Measurement of force-dependent DNA conformations allows us to quantify interactions that govern cellular function.  DNA forms a stable double-helix in order to store the genetic information for most organisms.  However\, in the process of replicating an organism’s genome\, the two strands of the helix must be separated to form single-stranded DNA (ssDNA).  This intermediate state is vulnerable to interference from many cellular processes and is therefore tightly regulated.  \nI will discuss how the protein SSB from the model bacterium E. coli uses a complex and dynamic wrapping mechanism to control access to ssDNA during normal replication.  I will then describe a protein in human cells (APOBEC3G) that occupies and/or modifies ssDNA that is formed during retroviral replication\, helping to confer immunity to HIV under some conditions.  APOBEC3G uses multiple biophysical and biochemical mechanisms to inhibit viral replication and induce viral mutations\, which we dissect using single molecule methods.  The results demonstrate complex biophysical mechanisms that regulate ssDNA access across a range of organisms and cell types. \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-09-20/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190906T153000
DTEND;TZID=America/Chicago:20190906T163000
DTSTAMP:20260617T201128
CREATED:20190827T143041Z
LAST-MODIFIED:20190913T181115Z
UID:10381463-1567783800-1567787400@uwm.edu
SUMMARY:Physics Colloquium - Andrew Baker
DESCRIPTION:Andrew Baker\, Rutgers University \nDusty Star-Forming Galaxies at High Redshift\nInterstellar dust grains can collectively scatter\, redden\, and attenuate the light from a galaxy’s stars– in some cases\, so effectively that a galaxy can become nearly undetectable at rest-frame ultraviolet and optical wavelengths.  Starting in the late 1990s\, astronomers have come to understand that luminous but optically obscured systems are much more prevalent at high redshifts (i.e.\, earlier times) than in the local universe\, and that they make important contributions to the overall history of cosmic star formation.  Progress in understanding the demographics and internal properties of these “dusty star-forming galaxies” (DSFGs) has been impeded by their high obscuration\, but radio telescopes are capable of seeing through the dust and probing the reservoirs of cold interstellar gas that power DSFGs’ star formation.   \nI will discuss recent observational results on the redshift distributions\, evolutionary states\, and detailed internal properties of DSFGs\, along with what we can learn from gravitationally lensed DSFGs about intervening mass distributions along the line of sight. \nEvent flyer available here
URL:https://uwm.edu/physics/event/bakerrutgers09062019/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190725T143000
DTEND;TZID=America/Chicago:20190725T153000
DTSTAMP:20260617T201128
CREATED:20190723T201730Z
LAST-MODIFIED:20190723T201730Z
UID:10381461-1564065000-1564068600@uwm.edu
SUMMARY:Physics Colloquium - Goutam Sheet
DESCRIPTION:Goutam Sheet\, Dept. of Physical Sciences\, Indian Institute of Science Education & Research (IISER) \nTip-induced Superconductivity \nIt has been recently observed that certain novel phases of matter\, like superconductivity\, emerge at mesoscopic interfaces between elemental metals and topologically nontrivial systems such as topological insulators and topological Dirac and Weyl semimetals. In this talk\, I will review some of our published results on such mesoscopic superconducting phases with special emphasis on tip-induced superconductivity (TISC). A TISC phase is known to emerge under the point of contact between a sharp tip of a (non-superconducting) normal metal and a material with topologically non-trivial band structure.  Since the superconducting volume fraction in a TISC is extremely small\, traditional bulk characterization tools such as regular transport and magnetization measurements fail to detect such a phase. I will highlight how probing Andreev reflection at such mesoscopic point contacts (a quantum process through which a normal current is converted into a supercurrent in a normal metal-superconductor interface) can be help us detect and understand the fundamental physics of TISC.  \nReferences\n[1]   L.  Aggarwal\, A. Gaurav\, G. S. Thakur\, Z. Haque\, A. K Ganguli and G. Sheet\, Nature materials 15\, 32 (2016).\n[2]   L. Aggarwal\, S. Gayen\, S. Das\, R. Kumar\, V. Süß\, C. Felser\, C. Shekhar and G. Sheet\, Nature Communications 8\, 13974 (2017)\n[3]   S. Das\, L. Aggarwal\, S. Roychowdhury\, M. Aslam\, S. Gayen\, K. Biswas and G. Sheet\, Applied physics Letters 109\, 13 (2016). \nEvent flyer available here
URL:https://uwm.edu/physics/event/physics-colloquium-goutam-sheet/
LOCATION:Lubar Hall S 230\, 3202 N Maryland Ave\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
END:VEVENT
BEGIN:VEVENT
DTSTART;VALUE=DATE:20190510
DTEND;VALUE=DATE:20190511
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190506T134341Z
UID:10381459-1557446400-1557532799@uwm.edu
SUMMARY:No Physics Colloquium
DESCRIPTION:There is no Physics colloquium scheduled due to upcoming final exams. Best of luck to all Physics majors and graduate students!
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-05-10/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190503T153000
DTEND;TZID=America/Chicago:20190503T163000
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190430T142942Z
UID:10381456-1556897400-1556901000@uwm.edu
SUMMARY:Physics Colloquium - Daniel J. Kennefick
DESCRIPTION:Daniel J. Kennefick\, University of Arkansas \nNo Shadow of Doubt: The 1919 Eclipse and General Relativity \nThis is the centenary year of the celebrated eclipse expeditions of 1919 which confirmed Einstein’s theory of General Relativity.  In recent decades\, the story of these expeditions has focused on Arthur Stanley Eddington and the question of his alleged bias in favor of Einstein’s theory.  It has been alleged that Eddington threw out data which did not favor Einstein’s theory.  Meticulous examination of the expeditions’ papers reveals that this view is mistaken.  The relevant data was taken by the expedition organized by the Greenwich observatory and it was the director of that observatory\, the Astronomer Royal\, Frank Watson Dyson\, who was responsible for the decisions in question.  Studies of the data analysis sheets and comparison with modern re-analysis of the original plates vindicate his decision.  \nThe story of the two expeditions is a remarkable one and this talk will examine the people\, the instruments\, and the science of the teams and how their work changed science forever.  \nEvent flyer available here
URL:https://uwm.edu/physics/event/pqkennefick050319/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190426T153000
DTEND;TZID=America/Chicago:20190426T163000
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190424T125147Z
UID:10381454-1556292600-1556296200@uwm.edu
SUMMARY:Physics Colloquium - Naomi McClure-Griffiths
DESCRIPTION:Professor Naomi McClure-Griffiths\, Professor at the Research School of Astronomy & Astrophysics in the College of Science – Australian National University \nThe Milky Way and Magellanic Clouds as Laboratories for Understanding the Evolution of Galaxies \nGalaxies are not closed box systems.  Their evolution is impacted by gas accreted via inflow\, gas lost from the disk via large-scale outflows and gas circulations via the halo.  Many simulations of galaxy formation and evolution have highlighted the importance of feedback in reproducing the observable Universe.  In this talk\, I will present an overview of observational evidence for outflows within the Milky Way and Magellanic Clouds.  Superbubbles\, formed from the stellar winds and supernovae of up to hundreds of massive stars\, these large-scale features dominate the observed structure of neutral hydrogen within the many galaxies.  Superbubbles that grow as large as the gas layer can burst to create galactic outflows\, which can circulate hot\, enriched gas within a galaxy’s halo and out of its gravitational potential to enrich the surrounding intergalactic medium.  The Milky Way and Magellanic system have many spectacular examples of gaseous outflows\, which we are able to study with physical resolution unmatched anywhere else in the Universe.    In this talk I will give an overview of how superbubbles develop and break out to form galactic outflows.   I will describe how atomic hydrogen emission data of the nearest galactic systems is helping us to understand how galaxies evolve. \nEvent flyer available here.
URL:https://uwm.edu/physics/event/pqmcclure-griffiths042619/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190419T153000
DTEND;TZID=America/Chicago:20190419T163000
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190415T202512Z
UID:10381450-1555687800-1555691400@uwm.edu
SUMMARY:Physics Colloquium - Piotr E. Marszalek
DESCRIPTION:Piotr E. Marszalek\, Duke University \nNanomechanics of Biopolymers Beyond Their Entropic Elasticity Regime \nCompared to other single-molecule techniques\, AFM-based force spectroscopy uses stiff force transducers and it may apply large stretching forces to molecules\, enabling their structural modifications and capturing high energy conformations that cannot be examined by (for example) X-ray crystallography or NMR. In my talk\, I will present our AFM stretching and relaxation studies\, supported by computer simulations of individual molecules of DNA and proteins. \nWhile differences between the molecular elasticity of single-stranded and double-stranded DNA were directly determined by optical tweezers as early as 1996\, our AFM studies 10 years later captured unexpected similarities between the nanomechanical behavior of single- and double-stranded DNA when they share the same canonical structures\, suggesting a common overstretching mechanism. AFM measurements of large multi-domain proteins\, combined with coarse-grained Steered Molecular Dynamics simulations\, revealed complex unfolding and refolding reactions that do not follow a simple two-state model typically observed for smaller proteins. Taken together\, these studies contribute to elucidating the (still not fully understood) mechanism of folding large proteins in vivo and may be useful in examining the mechanism by which large proteins avoid pathways to unproductive and disease-prone misfolded states. \nEvent flyer available here
URL:https://uwm.edu/physics/event/pqmarszalek041919/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190412T153000
DTEND;TZID=America/Chicago:20190412T163000
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190409T140024Z
UID:10381448-1555083000-1555086600@uwm.edu
SUMMARY:Physics Colloquium - Victor Muñoz
DESCRIPTION:Victor Muñoz\, University of California-Merced \nLessons About Biomolecular Rate Theory from Ultrafast Kinetics and Single-Molecule Spectroscopy of Fast-Folding Proteins \nNatural proteins fold and unfold with rates that define their biological properties and vary vastly from protein to protein.  Understanding how these rates are determined is essential to decipher the mechanisms of protein folding\, but is also a convenient system to explore the fundamental aspects of biomolecular rate theory.  Protein (un)folding rates are described as diffusion on a free energy surface obtained by projecting the protein-solvent hyper-dimensional phase space (or folding energy landscape) onto one or few order parameters that capture the reaction’s progress.  Such description often reduces to Kramers rate theory\, in which the rates depend on the free energy barrier separating the native and unfolded states and a prefactor term that sets the timescale for crossing such barrier or folding speed limit.  A pervasive problem in the field has been the impossibility to extricate these two factors from experimentally measured folding and unfolding rates.  However\, recent work in the biophysical characterization of ultrafast protein folding and technical advances in single-molecule fluorescence and force spectroscopy are providing first direct glimpses of the (un)folding transition paths (the reactive barrier crossing events) undertaken by individual protein molecules and how they connect to the free energy barrier.   \nIn my talk\, I will review some of our recent results in this area that shed new light onto the mechanisms of protein folding and provide useful tests of the applicability of Kramers rate theory to biomolecular processes. \nEvent flyer downloadable here
URL:https://uwm.edu/physics/event/pqmunoz041219/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190405T153000
DTEND;TZID=America/Chicago:20190405T163000
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190401T184311Z
UID:10381446-1554478200-1554481800@uwm.edu
SUMMARY:Physics Colloquium - Aaron Viets
DESCRIPTION:Aaron Viets\, PhD Candidate\, University of Wisconsin-Milwaukee \nOptimizing Advanced LIGO’s Scientific Output with Fast\, Accurate\, Clean Calibration \nFast\, accurate calibration of Advanced LIGO data is an essential part of gravitational-wave astronomy\, necessary for prompt electromagnetic follow-up of gravitational-wave events and reliable estimation of source parameters.    \nI will discuss methods used in both low and high latency to produce the calibrated strain signal h(t).   I will highlight recent improvements that have been made to improve the calibration process during and after the second observing run.  These include the application of frequency-dependent corrections to the calibration using adaptive filters\, reduction in calibration latency\, and the subtraction of excess noise from h(t) in low latency. \nEvent flyer available here.
URL:https://uwm.edu/physics/event/pqviets040519/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
BEGIN:VEVENT
DTSTART;TZID=America/Chicago:20190329T153000
DTEND;TZID=America/Chicago:20190329T163000
DTSTAMP:20260617T201128
CREATED:20190319T180816Z
LAST-MODIFIED:20190326T140532Z
UID:10381444-1553873400-1553877000@uwm.edu
SUMMARY:No Physics Colloquium Scheduled
DESCRIPTION:There is no Physics colloquium currently scheduled for this date.
URL:https://uwm.edu/physics/event/physics-colloquium-to-be-announced-2019-03-29/
LOCATION:Lapham 160\, 3209 N. Maryland Ave.\, Milwaukee\, WI\, 53211\, United States
CATEGORIES:Physics Colloquia
X-TRIBE-STATUS:
GEO:43.0757204;-87.8840564
X-APPLE-STRUCTURED-LOCATION;VALUE=URI;X-ADDRESS=Lapham 160 3209 N. Maryland Ave. Milwaukee WI 53211 United States;X-APPLE-RADIUS=500;X-TITLE=3209 N. Maryland Ave.:geo:-87.8840564,43.0757204
END:VEVENT
END:VCALENDAR