Past Events
Life after JILA speaker series - Ben Brubaker
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Speaker bio: Ben Brubaker is a New York City-based science journalist who covers theoretical computer science as a staff writer for Quanta Magazine. His writing has also appeared in Scientific American, and Physics Today, and elsewhere. He received a Ph.D. in physics from Yale University and conducted postdoctoral research at JILA before moving into science writing.
Reception at 5:30 at the Sink. We'll meet at the hbar at 5:15 to head over.
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Ultraviolet Mars: The Search for More Science
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Abstract: Tremendous new insights into the Martian atmosphere have been achieved in recent years by two ultraviolet spectrographs built at LASP: the Imaging Ultraviolet Spectrograph (IUVS) aboard the Mars Atmospheric and Volatile EvolutioN (MAVEN) mission, and the Emirates Mars Ultraviolet Spectrometer (EMUS) aboard the Emirates Mars Mission (EMM). Both instruments have far exceeded their design goals in science return.
A tale of ultracold nondegenerate dipolar gases
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Ultracold dipolar atoms and molecules present a wealth of exciting out-of-equilibrium phenomena. I’ll discuss some of the understanding developed over the past several years, and several useful applications to experiments.
Strategies for Achieving Rigidity, Resilience, and Robustness in Network-like Soft Materials: Insights from Biopolymer Networks and Circadian Colloids
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Abstract: Living systems exhibit unique emergent properties such as self-assembly, rigidity, resilience, and robustness.
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The life & flow of polarons: from nonequilibrium formation and relaxation to equilibration in the thermodynamic limit
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Abstract: Polarons, quasiparticles composed of an electronic excitation and the material deformation these cause in a solid or liquid, are ubiquitous. Understanding and controlling their formation, nonequilibrium relaxation, and motion are essential in developing next-generation photocatalysts, energy conversion devices, and even superconductors. In this talk, I introduce some of our recent theoretical advances that enable us to probe the exact quantum dynamics of Holstein polarons subject to dispersive phonon baths in small lattice models to the thermodynamic limit.
Earth Science Applications: Lessons Learned
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Abstract: NASA Earth Science has put significant attention towards enabling uses of Earth science information to support decision making activities by public and private sector organizations. In addition to supporting technical innovations, NASA also pursued several programmatic innovations to help the Earth science community develop capacity in engaging with users, designing projects, and enabling results.
APS Lightning Talks: Let's Talk Research
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Abstract:
APS Faculty who have research opportunities in their group will present flash talks on their research.
Clean Up and You Find Things: Taming Halide Perovskite Synthesis toward Robust Phase Stability
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Absract: The promising optoelectronic properties of halide perovskites position them as candidate materials for solar cells, displays, and more. Their compositional and process flexibility provides a large and attractive design space and has led to outstanding optoelectronic figures of merit. However, the same flexibility also gives rise to challenges in reproducibility and phase stability.
Climate Responses Under and Extreme Quiet Sun Scenario
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Abstract: Fundamental understanding of the climate responses to solar variability is obscured by the large and complex climate variability. This long-standing issue is addressed here by examining climate responses under an extreme quiet sun (EQS) scenario, obtained by making the sun void of all magnetic fields. It is used to drive a coupled climate model with whole atmosphere and ocean components.
Collapse and Ejection in the N-body problem and the Formation of Rubble Pile Asteroids
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Abstract: Rubble pile asteroids are thought to form in the aftermath of cataclysmic collisions between proto-planets. The details of how the detritus from such collisions reaccumulate to form these bodies are not well understood, yet can play a fundamental role in the subsequent evolution of these bodies in the solar system. Simple items such as how particle sizes and porosity is distributed within a body can have a significant influence on how they subsequently evolve.
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Hot exciton cooling in nanocrystals quantum dots: Why exciton under confinement relax rapidly?
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Abstract: The efficiencies of devices utilizing semiconductor nanocrystals (NCs) are predominantly regulated by nonradiative processes. One key process in this regard is hot exciton cooling, wherein a highly excited electron-hole pair undergoes nonradiative relaxation to give rise to a band-edge exciton. The timescale and mechanism of this cooling process are not comprehensively understood.
Exploring many-body problems with arrays of individual atoms
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Abstract: Over the last twenty years, physicists have learned to manipulate individual quantum objects: atoms, ions, molecules, quantum circuits, electronic spins... It is now possible to build "atom by atom" a synthetic quantum matter. By controlling the interactions between atoms, one can study the properties of these elementary many-body systems: quantum magnetism, transport of excitations, superconductivity...