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DTSTAMP:20250316T083212
DTSTART;TZID=America/Detroit:20250317T160000
DTEND;TZID=America/Detroit:20250317T170000
SUMMARY:Workshop / Seminar:GLNT: Six-functor formalism for quasi-coherent sheaves in rigid-analytic geometry
DESCRIPTION:Abstract: I will explain how to obtain a six-functor formalism (in the sense of Mann) for quasi-coherent sheaves on (derived) rigid-analytic varieties. The underlying functional analysis uses bornological spaces and a recently developed theory of derived analytic geometry due to Ben-Bassat--Kelly--Kremnitzer.
UID:131017-21867602@events.umich.edu
URL:https://events.umich.edu/event/131017
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Mathematics
LOCATION:East Hall - 3088
CONTACT:
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DTSTAMP:20250307T111612
DTSTART;TZID=America/Detroit:20250317T160000
SUMMARY:Workshop / Seminar:Gomberg Lecture: In Situ Probe of Structure and Dynamics at Metal electrode/Electrolyte Interface: Interfacial Field\, Electro-induction Effect\, and Hot Electron Transfer
DESCRIPTION:Structure and dynamics of electric double layer (EDL)\, the sub-nanometer region at the electrode/electrolyte interface\, are essential to the function and performance of many energy conversion and storage devices\, ranging from electrolyzers\, photoelectrochemical cells\, fuel cells to batteries. In situ probe of the EDL structure and dynamics at the molecular level requires advanced molecular spectroscopic tools with interfacial sensitivity and/or selectivity. In this talk\, I will discuss three recent studies in developing and applying vibrational sum frequency generation (VSFG) spectroscopy and surface enhanced Raman spectroscopy (SERS) as powerful in situ interface specific/sensitive vibrational spectroscopic tools. 1) Using combined VSFG and DFT calculation\, we determine the binding structure of a molecular CO2 reduction catalyst on metal electrodes and interfacial electric field profile in the EDL\, revealing surprisingly large electrode induction effects on molecular catalyst. 2) Using combined SERS and MD simulation\, we obtain an atomistic view of the structure of solvent and ion molecules at the EDL\, revealing an unconventional interfacial water structure change at high negative electrode polarizations in water-in-salt electrolytes. 3) Using time-resolved VSFG\, we directly measure hot electron transfer induced vibrational dynamics of adsorbates on metal electrodes\, suggesting the possibility of plasmon (or light)-enhanced electrochemistry.
UID:125079-21854342@events.umich.edu
URL:https://events.umich.edu/event/125079
CLASS:PUBLIC
STATUS:CONFIRMED
CATEGORIES:Chemistry,Gomberg Lecture
LOCATION:Chemistry Dow Lab - 1640
CONTACT:
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