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    "151044-21910798":
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        "date_start":"2026-09-17",
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        "event_title":"Locality as a Design Variable at Interfaces",
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        "combined_title":"Locality as a Design Variable at Interfaces: Professor Sarah King from University of Chicago",
        "event_subtitle":"Professor Sarah King from University of Chicago",
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        "event_type_id":"21",
        "description":"Interfacial function is often attributed to the few atomic layers at a boundary. For mixed-dimensional interfaces, however, how far that influence extends depends strongly on direction. The same boundary can act locally along one crystallographic direction and nonlocally along another, reaching tens to hundreds of nanometers into adjoining materials. While theory has long recognized such nonlocality, directly resolving it at functioning interfaces has remained challenging. I argue that the locality of an interface, the distance over which its influence reaches, is not a fixed material property but a design variable revealed by resolving the interfacial response in momentum, space, and time. My group achieves this using momentum-resolved electron energy-loss spectroscopy, transient absorption spectroscopy, and time-resolved photoemission microscopy. I will discuss two case studies. In MoOCl2, an anisotropic van der Waals crystal, the interface extends far along one in-plane direction while remaining confined along the orthogonal one, making a single boundary simultaneously local and nonlocal. In cobalt and iron oxides, the balance is set instead by the material: regions of local bonding and defect trapping can dominate in one oxide, while strain and interfacial fields carry influence across buried interfaces in another. Together, these examples show that the role of locality at an interface can be tuned by direction, structure, and composition, providing a route to engineer light\u2013matter interactions for photocatalysis and quantum emitters.",
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        "datetime_modified":"20260909T100435",
        "datetime_start":"20261008T160000",
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        "has_end_time":1,
        "date_start":"2026-10-08",
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        "time_end":"17:15:00",
        "time_zone":"America\/Detroit",
        "event_title":"From Spontaneous to Stimulated Emission: Quantum Optical Probes for Supramolecular Organization",
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        "combined_title":"From Spontaneous to Stimulated Emission: Quantum Optical Probes for Supramolecular Organization: Valerica Raicu | University of Wisconsin-Milwaukee",
        "event_subtitle":"Valerica Raicu | University of Wisconsin-Milwaukee",
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        "description":"Quantum statistical properties of fluorescence emitted spontaneously in random directions underpin a variety of experimental methods for determining molecular interactions in both test tubes and biological cells. I will begin this talk with a brief overview of a method developed in my lab, dubbed Fluorescence Intensity Fluctuation (FIF) Spectrometry, which probes spatial fluctuations in fluorescence intensities from fluorescently labeled proteins to determine the number of subunits comprising a complex. I will then present F\u00f6rster Resonance Energy Transfer (FRET) Spectrometry and its application to determination of the relative distances between and orientation of fluorescent molecules within a complex via energy transfer between their transition dipoles. In the third part of the talk, I will introduce a mathematical framework for quantization of electromagnetic fields emitted by single dipole radiators, which predicts both the directionality of photon emission probability and light-stimulated electromagnetic wave collapse. I will conclude by presenting preliminary experimental results testing these effects. These quantum phenomena could lead to new methods for directly determining protein orientation within complexes, complementing the spontaneous emission-based methods.",
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        "event_title":"Shaama Sharada Seminar",
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        "combined_title":"Shaama Sharada Seminar: Shaama Sharada | University of Southern California",
        "event_subtitle":"Shaama Sharada | University of Southern California",
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        "datetime_start":"20261022T160000",
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        "date_start":"2026-10-22",
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        "event_title":"Amber Krummel Seminar",
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        "combined_title":"Amber Krummel Seminar: Amber Krummel | Colorado State University",
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