Abstract

Abstract: I will present three projects. In the first two, we used two-dimensional infrared (2DIR) spectroscopy to study properties of some complex peptide and protein assemblies 1: Proline-arginine (PR) dipeptide repeats are an example of a growing number of intrinsically disordered proteins (IDPs) known to assemble into membrane-less organelles by liquid-liquid phase separation (LLPS), and has also been implicated in the disease mechanism of Amyotrophic lateral sclerosis (ALS).

Abstract: Superconducting nanowire single-photon detectors (SNSPDs) provide sufficient sensitivity to enable laser induced fluorescence (LIF) experiments in the mid-infrared, an exciting technical development for studying molecule-surface interactions. In this talk, I will present results of experiments on the vibrational dynamics of monolayers and multilayers of solid CO adsorbed at the surface of a NaCl crystal that provide observations of quantum state resolved dynamics.

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Abstract: The Cassini-Huygens mission has revealed Saturn’s largest moon Titan to be a remarkably Earth-like world, with a diverse landscape of rivers, lakes and seas, vast dune fields, plains and mountains. Unlike Earth, however, Titan’s visible surface is dominated by solid organic materials at cryogenic temperatures, and altered by the action of liquid methane and ethane.

Abstract: