Tags: Physical Seminar


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Universal Potential Energy Surfaces


Illuminating the interaction between small molecules and cell membranes

The membranes of infectious fungi and bacteria have emerged as attractive antimicrobial targets due to the relatively rare occurrences of resistance for those drugs active against them. There exists, however, an incomplete understanding of the mechanisms of action for many such membrane-associated small molecule drugs. Using multiple nonlinear microscopy and spectroscopy techniques we are directly probing native small molecule drugs as they…


Ultrafast X-Ray Molecular Dynamics

Transient absorption in the extreme ultraviolet and x-ray spectral regimes is used to probe chemical dynamics on both the femtosecond and attosecond timescales. Laser-produced high-order harmonics in the soft x-ray can investigate dissociating molecules, ring opening, passage through conical intersections, singlet to triplet transitions, and electronic and vibrational coherences. By extending the probe photon energies to 300 eV in the soft x-ray…


Classical Molecular Dynamics Simulations of Electronically Non-Adiabatic Processes


Recovering Unitary Invariance in Orbital-Dependent Density Functional and Wavefunction Formulations: Applications to Magnetic Molecules

The goal of deriving localized-orbitals as a means for describing transferable bonding orbitals or for more efficiently describing electronic correlation has a long history. Much of the inspiration in this area arose from a seminal paper by Edmiston and Ruedenberg[1] that derived localized orbitals based upon minimization of the magnitude of the mutual exchange, and which were observed to exhibit features that match ideas about chemical bonding…


The Curious Case of Cyclopropenylidene


Reactions in Helium Droplets: The Ethylperoxy Radical


Label-Free Biosensors Utilizing DNA-Enhanced Surface Plasmon Resonance


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