December 2019 – Murray Mass Spectrometry Group

Research group of Kermit Murray at Louisiana State University where we use lasers for sampling and imaging and study the chemistry and physics of laser ablation.

Wavelength-Dependent Tip-Enhanced Laser Ablation of Organic Dyes

F. Cao, F. Donnarumma, K.K. Murray, Wavelength-Dependent Tip-Enhanced Laser Ablation of Organic Dyes, Journal of Physical Chemistry C, 124 (2020) 1918-1922; doi: 10.1021/acs.jpcc.9b08081 Abstract The wavelength dependence of atomic force microscope apertureless tip-enhanced laser ablation was studied using a series of organic dyes to assess the effect of surface optical absorption. An optical parametric oscillator …

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Sublimation Electrification of Organic Compounds

B. Banstola, K.K. Murray, Sublimation Electrification of Organic Compounds, J. Am. Soc. Mass. Spectrom., 31 (2020) 888-893; doi: 10.1021/jasms.9b00124. Abstract The electrification of crystalline deposits of organic compounds under high vacuum was measured and quantified. A group of compounds that produce multiply charged ions by matrix-assisted ionization were deposited on a metal plate, and the …

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