Levis, Robert - Temple University - Department of Chemistry

个人简介

B.A. (1984) La Salle College Ph.D. (1988) The Pennsylvania State University

研究领域

Analytical Chemistry; Physical Chemistry

Strong Field Chemistry Levis pioneered the area of strong field chemistry, the use of ultrafast and intense lasers to modify, manipulate and detect virtually any molecular system. This work employs lasers having electric field strength of magnitude equal to the forces binding atoms into molecules to reprogram specific characteristics of molecular. Recent work combines strong laser fields with adaptive control to develop novel photonic chemistries. This work has applications in the detection of chemical warfare agents, developing novel materials processing methods (e.g. dentistry) and in biophotonics (e.g. deep tissue cancer detection).

近期论文

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Perez, J.J., Flanigan, P.M., Brady, J.J., Levis, R.J., “The Classification of Smokeless Gun powders using Laser Electrospray Mass Spectrometry and Offline Multivariate Statistical Analysis,” Analytical Chemistry, 2013 85(1), 296-302 Flanigan, P.M., Radell, L., Brady, J.J., Levis, R.J., “Differentiation of Eight Phenotypes and Discovery of Potential Biomarkers for a Single Plant Organ Class Using Laser Electrospray Mass Spectrometry and Multivariate Statistical Analysis,” Analytical Chemistry, 2012 84(14) 6225-6232 Odhner, J.H., Romanov, D.A., McCole, E.T., Wahlstrand, J.K., Milchberg, H.M., Levis R.J., “Ionization-Grating-Induced Nonlinear Phase Accumulation in Spectrally-Resolved Transient Birefringence Measurements at 400 nm,” Physical Review Letters, 2012 109(6), 065003 Brady, J.J., Judge, E.J., Levis, R.J., “Reply to Breuker et al.: How laser electrospray mass spectrometry (LEMS) measures condensed phase protein structure, not vacuum structure,” Proceedings of the National Academy of Sciences of the United States of America, 2012 109(5), E207-E207 Flanigan, P.M., Perez, J.J., Karki, S., Levis, R.J., “Quantitative Measurements of Small Molecule Mixtures Using Laser Electrospray Mass Spectrometry,” Analytical Chemistry, 2012 Judge, E.J., Brady, J.J., Barbano, P.E., Levis, R.J.,"Nonresonant Femtosecond Laser Vaporization with Electrospray Postionization for ex vivo Plant Tissue Typing Using Compressive Linear Classification" Analytical Chemistry, 2011 83(6) 2145-2151 Compton, R., Filin, A., Romanov, D.A., Levis, R.J., “Dynamic Rabi Sidebands in Laser-Generated Micro-Plasmas: Tunablity and Control,” Physical Review A, 2011 83(5) 1050-2947 Brady, J.J., Judge, E.J., Levis, R.J., “Nonresonant Femtosecond Laser Vaporization of Aqueous Protein Preserves Folded Structure,” Proceedings of the National Academy of Sciences, 2011 108(30), 12217-12222 Flanigan, P.M., Brady, J.J., Judge, E.J., Levis, R.J., “Determination of Inorganic Improvised Explosive Device Signatures Using Laser Electrospray Mass Spectrometry Detection with Offline Classification,” Analytical Chemistry, 2011 83(18) 7115-7122 Odhner, J.H., McCole, E.T., Levis, R.J., “Filament-Driven Impulsive Raman Spectroscopy,” Physical Chemistry A, 2011 115 (46), 13407-13412 Odhner, J.H., Romanov, D.A., Levis, R.J., “Filament-Based Stimulated Raman Spectroscopy,” SPIE Photonics West Conference, 2010 7582: 75820M. Compton, R., Filin, A., Romanov, D.A., Levis, R.J., “Tunable Broadband Optical Generation via Giant Rabi Shifting in a Micro-plasma,” SPIE Photonics West Conference, 2010 7582: 75820D. Brady, J.J., Judge, E.J., Levis, R.J., “Laser Electrospray Mass Spectrometry of Adsorbed Molecules at Atmospheric Pressure,” SPIE Photonics West Conference, 2010 7582: 75820M. Plewicki, M., Compton, R., Filin, A., Levis, R.J., “Origin of the Spectral Coherence in Dynamically Broadened Rabi Sidebands,” Optics Letters, 2010 35(5) 778-780. Smith, S.M., Romanov, D.A., Li, X., Sonk, J.A., Schlegel, H.B., Levis, R.J., “Numerical Bound State Electron Dynamics of Carbon Dioxide in the Strong-Field Regime,” Journal of Physical Chemistry A, 2010 114(7) 2576-2587. Smith, S.M., Romanov, D.A., Heck, G., Schlegel, H.B., Levis, R.J., “Observing the Transition from Stark-Shifted, Strong-Field Resonance to Nonadiabatic Excitation,” Journal of Physical Chemistry C, 2010 114(12) 5645-5651. Romanov, D.A., Compton, R., Filin, A., Levis, R.J., “Dynamics of Strong-Field Laser-Induced Microplasma Formation in Noble Gases,” Physical Review A, 2010 81(3) 033403. Judge, E.J., Brady, J.J., Dalton, D., Levis, R.J., “Analysis of Pharmaceutical Compounds from Glass, Fabric, Steel, and Wood Surfaces at Atmospheric Pressure Using Spatially Resolved, Nonresonant Femtosecond Laser Vaporization Electrospray Mass Spectrometry,” Analytical Chemistry, 2010 82(8) 3231-3238. Brady, J.J., Judge, E.J., Levis, R.J., “Identification of Explosives and Explosive Formulations using Laser Electrospray Mass Spectrometry,” Rapid Communications in Mass Spectrometry, 2010 24(11) 1659-1664. Coughlan, M.A., Plewicki, M., Levis, R.J., “Creating Multiple Longitudinal Foci With Parametric Spatio-Temporal Focusing,” SPIE Photonics West Conference, 2010 Vol. 7570, 75700R.