Specialties
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Biography
InterestsThe Levis laboratory focuses on understanding the photochemistry and photophysics of molecules interacting with ultrafast, ultra-intense laser pulses. Ultrafast means laser pulses that are only a few millionths of a billionth of a second. Ultra-intense means laser fields approaching the fields binding electrons within molecules. We investigate laser vaporization of condensed phase systems, laser filamentation, laser generation of nanomaterials, and the control of chemical reactions using shaped laser pulses. These efforts are leading to new ways to diagnose disease, map cellular components, detect improvised explosive devices, classify tissues and phenotype, classify explosives for forensics analysis, and to synthesize monodispersed nanomaterials.
Select PublicationsUltraviolet Surprise: Efficient Soft X-Ray High-Harmonic Generation in Multiply Ionized Plasmas
Dimitar Popmintchev, Carlos Hernández-García, Franklin Dollar, Christopher Mancuso, Jose A. Pérez-Hernández, Ming-Chang Chen, Amelia Hankla, Xiaohui Gao, Bonggu Shim, Alexander L. Gaeta, Maryam Tarazkar, Dmitri A. Romanov, Robert J. Levis, Jim A. Gaffney, Mark Foord, Stephen B. Libby, Agnieszka Jaron-Becker, Andreas Becker, Luis Plaja, Margaret M. Murnane, Henry C. Kapteyn, Tenio Popmintchev Science 350:1225 (2015) DOI: 10.1126/science.aac9755 Nonresonant, femtosecond laser vaporization and electrospray post-ionization mass spectrometry as a tool for biological tissue imaging Fengjian Shi, Jieutonne J. Archer, Robert J. Levis Methods (104), 79–85 (2016) DOI: 10.1016/j.ymeth.2016.02.016 Elucidating Strong Field Photochemical Reduction Mechanisms of Aqueous [AuC14](-): Kinetics of Multiphoton Photolysis and Radical-Mediated Reduction Katharine Moore Tibbetts, Behzad Tangeysh, Johanan H. Odhner, Robert J. Levis Journal of Physical Chemistry A 120 (20), 3562–3569 (2016) DOI: 10.1021/acs.jpca.6b03163 Controlling the Dissociation Dynamic of Acetophenone Radical Cation Through Excitation of Ground and Excited State Wavepackets Katharine Moore Tibbetts, Maryam Tarazkar, Timothy Bohinski, Dmitri A Romanov, Spiridoula Matsika, Robert J Levis Journal of Physics B: Atomic, Molecular and Optical Physics 48, 164002 (2015) DOI: 10.1088/0953-4075/48/16/164002 High-energy Non-collinear Optical Parametric Amplifier Producing 4-fs Pulses in the Visible Seeded by a Gas-Phase Filament Johanan H. Odhner, Robert J. Levis Optics Letters 16 (40), 3814-3817 (2015) DOI: 10.1364/OL.40.003814 Filament-Assisted Impulsive Raman Spectroscopy of Ozone and Nitrogen Oxides Erin T. McCole Dlugosz, Reginald Fisher, Aleksey Filin, Dmitri A. Romanov, Johanan H. Odhner, Robert J. Levis The Journal of Physical Chemistry A 119 (35), 9272–9280 (2015) DOI: 10.1021/acs.jpca.5b06319 Triangular Gold Nanoplate Growth by Oriented Attachment of Au Seeds Generated by Strong Field Laser Reduction Behzad Tangeysh, Katharine Moore Tibbetts, Johanan H. Odhner, Bradford B. Wayland, Robert J. Levis Nano Letters 15(5), 3377-3382 (2015) DOI: 10.1021/acs.nanolett.5b00709 Direct Analysis of Intact Biological Macromolecules by Low-Energy, Fiber-Based Femtosecond Laser Vaporization at 1042 nm Wavelength with Nanospray Postionization Mass Spectrometry Fengjian Shi, Paul M. FlaniganIV, Jieutonne J. Archer, Robert J. Levis Analytical Chemistry 87 (6), 3187–3194 (2015) DOI: 10.1021/ac502563c Strong Field Adiabatic Ionization Prepares Selective Launch State for Coherent Control Timothy Bohinski, Katharine Moore Tibbetts, Maryam Tarazkar, Dmitri A. Romanov, Spiridoula Matsika, Robert J. Levis The Journal of Physical Chemistry Letters 5 (24), 4305–4309 (2014) DOI: 10.1021/jz502313f Optical Spectroscopy using Gas-Phase Femtosecond Laser Filamentation Johanan Odhner, Robert Levis Annual Review of Physical Chemistry (65), 605-28 (2014) DOI: 10.1146/annurev-physchem-040513-103708 |
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