Search Results - "Christesen, Steven"

Optimization of Surface-Enhanced Raman Spectroscopy Conditions for Implementation into a Microfluidic Device for Drug Detection by Kline, Neal D, Tripathi, Ashish, Mirsafavi, Rustin, Pardoe, Ian, Moskovits, Martin, Meinhart, Carl, Guicheteau, Jason A, Christesen, Steven D, Fountain, Augustus W

“…A microfluidic device is being developed by University of California–Santa Barbara as part of a joint effort with the United States Army to develop a portable,…”
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Critical Role of Adsorption Equilibria on the Determination of Surface-Enhanced Raman Enhancement by Tripathi, Ashish, Emmons, Erik D, Fountain, Augustus W, Guicheteau, Jason A, Moskovits, Martin, Christesen, Steven D

“…Surface-enhanced Raman spectroscopy (SERS) is a useful technique for probing analyte–noble metal interactions and determining thermodynamic properties such as…”
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Toward Understanding the Influence of Intermolecular Interactions and Molecular Orientation on the Chemical Enhancement of SERS by Cabalo, Jerry, Guicheteau, Jason A, Christesen, Steven

“…Implementation of SERS as an analytical technique is limited because the factors that govern the enhancement of individual vibrational modes are not well…”
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Kinetics and Reaction Mechanisms of Thiophenol Adsorption on Gold Studied by Surface-Enhanced Raman Spectroscopy by Tripathi, Ashish, Emmons, Erik D, Christesen, Steven D, Fountain, Augustus W, Guicheteau, Jason A

“…Thiophenol is commonly used as a model system for surface-enhanced Raman scattering (SERS) of molecules due to the strong affinity of the −SH group toward…”
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Molecular Structure and Solvent Factors Influencing SERS on Planar Gold Substrates by Tripathi, Ashish, Emmons, Erik D, Kline, Neal D, Christesen, Steven D, Fountain, Augustus W, Guicheteau, Jason A

“…Adsorption of analytes on surface enhanced Raman scattering (SERS) active nanometallic substrates is influenced by a variety of factors, including…”
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Recent Advances and Remaining Challenges for the Spectroscopic Detection of Explosive Threats by Fountain, Augustus W., Christesen, Steven D., Moon, Raphael P., Guicheteau, Jason A., Emmons, Erik D.

“…In 2010, the U.S. Army initiated a program through the Edgewood Chemical Biological Center to identify viable spectroscopic signatures of explosives and…”
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Identification of Nucleophilic and Electrophilic Binding Sites on Gold Surface-Enhanced Raman Substrates by Tripathi, Ashish, Emmons, Erik D, Fountain, Augustus W, Christesen, Steven D, Guicheteau, Jason A

“…We have studied the binding of several nitrogen-containing aromatic chemicals to nanostructured gold surfaces from aqueous media in order to better understand…”
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Ultraviolet Resonance Raman Spectroscopy of Explosives in Solution and the Solid State by Emmons, Erik D, Tripathi, Ashish, Guicheteau, Jason A, Fountain, Augustus W, Christesen, Steven D

“…Resonance Raman cross sections of common explosives have been measured by use of excitation wavelengths in the deep-UV from 229 to 262 nm. These measurements…”
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Semi-Automated Detection of Trace Explosives in Fingerprints on Strongly Interfering Surfaces with Raman Chemical Imaging by Tripathi, Ashish, Emmons, Erik D., Wilcox, Phillip G., Guicheteau, Jason A., Emge, Darren K., Christesen, Steven D., Fountain, Augustus W.

“…We have previously demonstrated the use of wide-field Raman chemical imaging (RCI) to detect and identify the presence of trace explosives in contaminated…”
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Characterization of Polymorphic States in Energetic Samples of 1,3,5-Trinitro-1,3,5-Triazine (RDX) Fabricated Using Drop-on-Demand Inkjet Technology by Emmons, Erik D., Farrell, Mikella E., Holthoff, Ellen L., Tripathi, Ashish, Green, Norman, Moon, Raphael P., Guicheteau, Jason A., Christesen, Steven D., Pellegrino, Paul M., Fountain, Augustus W.

“…The United States Army and the first responder community are evaluating optical detection systems for the trace detection of hazardous energetic materials…”
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Surface-Enhanced Raman Scattering (SERS) Evaluation Protocol for Nanometallic Surfaces by Guicheteau, Jason A., Farrell, Mikella E., Christesen, Steven D., Fountain, Augustus W., Pellegrino, Paul M., Emmons, Erik D., Tripathi, Ashish, Wilcox, Phillip, Emge, Darren

“…We present the results of a three-year collaboration between the U.S. Army Edgewood Chemical Biological Center and the U.S. Army Research Laboratory-Aldelphi…”
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Bioaerosol Analysis with Raman Chemical Imaging Microspectroscopy by Tripathi, Ashish, Jabbour, Rabih E, Guicheteau, Jason A, Christesen, Steven D, Emge, Darren K, Fountain, Augustus W, Bottiger, Jerold R, Emmons, Erik D, Snyder, A. Peter

“…Raman chemical imaging microspectroscopy is evaluated as a technology for waterborne pathogen and bioaerosol detection. Raman imaging produces a…”
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Comparison of Visible and Near-Infrared Raman Cross-Sections of Explosives in Solution and in the Solid State by Emmons, Erik D., Guicheteau, Jason A., Fountai, Augustus W., Christesen, Steven D.

“…Raman cross-sections of explosives in solution and in the solid state have been measured using visible and near-infrared excitation via secondary calibration…”
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Ultraviolet Raman Spectra and Cross-Sections of the G-series Nerve Agents by Christesen, Steven D., Jones, Jay Pendell, Lochner, Joseph M., Hyre, Aaron M.

“…Ultraviolet (UV) Raman spectroscopy is being applied to the detection of chemical agent contamination of natural and man-made surfaces. In support of these…”
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Role of the Micro- and Nanostructure in the Performance of Surface-Enhanced Raman Scattering Substrates Assembled from Gold Nanoparticles by Kuncicky, Daniel M., Christesen, Steven D., Velev, Orlin D.

“…Highly active and stable substrates for surface-enhanced Raman scattering (SERS) can be fabricated by using colloidal crystals to template gold nanoparticles…”
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Vibrational frequencies and structural determinations of divinyl sulfoxide by Ellzy, Michael W., Christesen, Steven D., Jensen, James O., Kay, Jack G.

“…We present a detailed analysis of the structure and infrared spectra of divinyl sulfoxide. The vibrational frequencies of the divinyl sulfoxide molecule were…”
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Nonintrusive Analysis of Chemical Agent Identification Sets Using a Portable Fiber-Optic Raman Spectrometer by Christesen, Steven, Aciver, Brian M, Procell, Lawrence, Sorrick, David, Carrabba, Michael, Bello, Job

“…A portable fiber-optic Raman system comprising a diode laser, echelle spectrograph, charge-coupled device (CCD) detector, and filtered fiber-optic probe has…”
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Bacterial mixture identification using Raman and surface-enhanced Raman chemical imaging by Guicheteau, Jason, Christesen, Steven, Emge, Darren, Tripathi, Ashish

“…The ability of normal Raman and surface‐enhanced Raman scattering (SERS) to identify and detect bacteria has shown great success in recent studies. The…”
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Assessing Metal Nanofabricated Substrates for Surface-Enhanced Raman Scattering (SERS) Activity and Reproducibility by Guicheteau, Jason, Christesen, Steven, Emge, Darren, Wilcox, Phillip, Fountain, Augustus W.

“…Surface-enhanced Raman spectroscopy (SERS) has been shown to be an effective technique for increasing the detection sensitivity in chemical and biological…”
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Laser ionization studies of organophosphonates and phosphorus oxide radicals by Long, S. Randolph, Christesen, Steven D

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