Search Results - "Kunz, Roderick"

Engineering synthetic breath biomarkers for respiratory disease by Chan, Leslie W., Anahtar, Melodi N., Ong, Ta-Hsuan, Hern, Kelsey E., Kunz, Roderick R., Bhatia, Sangeeta N.

“…Human breath contains many volatile metabolites. However, few breath tests are currently used in the clinic to monitor disease due to bottlenecks in biomarker…”
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Optimization of ultraviolet Raman spectroscopy for trace explosive checkpoint screening by Amin, Mitesh, Wen, Patrick, Herzog, William D., Kunz, Roderick R.

“…Raman spectroscopy has long been considered a gold standard for optically based chemical identification, but has not been adopted in non-laboratory operational…”
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Vapor Pressure of Hexamethylene Triperoxide Diamine (HMTD) Estimated Using Secondary Electrospray Ionization Mass Spectrometry by Aernecke, Matthew J, Mendum, Ted, Geurtsen, Geoff, Ostrinskaya, Alla, Kunz, Roderick R

“…A rapid method for vapor pressure measurement was developed and used to derive the vapor pressure curve of the thermally labile peroxide-based explosive…”
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Theoretical Bounds on Electron Energy Filtering in Disordered Nanomaterials by Dodin, Amro, Aull, Brian, Kunz, Roderick R, Willard, Adam P

“…Electron energy filters have recently been proposed as a method of reducing the effects of thermal broadening in device and sensing applications, enabling…”
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Use of Mass Spectrometric Vapor Analysis To Improve Canine Explosive Detection Efficiency by Ong, Ta-Hsuan, Mendum, Ted, Geurtsen, Geoff, Kelley, Jude, Ostrinskaya, Alla, Kunz, Roderick

“…Canines remain the gold standard for explosives detection in many situations, and there is an ongoing desire for them to perform at the highest level. This…”
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Reagent approaches for improved detection of chlorate and perchlorate salts via thermal desorption and ionization by Kelley, Jude A., Ostrinskaya, Alla, Geurtsen, Geoff, Kunz, Roderick R.

“…Rationale Techniques for improving the detectability of chlorate and perchlorate salts with thermal desorption based ionizers (i.e. radioactive, corona…”
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Characterization of nitrated sugar alcohols by atmospheric‐pressure chemical‐ionization mass spectrometry by Ostrinskaya, Alla, Kelley, Jude A., Kunz, Roderick R.

“…Rationale The nitrated sugar alcohols mannitol hexanitrate (MHN), sorbitol hexanitrate (SHN) and xylitol pentanitrate (XPN) are in the same class of compounds…”
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Biomimetic Sniffing Improves the Detection Performance of a 3D Printed Nose of a Dog and a Commercial Trace Vapor Detector by Staymates, Matthew E., MacCrehan, William A., Staymates, Jessica L., Kunz, Roderick R., Mendum, Thomas, Ong, Ta-Hsuan, Geurtsen, Geoffrey, Gillen, Greg J., Craven, Brent A.

“…Unlike current chemical trace detection technology, dogs actively sniff to acquire an odor sample. Flow visualization experiments with an anatomically-similar…”
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Rapid Quantitative Analysis of Multiple Explosive Compound Classes on a Single Instrument via Flow‐Injection Analysis Tandem Mass Spectrometry by Ostrinskaya, Alla, Kunz, Roderick R., Clark, Michelle, Kingsborough, Richard P., Ong, Ta‐Hsuan, Deneault, Sandra

“…A flow‐injection analysis tandem mass spectrometry (FIA MSMS) method was developed for rapid quantitative analysis of 10 different inorganic and organic…”
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Reagent assessment for detection of ammonium ion-molecule complexes by Gregory, Kerin E., Ostrinskaya, Alla, Kunz, Roderick R.

“…RATIONALE Ammonia (NH3) is an important chemical target in sensor applications such as trace explosives detection of ammonium nitrate (NH4NO3) and…”
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Fate Dynamics of Environmentally Exposed Explosive Traces by Kunz, Roderick R, Gregory, Kerin E, Aernecke, Matthew J, Clark, Michelle L, Ostrinskaya, Alla, Fountain, Augustus W

“…The chemical and physical fates of trace amounts (<50 μg) of explosives containing 2,4,6-trinitrotoluene (TNT), hexahydro-1,3,5-trinitro-1,3,5-triazine (RDX),…”
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Surface Functionalization and Imaging Using Monolayers and Surface-Grafted Polymer Layers by Ingall, Michael D. K, Honeyman, Charles H, Mercure, Juanita V, Bianconi, Patricia A, Kunz, Roderick R

“…A method of surface functionalization of ceramics with monolayers and surface grafted polymer layers is described. A phenylsilane monolayer is created on the…”
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Measurement of trace explosive residues in a surrogate operational environment: implications for tactical use of chemical sensing in C-IED operations by Kunz, Roderick R, Gregory, Kerin Clow, Hardy, Dennis, Oyler, Jonathan, Ostazeski, Stanley A, Fountain, Augustus Way III

“…A campaign to measure the amount of trace explosive residues in an operational military environment was conducted on May 27-31, 2007, at the National Training…”
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Large-area interdigitated array microelectrodes for electrochemical sensing by Cohen, Adam E, Kunz, Roderick R

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Quantitative Comparison of Trace Organonitrate Explosives Detection by GC-MS and GC-ECD2 Methods with Emphasis on Sensitivity by Gregory, Kerin E., Kunz, Roderick R., Hardy, Dennis E., Fountain, Augustus Way, Ostazeski, Stanley A.

“…Quantitative analysis of organonitrate explosive standards was performed by gas chromatography (GC) with dual electron capture detection (ECD2) and…”
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The Role of Stationary Phase Selection on Performance For Explosives Analysis Using GC-ECD by Kunz, Roderick R., Gregory, Kerin E., Hardy, Dennis

“…Gas chromatography with electron capture detection (GC-ECD) analysis of explosive-related nitro organic compounds was performed using four different column…”
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Key challenges and prospects for optical standoff trace detection of explosives by Wen, Patrick, Amin, Mitesh, Herzog, William D., Kunz, Roderick R.

“…Sophisticated improvised explosive devices (IEDs) challenge the capabilities of current sensors, particularly in areas away from static checkpoints. This…”
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Colourimetry for the sensitive detection of vapour-phase chemicals: State of the art and future trends by Kingsborough, Richard P., Wrobel, Alexandra T., Kunz, Roderick R.

“…Chemical detection of vapour-phase analytes is increasingly moving toward deployment of low size, weight and power (SWaP) instruments. Each measurement…”
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Ultraviolet photolytic vapor generation from particulate ensembles for detection of malathion residues in aerosols by Kunz, Roderick R., Leibowitz, Frank L., Downs, Deanna K.

“…A method to selectively generate vapor signatures from malathion entrained within matrices of surface-impacted aerosol particles has been demonstrated. The…”
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Comparison of detection selectivity in ion mobility spectrometry: proton-attachment versus electron exchange ionization by Kunz, Roderick R, Dinatale, William F, Becotte-Haigh, Paul

“…Two types of ionization have been compared for ion mobility spectrometry. The first uses a β-emitter to initiate proton exchange between an amine reactive gas…”
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