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Results 76–100 of 154

Jeffrey Koplow
Staff Page • R&D System Engineering, Energy Nanomaterials. Biography Jeff Koplow specializes in multi-disciplinary problem solving in the physical sciences and their corresponding engineering disciplines. Over his 22-year research and development (R&D) career, he has developed expertise in physical chemistry, chemical kinetics, atmospheric chemistry, instrumentation, electronics (digital, analog, power, and RF), spectroscopic sensing,...

Joe Ronevich
Staff Page • Principal Member of Technical Staff, Hydrogen and Material Science. Biography Joe Ronevich is a Principal Member of the Technical Staff in the Hydrogen and Materials Science department. He is a co-principal investigator in the Hydrogen Effects on Materials Lab (HEML) located in Livermore, CA. His research focuses on hydrogen embrittlement...

Jonathan H. Frank
Staff Page • Distinguished Member of Technical Staff, Combustion Research Facility, Reacting Flows. Biography As the Principal Investigator of the Advanced Imaging Laboratory, Jonathan Frank has extensive experience in the development and application of laser diagnostics for multidimensional imaging of chemically reacting flows. As a leader in his field, he has made important...

Judit Zádor
Staff Page • Theoretical Chemical Kinetics . Biography Judit joined Sandia in 2007 and is currently a Distinguished Member of Staff. Her research lies in the broad field of theoretical reaction kinetics, and addresses problems in combustion, atmospheric chemistry, and heterogeneous catalysis. She works on automated kinetics calculations and leads the development of...

Judit Zádor awarded a Gauss Professorship
Post, February 4, 2026 • Judit Zádor (DMTS 8353) was awarded a Gauss Professorship by the Göttingen Academy of Sciences in Lower Saxony. The Gauss Professorship, established on the 100th anniversary of Carl Friedrich Gauss’ death, offers outstanding scientists from outside Germany the opportunity to temporarily, and in a sense symbolically, occupy the chair of...

Judit Zádor Elected Fellow of The Combustion Institute
Post, March 5, 2024 • Judit Zádor (8353), a physical chemist, has been elected a 2024 Fellow of The Combustion Institute “for exceptional contributions in theoretical chemical kinetics and innovations in approaches for automating quantum chemical calculations.” The lifetime honorific title of Fellow is a testament to active participation in the combustion field through publications...
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Julien Luc Manin
Staff Page • Principal Member of the Technical Staff, Applied Combustion. Biography Dr. Manin obtained his MSc degree in Mechanical Engineering and in Automotive and Transportation Systems in France, in 2006. He completed his PhD in Physics and Mechanical Engineering at the Polytechnic University of Valencia, Spain, in 2011. Dr. Manin has been...

Khachik Sargsyan
Staff Page • Principal Member of the Technical Staff . Biography Dr. Khachik Sargsyan is a Distinguished Member of the Technical Staff at Sandia National Laboratories in Livermore, California. Before working in staff and postdoctoral positions at Sandia, he received his Ph.D. in Applied and Interdisciplinary Mathematics from the University of Michigan, Ann...
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Kinetics of Elusive Intermediates
Page • Complex chemical reaction networks like those that occur in combustion and in atmospheric chemistry can contain thousands of interlocked chemical transformations. Frequently, important aspects of the overall chemistry depend on a few key reactions, for example, the chain-branching reactions that increase the number of reactive free radicals and drive hydrocarbon...

Kinetics of Hydrocarbon Oxidation
Page • Technical Details Figure 1 Oxidation turns hydrocarbons into water and carbon dioxide through an interconnected web of reactions. The hydrocarbon’s molecular structure and the conditions of oxidation, such as temperature, pressure, and composition, profoundly impact phenomena ranging from air quality to engine performance. In this aspect of our chemical physics...

Krupa Ramasesha
Staff Page • Principal Member of Technical Staff. Biography Krupa Ramasesha is a Principal Investigator at Sandia National Laboratories, Livermore, where she is leading a research program investigating ultrafast dynamics in gas phase and condensed phase systems, funded by the DOE/BES Gas Phase Chemical Physics Program and the Laboratory-Directed Research and Development Program....

Laser Diagnostics for Cryogenic Gas Releases
Page • Technical Details Figure 1 Research and development efforts both inside and outside the Labs are aimed at providing a fundamental understanding of cryogenic hydrogen dispersion and flames. Experiments are used to validate models that are, in turn, used to inform safety, codes and standards for infrastructure that uses liquid hydrogen,...

Laser-Driven Control of Bond-Breaking
Post, September 3, 2026 • Controlling the course of a chemical reaction by mode-selective laser excitation is typically thwarted by the rapid delocalization of the energy, especially in large molecules. CRF researchers Tim Zwier, Kendrew Au, Chin Lee, and Kyung-Chul Woo, together with colleagues from Purdue University, University of Nevada, Reno, and Fairfield University, discovered a...

Laser-heated Stagnation Flow Reactor (LSFR)
Page • Figure 1 Figure 1 Shown here is the virtually accessible laser-heated stagnation flow reactor (LSFR) for characterizing redox chemistry of materials under extreme conditions. The LSFR is equipped with a solid-state laser to replicate the high energy flux and rapid heating rates that materials encounter in a concentrating solar reactor....

Laura M. McCaslin
Staff Page • Senior Member of the Technical Staff, Combustion Research Facility. Biography Laura M. McCaslin is a Senior Member of the Technical Staff in the CRF at Sandia.  Her research program centers on computing the dynamics of molecular systems and materials.  Her research program spans many areas, including atmospheric chemistry, photochemistry, quantum...
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Leonard “Lennie” Klebanoff
Staff Page • Principal Member of Technical Staff. Biography Lennie Klebanoff is a Principal Member of the Technical Staff in the Combustion Research Facility at Sandia National Laboratories. He leads challenging R&D efforts that solve important problems in H2 storage, H2 fuel-cell applications, semiconductor technology and other areas of vital national interest. Education...

Leonid Sheps
Staff Page • Principal Member of Technical Staff. Biography Leonid (Lenny) Sheps is a Principal Member of the Technical Staff at Sandia National Laboratory. His current research interests include reaction kinetics and dynamics in the gas phase and at gas-liquid interfaces. He leads the Sandia effort within the joint Argonne-Sandia Consortium on Pressure-Dependent...

Long-Path Absorption
Page • Sensitive cavity-enhanced absorption spectrometry for gas-phase chemical kinetics Figure 1 (Left) SULI intern Zachary Decker operates the time-resolved broadband cavity-enhanced absorption spectrometer under the mentorship of PI Leonid Sheps. (Right) The time-resolved UV absorption spectrum of Criegee intermediate CH2OO Technical Details Absorption of photons from the IR to the UV...

Low-Temperature Gasoline Engine Combustion Laboratory
Page • Low-temperature gasoline combustion (LTGC) strategies encompass both homogeneous and stratified charge compression ignition (HCCI and SCCI) combustion  technologies. These technologies achieve high, diesel-like efficiencies and very low emissions of NOx and particulate. In an LTGC engine, the piston compresses a dilute, premixed fuel/air charge that autoignites and burns volumetrically. The charge...

Lyle M. Pickett
Staff Page • Senior Scientist. Biography Since 2002, Lyle Pickett has been the Principal Investigator for the Spray Combustion project in the Engine Combustion Research Department of the Combustion Research Facility at Sandia National Laboratories in Livermore, California. Lyle graduated from the University of Wisconsin–Madison with a PhD in mechanical engineering. He holds...

Mass Spectrometric Methods
Page • At the CRF, researchers apply the power of mass analysis to investigate the details of complex chemical reaction networks such as those that drive combustion, autoignition, and tropospheric autoxidation.” Development and application of synchrotron photoionization methods have proved particularly powerful, and the CRF has benefited from a close collaborative relationship...

Measurements via Double-resonance Ion Imaging Mass Spectrometry
Post, May 27, 2026 • CRF researchers Haw-Wei Lin, Eric Smoll, Jonathan Frank and Dave Chandler published a paper in Journal of Physics B entitled, "Absolute Cross Section Measurements via Double Resonance Ion-Imaging Mass Spectrometry: The mp51/2 n(p′/f′) Autoionizing Rydberg States of Argon." Employing a novel in situ double-resonance scheme using an ion-imaging mass spectrometer...

Molecular Cage Adapts its Shape to its Contents
Post, September 3, 2026 • Molecular cages that sequester certain ions can be important for designing new strategies for selective capture of critical elements from aqueous solution. Using advanced theory and unique spectroscopy methods available at Sandia, CRF researchers Tim Zwier, Chin Lee, and Kendrew Au, together with Sandia colleague Jessica Rimsza and collaborators from LANL,...

Multiphase Systems
Page • The interaction of gas phase molecules with other phases bridges two systems—condensed phase and gas phase—that are described by different paradigms of chemical physics. Our research in multiphase systems focuses on understanding how these regimes affect each other and the nature of the intermediary region between the phases. Two areas...
Results 76–100 of 154