Page • Technical Details Studies of the infrared and ultraviolet spectroscopy of large molecular ions and complexes are carried out in a versatile, multi-stage mass spectrometer that incorporates a cryogenically cooled octopole ion trap that is cooled to 5 K. Single-conformation IR and UV spectra are recorded using IR-UV double resonance photofragment...
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Dario Lopez Pintor
Staff Page • Engineering Science, Senior Member of Technical Staff. Biography Dr. Dario Lopez Pintor is the principal investigator in the Sandia Low-Temperature Gasoline Combustion Engine Laboratory, the Off-Road Diesel Engine Laboratory and the Light-Duty Direct-Injection Spark-Ignition Engine Laboratory. Dario is currently responsible for research to improve efficiency and reduce emissions of off-road...
Data Science and Machine Learning
Page • We develop data science and machine learning (ML) methods targeted at advancing the state of the art in the computational modeling and analysis of physical systems. We focus particularly on scientific ML, where ML systems are constrained by available physical laws, aside from the explicit learning from data. Machine Learning...
Dave Chandler
Staff Page • Fellow, Combustion Research Facility, Transportation Research Center. Biography Dave was born in Albuquerque New Mexico and attended the University of New Mexico where he obtained his bachelors in Chemistry and was captain of the gymnastics team in 1975. He obtained a PhD in Chemistry at Indiana University and performed a...
David L. Osborn
Staff Page • Distinguished Member of Technical Staff, Gas Phase Chemical Physics. Biography David's research focuses on understanding the mechanisms of chemical reactions. To obtain the greatest level of detail, he often studies reactions that occur completely in the gas phase. More recently, he started a program to study the gas phase immediately...
Dedication, curiosity earn chemist DOE Early Career Award
Post, June 16, 2022 • CRF Scientist Krupa Ramasesha Each year, the Department of Energy awards five-year, $2.5M, Early Career Award grants to young scientists, chosen through a highly competitive research proposal selection process. For CRF scientist Krupa Ramasesha, winning the Department of Energy’s Early Career Award means that she can launch an in-depth study...
Direct Numerical Simulation
Page • Sandia has developed a massively parallel DNS capability for turbulent reactive flows coupled with detailed chemical reactions and molecular transport. The DNS code, S3D, is used to perform DNS code of fundamental “turbulence-chemistry” interactions in combustion at Sandia and by researchers worldwide, notably at KAUST, U. of New South Wales,...
DNS of Turbulent Combustion
Page • Sandia has developed a massively parallel DNS capability for turbulent reactive flows coupled with detailed chemical reactions and molecular transport. The DNS code, S3D, is used to perform DNS code of fundamental “turbulence-chemistry” interactions in combustion at Sandia and by researchers worldwide, notably at KAUST, U. of New South Wales,...
Doug Medlin
Staff Page • Materials Science. Biography Douglas Medlin is a Distinguished Member of the Technical Staff at Sandia National Laboratories in Livermore, California, USA, where he has served since 1992. Electron microscopy is a central tool for his research, which is broadly concerned with how the atomistic and mesoscale structure of interfaces controls...
Dynamics of Molecules in Excited States
Page • When molecules absorb visible or ultraviolet light, they are promoted to an excited state in which the electrons of the molecule occupy different orbitals. This process is critical not only to life on Earth (e.g., photosynthesis), but also to human interactions (e.g., vision). We seek to understand the fundamental details...
Elliot James Fuller
Staff Page • Materials Physics. Biography Elliot Fuller received his Ph.D. in physics from the University of California at Irvine, where he worked under Prof. Phil Collins studying low-dimensional electronic systems including single walled carbon nanotubes. He accepted a postdoctoral fellowship in the Materials Physics department at Sandia National Laboratory in 2015 and...
Energy Transfer Collisions
Page • Image of NO (A, J=7.5) after a collision of two molecular beams, one having NO seeded in He colliding with a beam on NO seeded in Ar. The NO in booth beams is excited into the A electronic state and the j=0 rotational state. The He in one beam collides...
Engine Combustion
Page • The mission of the Engine Combustion Research group is to develop the science-based understanding needed by industry to design the next generation of advanced internal-combustion engines that use both conventional and alternative fuels. We develop a detailed, pre-competitive understanding of the dominant in-cylinder processes, providing guidance to engine designers who...
Ethan Hecht
Staff Page • Senior Member of Technical Staff, Combustion Research Facility. Biography Ethan S. Hecht is a Senior Member of the Technical Staff at the Combustion Research Facility at Sandia National Laboratories. He has broad expertise in hydrogen energy systems. He has led experimental investigations of (high pressure and cryogenic) hydrogen dispersion and...
Exascale Catalytic Chemistry
Page • Sandia is developing pynta, a tool to explore reactions of adsorbates on crystal facets automatically. The goal of the ECC project is to create a computational framework that accelerates discovery and characterization of complex molecular systems. We are targeting gas-phase and coupled heterogeneous/gas-phase reactions and reaction mechanisms with relevance to...
Exascale Computing Program
Page • To meet aggressive national goals for significantly reducing petroleum use and greenhouse gas emissions requires major improvements in all aspects of the nation’s energy use. Combustion processes have historically dominated electrical power production and transportation systems. Despite major advances in improving the efficiency and reducing the costs of alternative energy...
Experimental Capabilities
Page • Sandia Labs scientists invented and developed ground-breaking scientific and engineering capabilities—both experimental and computational—which laid the foundation for today’s combustion research model. Built in the early 1970s, on the promise that laser beams could be used to interrogate hostile environments, Sandia’s Combustion Research Facility (CRF) is now world renowned for...
Experimental Turbulent Combustion Research
Page • Example turbulent flame configurations used for fundamental studies of turbulence-chemistry interactions. Different flow configurations and fuels provide a progression of complexity with respect to fluid dynamics and chemical kinetics. Systematic experimental studies of these flames using laser diagnostics are combined with theory and modeling to advance our understanding of the...
Fabulous at Forty!
Post, April 5, 2021 • Fueling the Future Established at Sandia National Laboratories in Livermore, California, as the first U.S. Department of Energy (DOE) user facility, since the early 1980s the Combustion Research Facility (CRF) has served as a national and international leader in combustion science and technology for more than 40 years. As the...
Finding a molecular needle in a haystack
Post, July 7, 2017 • Bálint Sztáray, left, from the University of the Pacific, and Sandia National Laboratories chemist David Osborn display the PEPICO instrument. Sandia Labs creates better ‘fingerprints’ to detect elusive, valuable chemical compounds By Sarah Sewel Imagine being able to see the entire Statue of Liberty and a small ant on its...
Fuel property put to the test
Post, March 9, 2021 • Sandia postdoc receives SAE Excellence in Oral Presentation Award for phi-sensitivity research Understanding the fundamentals of phi-sensitivity, a key fuel property that represents how the autoignition reactivity of the fuel varies with the fuel/air equivalence ratio, will help us increase the efficiency and facilitate the development of practical low-temperature gasoline...
Fusion
Page • Sandia researchers have long supported DOE Fusion Energy Science efforts to make magnetic confinement fusion a practical source of electrical power. To develop this technology, Sandia’s work includes plasma-material interactions, boundary physics measurements at the DIII-D tokamak facility in San Diego, and fusion reactor blanket materials and the associated tritium...
Gallery
Page • CRF researchers (left to right) Scott Skeen (now at Dixie State University), Nils Hansen, and postdoc Brian Adamson (now at ThermoFisher) around the tandem mass spectrometer they used to study the structure of large hydrocarbon molecules in a sooting flame. (Photo credit: Michael Padilla) Hydrogen Production
Gasoline Combustion Fundamentals Laboratory
Page • Aggressive DOE Vehicle Technologies Program (VTP) gasoline engine fuel-economy and pollutant- emission targets can be met through some combination of reduced heat transfer, lower throttling losses, shorter combustion durations, lower combustion temperatures, improved mixture preparation, and higher compression ratios. Charge dilution by air or exhaust gas recirculation (EGR) is the...
Habib N. Najm
Staff Page • Senior Scientist, Combustion Research Facility. Biography Habib Najm is a Senior Scientist at Sandia National Laboratory. He leads a research program in computational chemical sciences and uncertainty quantification, funded by the U.S. Department of Energy. He joined Sandia National Laboratories in 1993, and has worked in numerous computational science research...
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