News

It’s no drag: New heavy vehicle design increases fuel efficiency, cuts carbon emissions

July 1, 2021- 
Reshaping the exterior of heavy vehicles, such as semitrucks, so that they are aerodynamically integrated along their entire length in a smooth, continuous fashion could reduce drag, increase fuel efficiency and cut carbon emissions. Using wind tunnel measurements and computational fluid dynamics simulations, Lawrence Livermore National Laboratory (LLNL) engineers have demonstrated...

Taking cues from nature, breakthrough ‘cellular fluidics’ technology could have sweeping impacts

June 30, 2021- 
Inspired by the way plants absorb and distribute water and nutrients, Lawrence Livermore National Laboratory (LLNL) researchers have developed a groundbreaking method for transporting liquids and gases using 3D-printed lattice design and capillary action phenomena. In a paper published today in Nature and featured on the publication’s cover, LLNL researchers describe 3D-printed micro...

LLNL’s Bill Pitz earns Department of Energy lifetime distinguished achievement award

June 29, 2021- 
Lawrence Livermore National Laboratory (LLNL) engineer Bill Pitz has earned a lifetime distinguished achievement award from the Department of Energy’s Vehicle Technologies Office (DOE VTO) for his significant contributions to the field of chemical kinetics. Pitz, along with retiree Charles Westbrook, produced a chemical kinetic study of fuel additives for engine knock in spark ignition...

New research proves quantum computing errors correlated, ties them to cosmic rays

June 28, 2021- 
Research by a Lawrence Livermore National Laboratory (LLNL) physicist and a host of collaborators is shedding new light on one of the major challenges to realizing the promise and potential of quantum computing — error correction. In a new paper published in Nature and co-authored by LLNL physicist Jonathan DuBois, scientists examined quantum computing stability, particularly what causes...

Virtual LLNL-UC Merced Data Science Challenge tackles asteroid detection though machine learning

June 25, 2021- 
Over three weeks, students from the University of California, Merced collaborated online with mentors at Lawrence Livermore National Laboratory (LLNL) to tackle a real-world challenge problem: using machine learning to identify potentially hazardous asteroids that could pose an existential threat to humanity. The Data Science Challenge was the third such annual event for LLNL and UC...

Scientists focus on cone targets to enhance temperature of electron beams

June 24, 2021- 
Intense short-pulse laser-driven production of bright high-energy sources, such as X-rays, neutrons and protons, has been shown to be an invaluable tool in the study of high energy density science. In an effort to address some of the most challenging applications, such as X-ray radiography of high areal density objects for industrial and national security applications, both the yield...

Lab names Rachelle Jeppson chief financial officer

June 23, 2021- 
Rachelle Jeppson has been selected as the chief financial officer (CFO) for Lawrence Livermore National Laboratory (LLNL), Director Kimberly Budil announced today. Her appointment will be effective June 27. As CFO, Jeppson will oversee the Lab’s $2.6 billion annual budget and will provide management and leadership for a large staff of financial professionals covering accounting, budget...

Scientists create a novel instrument to probe thermal states of extreme matter on Earth

June 23, 2021- 
Scientists at Lawrence Livermore National Laboratory (LLNL) have collaborated with Princeton Plasma Physics Laboratory (PPPL) to design a novel X-ray crystal spectrometer to provide high-resolution measurements of a challenging feature of high energy density (HED) matter produced by National Ignition Facility (NIF) experiments. The work is featured in a paper in the Review of Scientific...

New research identifies injury-induced molecular changes in chondrocytes, at single-cell level

June 21, 2021- 
Articular cartilage is a connective tissue lining the surfaces of joints. When the cartilage severely wears down, it leads to osteoarthritis (OA), a debilitating disease that affects millions of people globally. The articular cartilage is composed of a dense extracellular matrix (ECM) with a sparse distribution of cells found in healthy cartilage, also known as chondrocytes, with varying...

Lawrence Livermore team designs semiconductor switch for next-generation communications

June 18, 2021- 
Lawrence Livermore National Laboratory (LLNL) engineers have designed a new kind of laser-driven semiconductor switch that can theoretically achieve higher speeds at higher voltages than existing photoconductive devices. The development of such a device could enable next-generation satellite communication systems capable of transferring more data at a faster rate, and over longer distances...

LLNL/Tyvak space telescope goes into orbit

June 17, 2021- 
Thousands of images of Earth and space have been taken by a compact space imaging payload developed by Lawrence Livermore National Laboratory (LLNL) researchers and its collaborator Tyvak Nano-Satellite Systems. Known as GEOStare2, the payload has two space telescopes that together have taken more than 4,500 pictures for space domain awareness, astronomy and Earth observations that have...

Research highlights techniques for studying materials under extreme conditions

June 16, 2021- 
The properties of materials under extreme conditions are of key interest to a number of fields, including planetary geophysics, materials science and inertial confinement fusion (ICF). In geophysics, the equation of state of planetary materials such as hydrogen and iron under ultrahigh pressure and density will provide a better understanding of their formation and interior structure. I...

Army reservists a vital part of Lab’s workforce

June 14, 2021- 
Lawrence Livermore National Laboratory (LLNL) joins in the celebration of the U.S. Army birthday on June 14. Created in 1775, the army originally consisted of volunteer soldiers with roots to the Continental Army — and was formed to fight the Revolutionary War. Today, as the largest branch of the country’s military, the proud men and women of the U.S. Army continue to provide peace and...

Machine learning aids in materials design

June 10, 2021- 
A long-held goal by chemists across many industries, including energy, pharmaceuticals, energetics, food additives and organic semiconductors, is to imagine the chemical structure of a new molecule and be able to predict how it will function for a desired application. In practice, this vision is difficult, often requiring extensive laboratory work to synthesize, isolate, purify and...

From NIF to Z: LLNL continues to collaborate with Sandia on technology transfer projects

June 8, 2021- 
Lawrence Livermore National Laboratory (LLNL) and Sandia National Laboratories continue to collaborate on diagnostic advancements on the nation’s premier high-energy density (HED) facilities. Mark Bowers, magnetic direct drive diagnostics manager at the National Ignition Facility (NIF), said current projects include providing NIF’s X-ray streak camera, neutron Time-of-Flight (nToF)...

Lawrence Livermore team looks at nuclear weapon effects for near-surface detonations

June 7, 2021- 
A Lawrence Livermore National Laboratory (LLNL) team has taken a closer look at how nuclear weapon blasts close to the Earth’s surface create complications in their effects and apparent yields. Attempts to correlate data from events with low heights of burst revealed a need to improve the theoretical treatment of strong blast waves rebounding from hard surfaces. This led to an extension...

DOE honors two early career Lab scientists

June 4, 2021- 
Two scientists from Lawrence Livermore National Laboratory (LLNL) are recipients of the 2021 Department of Energy’s (DOE) Office of Science Early Career Research Program award. Andrea Schmidt and Xue Zheng are among 83 scientists nationwide selected for the recognition. Under the program, typical awards for DOE national laboratory staff are $500,000 per year for five years. The Early...

Smashing gold with finesse: Shockless compression experiments establish new pressure scales

June 3, 2021- 
To test the Standard Model of particle physics, scientists often collide particles using gigantic underground rings. In a similar fashion, high-pressure physicists compress materials to ever greater pressures to further test the quantum theory of condensed matter and challenge predictions made using the most powerful computers. Pressures exceeding 1 million atmospheres are capable of...

Decontaminating N95 masks for reuse

June 2, 2021- 
Scientists at Lawrence Livermore National Laboratory (LLNL) have determined that heating N95 respirators up to 75 degrees Celsius for 30 minutes deactivates a surrogate coronavirus without compromising the device’s fit and its ability to filter airborne particles. This temperature (equivalent to 167 degrees Fahrenheit) is easily achieved in hospitals and field settings allowing for the...

Research describes slow and fast light in plasma

June 1, 2021- 
Slow and fast light, or large changes in the group velocity of light, have been observed in a range of optical media, but the fine control over the refractive index necessary to induce an observable effect has not been achieved in a plasma. In a paper published in Physical Review Letters, scientists from Lawrence Livermore National Laboratory (LLNL) and the Laboratory for Laser...