News

Research team pairs 3D bioprinting and computer modeling to examine cancer spread in blood vessels

Aug. 26, 2020- 
Lawrence Livermore National Laboratory (LLNL) scientists have paired 3D-printed, living human brain vasculature with advanced computational flow simulations to better understand tumor cell attachment to blood vessels, the first step in secondary tumor formation during cancer metastasis. The unique approach, developed with outside collaborators, lays the foundation for developing a predictive...

Update on operations impacted by regional fire

Aug. 23, 2020- 
The Laboratory continues to monitor regional fire and weather conditions. Until the evacuation warning affecting Site 300 is lifted, non-essential operations at the site will remain suspended. For Site 200, operations also will curtail if the nearby evacuation warning area is expanded to include the main Lab campus. Stand by for further announcements and please monitor local conditions and...

Simulations, high-speed videos help researchers see crack formation in 3D-printed tungsten in real time

Aug. 20, 2020- 
Boasting the highest melting and boiling points of all known elements, tungsten has become a popular choice for applications involving extreme temperatures, including lightbulb filaments, arc welding, radiation shielding and, more recently, as plasma-facing material in fusion reactors such as the ITER Tokamak. However, tungsten’s inherent brittleness, and the microcracking that occurs...

LLNL pairs world’s largest computer chip from Cerebras with Lassen to advance machine learning, AI research

Aug. 19, 2020- 
Lawrence Livermore National Laboratory (LLNL) and artificial intelligence (AI) computer company Cerebras Systems have integrated the world’s largest computer chip into the National Nuclear Security Administration’s (NNSA’s) Lassen system, upgrading the top-tier supercomputer with cutting-edge AI technology. Technicians recently completed connecting the Silicon Valley-based company’s...

LLNL joins new research on atom-changing pressures

Aug. 18, 2020- 
High energy density (HED) scientists at Lawrence Livermore National Laboratory (LLNL) have helped launch a new National Science Foundation (NSF) effort to understand the physical and astrophysical properties of matter under pressures strong enough to change the structure of individual atoms. The Center for Matter at Atomic Pressures (CMAP) is hosted by the University of Rochester in...

More than half the oceans impacted by climate change

Aug. 17, 2020- 
More than 50 percent of the world’s oceans already could be impacted by climate change, with this figure rising to 80 percent over the coming decades, a research team including Lawrence Livermore National Laboratory (LLNL) oceanographer Paul Durack has found, using global ocean salinity, temperature observations and a large suite of global climate models. The findings appear in the August 17...

Lab steps on the gas to enhance chemical production

Aug. 14, 2020- 
To optimize catalyst performance, a team of scientists from Lawrence Livermore National Laboratory (LLNL) and collaborators has developed a detailed understanding of the effect of pretreatment-induced nanoscale structural and compositional changes on catalyst activity and long-term stability. The research could make the production of the important industrial feedstock chemical...

Wheels keep turning on innovations for clean vehicles

Aug. 13, 2020- 
The Co-Optima FY19 Year in Review report released by the U.S. Department of Energy (DOE) describes recent accomplishments to improve efficiency while reducing emissions and cost for the entire on-road fleet of combustion-powered vehicles under the Co-Optimization of Fuels & Engines program. Lawrence Livermore National Laboratory (LLNL) is playing a key role in this research...

‘Expanding Your Horizons’ goes virtual for 2020

Aug. 12, 2020- 
The San Joaquin Expanding Your Horizons (SJEYH) is going virtual for 2020. Registration opens Aug. 15 for the virtual event on Saturday, Sept. 19, from 9 a.m. to 1:30 p.m. This year marks the 28th year for SJEYH, a conference with a long history of inspiring young women and fostering awareness of careers in science, technology, engineering and math (STEM). The event usually draws more...

SPIE honors Richard Leach with senior member designation

Aug. 11, 2020- 
SPIE, the International Society for Optics and Photonics, recently announced the election of Lawrence Livermore National Laboratory (LLNL) research engineer Richard Leach as a senior member of the organization. SPIE recognizes senior members based on exceptional professional experience, active involvement with the optics community and/or significant performance that sets them apart...

Laboratory team completes highest-ever resolution quake simulations using Sierra supercomputer

Aug. 11, 2020- 
A Lawrence Livermore National Laboratory (LLNL) team has published new supercomputer simulations of a magnitude 7.0 earthquake on the Hayward Fault. This work represents the highest-ever resolution ground motion simulations from such an event on this scale.  The study used the SW4 code developed at LLNL. Simulations resolved rapidly varying shaking with broader band frequencies up to...

Using models, 3D printing to study common heart defect

Aug. 10, 2020- 
One of the most common congenital heart defects, coarctation of the aorta (CoA) is a narrowing of the main artery transporting blood from the heart to the rest of the body. It affects more than 1,600 newborns each year in the United States, and can lead to health issues such as hypertension, premature coronary artery disease, aneurysms, stroke and cardiac failure. To better understand...

Scientists encouraged by Frustraum experiments at NIF

Aug. 7, 2020- 
Initial NIF experiments using a full-scale version of the Frustraum hohlraum have produced nearly round inertial confinement fusion (ICF) implosions and more laser-induced energy absorption by the fuel-filled capsule. National Ignition Facility (NIF) researchers are optimistic that results from the initial tests of the novel angular-shaped hohlraum could create more promising paths forward...

Neuronal cultures advance ‘brain-on-a-chip’ technology

Aug. 6, 2020- 
Lawrence Livermore National Laboratory (LLNL) researchers have increased the complexity of neuronal cultures grown on microelectrode arrays, a key step toward more accurately reproducing the cellular composition of the human brain outside the body.   As described in a recently published paper in Scientific Reports, an LLNL team led by biomedical scientist Heather Enright cultured rodent...

Record EOS measurement pressures shed light on stellar evolution

Aug. 5, 2020- 
Using the power of the National Ignition Facility (NIF), the world’s highest-energy laser system, researchers at Lawrence Livermore National Laboratory (LLNL) and an international team of collaborators have developed an experimental capability for measuring the basic properties of matter, such as the equation of state (EOS), at the highest pressures thus far achieved in a controlled...

Compressive shearing may start life on other planets

Aug. 4, 2020- 
Massive compressive shearing forces generated by the tidal pull of Jupiter-like planets on their rocky ice-covered moons may form a natural reactor that drives simple amino acids to polymerize into larger compounds. These extreme mechanical forces strongly enhance molecule condensation reactions, opening a new arena of possibilities for the chemical origins of life on Earth and other rocky...

Doctoral fellow improves codes used to simulate interactions between particles moving at high velocities

Aug. 3, 2020- 
Doctoral student Marco Echeverria is spending his second summer conducting research for Lawrence Livermore National Laboratory (LLNL), but this year his summer experience is taking place at a distance from his home in Connecticut. Echeverria is one of hundreds of LLNL summer students who needed to shift to a virtual internship or fellowship due to the pandemic. “The connections I built...

LLNL researchers achieve greater understanding of color origins in low-power electronic displays

July 31, 2020- 
Today’s low-power, electronic ink displays such as e-book readers produce text through a process called electrophoretic deposition (EPD). Each pixel of the display contains charged black and white particles suspended in a liquid solvent. These particles are moved by electrodes embedded in the devices, causing particles to stick to the electrodes to form words or images. The displays change...

Lab assists in NASA launch of Mars rover

July 30, 2020- 
When an Atlas V-541 rocket lifted off Thursday morning (July 30) for Mars from Cape Canaveral Air Force Station with the Perseverance rover in tow, two Lawrence Livermore National Laboratory (LLNL) scientists had front row seats. The pair, Steve Homann and Jessica Osuna, researchers in the Lab’s National Atmospheric Release Advisory Center (NARAC), part of the Nuclear Emergency...

3D nanometer-thin membrane borrows from biology

July 30, 2020- 
Mimicking the structure of the kidney, a team of scientists from Lawrence Livermore National Laboratory (LLNL) and the University of Illinois at Chicago (UIC) have created a three-dimensional nanometer (nm)-thin membrane that breaks the permeance-selectivity trade-off of artificial membranes. Highly permeable and selective membranes are useful for a wide range of applications, such as...