Measuring electrical properties of methane hydrates leads to better understanding of gases in seafloors

Sept. 28, 2020- 
Methane hydrate is a crystalline solid formed from methane gas and water that occurs naturally in the seafloor of the continental shelves worldwide. Hydrate is considered a source of natural gas, a natural hazard or a potential contributor to ocean acidification and climate change. Its presence lowers the electrical conductivity of the seafloor in comparison to hydrate free formations...

LLNL researchers named to planetary science panels

Sept. 25, 2020- 
Lawrence Livermore National Laboratory (LLNL) geologist Lars Borg and physicist Megan Bruck Syal were named by the National Academies of Science to a pair of Planetary Science and Astrobiology Decadal Survey committees last week, Borg as a member of the survey’s steering committee and Syal as a member of the Small Solar System Bodies panel. Over the coming year, the two LLNL...

Going with the flow for water purification

Sept. 18, 2020- 
Membrane separations have become critical to human existence, with no better example than water purification. As water scarcity becomes more common and communities start running out of cheap available water, they need to supplement their supplies with desalinated water from seawater and brackish water sources. Lawrence Livermore National Laboratory (LLNL) researchers have created...

Antibiotic pre-treatment reduces joint inflammation

Sept. 16, 2020- 
Tearing an anterior cruciate ligament (ACL) can be an excruciatingly painful injury. Nearly 50 percent of these patients will develop a secondary form of osteoarthritis, deemed post-traumatic osteoarthritis (PTOA). Researchers from Lawrence Livermore National Laboratory (LLNL) and the UC Davis Medical Center have found that treatment with antibiotics prior to the injury could reduce...

A simple explanation to paradox of a spiraling football

Sept. 9, 2020- 
The hallmark of a perfectly thrown football is a tight spiraling of the tip around the trajectory of the parabolic path of flight. Why the tip follows the trajectory has presented a paradox for some time. A team of researchers, including Lawrence Livermore National Laboratory (LLNL) physicist Willy Moss, provided a simple resolution to this paradox in a paper published as an Editor’s...

Inspiring future physicist while exploring dark energy

Sept. 8, 2020- 
Doctoral student Victor Baules is spending his summer exploring the connection between dark energy and the expansion of our universe, but due to the pandemic, his research fellowship is more down-to-earth, taking place from his home in Alabama. Baules’ research trajectory in high-energy theory aligns with astrophysics research at Lawrence Livermore National Laboratory (LLNL), where...

Looking skin deep at the growth of neutron stars

Sept. 3, 2020- 
In atomic nuclei, protons and neutrons share energy and momentum in tight quarters. But exactly how they share the energy that keeps them bound within the nucleus — and even where they are within the nucleus — remain key puzzles for nuclear physicists. A new study by researchers at Lawrence Livermore National Laboratory (LLNL) and Washington University in St. Louis tackled these...

LLNL team wins FLC national award

Aug. 31, 2020- 
A shape memory foam material developed by Lawrence Livermore National Laboratory (LLNL) researchers is the foundation of a lifesaving medical device that has won a national technology transfer award. Researchers from LLNL, Santa Clara-based Shape Memory Medical Inc. and Texas A&M University incorporated the foam technology into the IMPEDE® Embolization Plug that prevents continued blood...

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...

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...

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...

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...

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...

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...