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The Lead

Salinity matters when it comes to sea level changes

November 21, 2014 9:33 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Using ocean observations and a large suite of climate models, Lawrence Livermore National Laboratory (LLNL) scientists have found that long-term salinity changes have a stronger influence on regional sea level changes than previously thought.

Uncrackable code developed for nuclear weapons

November 20, 2014 10:07 am | by Breanna Bishop, Lawrence Livermore National Laboratory | Videos | Comments

Mark Hart, a scientist and engineer at Lawrence Livermore National Laboratory, has been awarded...

Black hole loses its appetite for gassy cloud

November 19, 2014 8:22 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

In a showdown of black hole versus G2—a cloud of gas and dust—it looks like G2 won. Recent...

Efficient method developed to measure residual stress in 3-D printed parts

November 17, 2014 10:08 am | by Kenneth Ma, LLNL | News | Comments

Lawrence Livermore National Laboratory researchers have developed an efficient method to measure...

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LLNL, IBM to deliver next-generation supercomputer

November 14, 2014 11:01 am | by Lynda L. Seaver, Lawrence Livermore National Laboratory | News | Comments

Lawrence Livermore National Laboratory (LLNL) announced a contract with IBM to deliver a next-generation supercomputer in 2017. The system, to be called Sierra, will serve the National Nuclear Security Administration’s Advanced Simulation and Computing program. Procurement of Sierra is part of a DOE-sponsored Collaboration of Oak Ridge, Argonne and Lawrence Livermore national labs to accelerate the development of high-performance computing.

Shifts in states of matter: It’s complicated

November 7, 2014 3:23 pm | by Anne M. Stark, LLNL | News | Comments

The process of phase changes- those transitions between states of matter- is more complex than previously thought. A team researchers has found that we may need to rethink one of science’s building blocks and illustrate how a proper theoretical description of transitions has remained unclear.

Tiny nanopores make big impact

October 30, 2014 8:05 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

A team led by the Lawrence Livermore National Laboratory scientists has created a new kind of ion channel consisting of short carbon nanotubes, which can be inserted into synthetic bilayers and live cell membranes to form tiny pores that transport water, protons, small ions and DNA. These carbon nanotube “porins” have significant implications for future health care and bioengineering applications.

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Strengthening thin-film bonds with ultra-fast data collection

October 23, 2014 8:29 am | by Michael Baum, NIST | News | Comments

When studying extremely fast reactions in ultra-thin materials, two measurements are better than one. A new research tool invented by researchers at Lawrence Livermore National Laboratory (LLNL), Johns Hopkins Univ. and NIST captures information about both temperature and crystal structure during extremely fast reactions in thin-film materials.

Supercomputers link proteins to drug side effects

October 21, 2014 8:48 am | by Kenneth Ma, LLNL | News | Comments

New medications created by pharmaceutical companies have helped millions of Americans alleviate pain and suffering from their medical conditions. However, the drug creation process often misses many side effects that kill at least 100,000 patients a year, according to Nature.

Energy storage of the future

October 20, 2014 7:55 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Personal electronics such as cell phones and laptops could get a boost from some of the lightest materials in the world. Lawrence Livermore National Laboratory researchers have turned to graphene aerogel for enhanced electrical energy storage that eventually could be used to smooth out power fluctuations in the energy grid.

LLNL, UC Davis partner to personalize cancer medications

October 17, 2014 8:27 am | by Stephen P Wampler, Lawrence Livermore National Laboratory | News | Comments

Buoyed by several dramatic advances, Lawrence Livermore National Laboratory (LLNL) scientists think they can tackle biological science in a way that couldn't be done before. Over the past two years, LLNL researchers have expedited accelerator mass spectrometer sample preparation and analysis time from days to minutes and moved a complex scientific process requiring accelerator physicists into routine laboratory usage.

Biological sample prep time cut dramatically

October 16, 2014 8:40 am | by Stephen P Wampler, Lawrence Livermore National Laboratory | News | Comments

When Lawrence Livermore National Laboratory researchers invented the field of biological accelerator mass spectrometry (AMS) in the late 1980s, the process of preparing the samples was time-consuming and cumbersome. Physicists and biomedical researchers used torches, vacuum lines, special chemistries and high degrees of skill to convert biological samples into graphite targets that could then be run through the AMS system.

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Serendipitous holography reveals hidden cracks in shocked targets

October 15, 2014 8:35 am | by Breanna Bishop, Lawrence Livermore National Laboratory | News | Comments

In a recent article published in the Review of Scientific Instruments, a research team led by scientists at Lawrence Livermore National Laboratory describe a technique for 3-D image processing of a high-speed photograph of a target, "freezing" its motion and revealing hidden secrets. This technique is particularly applicable in targets that are "shocked."

Ocean warming in Southern Hemisphere underestimated

October 6, 2014 8:45 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Using satellite observations and a large suite of climate models, Lawrence Livermore National Laboratory scientists have found that long-term ocean warming in the upper 700 m of Southern Hemisphere oceans has likely been underestimated.

Calculating conditions at the birth of the universe

August 26, 2014 8:06 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Using a calculation originally proposed seven years ago to be performed on a petaflop computer, Lawrence Livermore National Laboratory researchers computed conditions that simulate the birth of the universe. When the universe was less than one microsecond old and more than one trillion degrees, it transformed from a plasma of quarks and gluons into bound states of quarks.

Precision Optics in One Step

August 25, 2014 2:31 pm | Award Winners

Lawrence Livermore National Laboratory scientists have developed a new polishing system capable of finishing flat and spherical glass optics in a single iteration, regardless of the workpieces’ initial shape. Convergent Polishing: Rapid, Simple, Low Cost Finishing of High Quality Glass Optics is able to “converge” several steps because factors contributing to non-uniform spatial material removal on the workpiece have been eliminated and the creation of rogue particles within the polisher system have been removed.

Powerful Single-output Laser

August 21, 2014 3:36 pm | Award Winners

Spectral beam combining (SBC) of fiber lasers offers a straightforward approach for power scaling. The approach exploits the broad gain bandwidth to enable large numbers of fiber laser channels to be combined with near-diffraction-limited beam quality. Rigorous application of SBC has allowed a development team including Lawrence Livermore National Laboratory, Lockheed Martin Laser and Sensor Systems and Advanced Thin Films to develop the EXtreme-power, Ultra-low-loss, Dispersive Element (EXUDE) optical element, the first-ever electrically efficient, near diffraction-limited 30-kW beam combined laser.

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microTLC Fills Gaps in Detection

August 21, 2014 11:57 am | Award Winners

Filling major gaps in field testing for explosives and narcotics, Lawrence Livermore National Laboratory’s microTLC is a miniaturized, field-portable thin layer chromatography (TLC) kit used to detect and identify unknowns. Originally developed to identify military explosives, the device has been modified to also identify and determine the purity of illicit drugs, pesticides and other compounds.

Researchers create engineered energy-absorbing material

August 20, 2014 9:36 am | by James A Bono, LLNL | News | Comments

Materials like solid gels and porous foams are used for padding and cushioning, but each has its own advantages and limitations. To overcome limitations, a team from Lawrence Livermore National Laboratory has found a way to design and fabricate, at the microscale, new cushioning materials with a broad range of programmable properties and behaviors that exceed the limitations of the material's composition through 3-D printing.

X-rays Provide Higher Energy Resolution

August 19, 2014 10:52 am | Award Winners

X-ray spectroscopy is widely used to determine the elemental and chemical composition of materials. However, Lawrence Livermore National Laboratory and STAR Cryoelectronics LLC’s Superconducting Tunnel Junction (STJ) X-ray Spectrometer offers more than 10 times higher energy resolution than current x-ray spectrometers based on silicon or germanium semiconductors.

New material could be used for energy storage, conversion

August 13, 2014 11:50 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Lawrence Livermore National Laboratory researchers have made a material that is 10 times stronger and stiffer than traditional aerogels of the same density. This ultra-low-density, ultra-high surface area bulk material with an interconnected nanotubular makeup could be used in catalysis, energy storage and conversion, thermal insulation, shock energy absorption and high energy density physics.

Peering into giant planets from in and out of this world

July 18, 2014 8:40 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Lawrence Livermore National Laboratory scientists for the first time have experimentally re-created the conditions that exist deep inside giant planets, such as Jupiter, Uranus and many of the planets recently discovered outside our solar system. Researchers can now re-create and accurately measure material properties that control how these planets evolve over time, information essential for understanding how these massive objects form.

Understanding how the brain retrieves memories

July 17, 2014 8:07 am | by Donald B Johnston, LLNL | News | Comments

Lawrence Livermore National Laboratory scientists are developing electrode array technology for monitoring brain activity as part of a collaborative research project with the Univ. of California San Francisco (UC San Francisco) to better understand how the neural circuitry of the brain works during memory retrieval.

Technology could screen for emerging viral diseases

July 15, 2014 11:58 am | by Stephen P Wampler, Lawrence Livermore National Laboratory | News | Comments

A microbe detection array technology developed by Lawrence Livermore National Laboratory (LLNL) scientists could provide a new rapid method for public health authorities to conduct surveillance for emerging viral diseases. This possible use of the Lawrence Livermore Microbial Detection Array (LLMDA) was studied by an international team of researchers from eight nations in a paper published in the PLOS ONE.

Labs characterize carbon for batteries

July 15, 2014 8:04 am | by Mike Williams, Rice Univ. | News | Comments

Lithium-ion batteries could benefit from a theoretical model created at Rice Univ. and Lawrence Livermore National Laboratory that predicts how carbon components will perform as electrodes. The model is based on intrinsic electronic characteristics of materials used as battery anodes. These include the material’s quantum capacitance and the material’s absolute Fermi level.

Scientists measure rock in a hard place

July 9, 2014 8:11 am | by Anne M. Stark, Lawrence Livermore National Laboraotry | News | Comments

Measuring the extreme pressures and temperatures of hydrothermal systems in the Earth's crust is no easy feat. However, Lawrence Livermore National Laboratory scientists have made a new tool that allows them to probe pressures up to 20 kbar (20,000 Earth atmospheres of pressure).

Researchers define boundaries of petawatt laser absorption

June 24, 2014 8:34 am | by Breanna Bishop, Lawrence Livermore National Laboratory | News | Comments

The absorption of petawatt laser light by solid matter is a crucial problem that has been the subject of theoretical and experimental study for more than two decades. In a newly published paper, Lawrence Livermore National Laboratory scientists have defined, for the first time, a set of theoretical boundaries for the absorption of petawatt laser light.

Researchers develop new ultra-light, ultra-stiff 3-D printed materials

June 19, 2014 4:11 pm | by Kenneth Ma, LLNL | News | Comments

Imagine a material with the same weight and density as aerogel—a material so light it's called “frozen smoke”—but with 10,000 times more stiffness. This material could have a profound impact on the aerospace and automotive industries as well as other applications where lightweight, high-stiffness and high-strength materials are needed.

Technology detects bacterial pathogens in soldiers’ combat wounds

June 17, 2014 8:40 am | by Stephen P Wampler, Lawrence Livermore National Laboratory | News | Comments

A biological detection technology developed by Lawrence Livermore National Laboratory scientists can detect bacterial pathogens in the wounds of U.S. soldiers that have previously been missed by other technologies. This advance may, in time, allow an improvement in how soldiers' wounds are treated.

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