LBNL Masthead A-Z IndexBerkeley Lab mastheadU.S. Department of Energy logoPhone BookJobsSearch
Science Highlights


Science highlights feature research conducted by staff and users at the ALS.

If a Power Point summary slide or a PDF handout of the highlight is available, you will find it linked beneath the highlight listing and on the highlight's page. You may also print a version of a highlight by clicking the print icon associated with each highlight.



Disorder-Induced Microscopic Magnetic Memory Print
Wednesday, 26 October 2005 00:00

The magnetic-recording industry deliberately introduces carefully controlled disorder into its materials to obtain the desired magnetic properties. But as the density of magnetic disks climbs, the size of the magnetic domains responsible for storage must decrease, posing new challenges.

Read more...
 
Femtosecond NEXAFS of Photoinduced Insulator-Metal Transition in VO2 Print
Wednesday, 28 September 2005 00:00

Researchers have taken a big step in femtosecond studies by adding femtosecond x-ray spectroscopy to the experimental toolkit with their first use of the laser-slicing technique to study the photoinduced metal–insulator phase transition in vanadium dioxide (VO2).

Read more...
 
Time-Resolved Study of Bonding in Liquid Carbon Print
Wednesday, 28 September 2005 00:00

We are accustomed to observing carbon in its elemental form as a solid, ranging from the soft "lead" in pencils to the precious gemstone in diamond rings. While considerable attention has been focused on solid forms of carbon, the properties of liquid carbon are much more difficult to measure accurately.

Read more...
 
Direct Imaging of Asymmetric Magnetization Reversal Print
Wednesday, 28 September 2005 00:00

By using x-ray photoemission electron microscopy at the ALS to directly image the magnetic structure of an exchange-biased film, a team from the University of Washington and the Stanford Synchrotron Radiation Laboratory has identified separate magnetic-reversal mechanisms in the two branches of a hysteresis loop.

Read more...
 
New Zone Plate for Soft X-Ray Microscopy at 15-nm Spatial Resolution Print
Wednesday, 31 August 2005 00:00

The XM-1 soft x-ray microscope at the ALS produces images that not only reveal structures but can identify their chemical elements and measure magnetic and other properties as well.

Read more...
 
Photoexcitation of a Volume Plasmon in Buckyballs Print
Wednesday, 31 August 2005 00:00

The latest results from a U.S.–German collaboration on the electronic structure of photoexcited buckyball ions show an additional resonance near 40 eV, characterized as a volume plasmon made possible by the special fullerene geometry.

Read more...
 
Enol Intermediates Unexpectedly Found in Flames Print
Wednesday, 27 July 2005 00:00

An international team of researchers has identified chemical compounds known as enols as apparently ubiquitous intermediates in flames burning a variety of fuels. This surprising observation will require combustion modelers to revise their models to account for the presence of these compounds.

Handout

Read more...
 
A Hollow-Ion Resonance of Unprecedented Strength Print
Wednesday, 29 June 2005 00:00

At the Ion-Photon Beamline at the ALS, researchers have detected in negative helium ions a resonant simultaneous double-Auger decay of unprecedented strength, evidence of a triply excited hollow-ion state that has eluded observation for 25 years.

Read more...
 
Composition and Reactions of Atmospheric Aerosol Particles Print
Wednesday, 29 June 2005 00:00

Microscopic aerosol particles in the atmosphere contain carbonaceous components from mineral dust and combustion emissions released from around the world. How long these tiny particles remain in the atmosphere can have a huge impact on the global climate.

Read more...
 
Energetics of Hydrogen Bond Network Rearrangements in Liquid Water Print
Wednesday, 25 May 2005 00:00

The unique chemical and physical properties of liquid water are thought to result from the highly directional hydrogen bonding (H-bonding) network structure and its associated dynamics. With the help of a novel liquid microjet apparatus, researchers derived a new energy criterion for H-bonds based on experimental data.

Read more...
 
Substrate Recognition Strategy for Botulinum Neurotoxin Print
Wednesday, 25 May 2005 00:00

Clostridal neurotoxins (CNTs) are the causative agents of the neuroparalytic diseases botulism and tetanus. Researchers from Stanford University have now determined the first structure of a CNT in complex with its target.

Read more...
 
How the Membrane Protein AmtB Transports Ammonia Print
Wednesday, 25 May 2005 00:00

While life scientists have solved the structures of protein channels for ions, uncharged solutes, and even water, up to now they have only been able to guess at the precise mechanisms by which gases cross biological membranes.

Read more...
 
Influence of Topological Spin Fluctuations on Charge Transport Print
Wednesday, 27 April 2005 00:00

Layered transition metal oxides are the focus of intense research efforts because they might clarify the superconducting mechanism of cuprate high-temperature superconductors (HTSCs).

Read more...
 
Electron Trapping by Molecular Vibration Print
Wednesday, 27 April 2005 00:00

In photoelectron spectroscopy experiments performed at the ALS, a group of researchers has found that electronic transitions normally thought to be forbidden can in fact be excited in conjunction with certain types of molecular vibrations.

Read more...
 
ARPES Provides Direct Evidence of Spin-Wave Coupling Print
Wednesday, 30 March 2005 00:00

The electronic properties of a metal are determined by the dynamical behavior of its conduction electrons. Conventional band theory accounts for the interaction of the electrons with the static ion lattice.

Read more...
 
<< Start < Prev 11 12 13 14 15 Next > End >>

Page 14 of 15