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.



A Microscopic Double-Slit Experiment Print
Wednesday, 29 February 2012 00:00

In a new twist on Young's classic double-slit experiment, researchers have shown that the double slits can be replaced by electron-emitting diatomic molecules and that traces of electron-wave interference can be directly observed in measurements of the vibrationally resolved photoionization spectra.

Summary Slide Handout

Read more...
 
Signal Recognition Particle-Receptor Complex Structure Solved Print
Monday, 27 February 2012 15:06

The signal recognition particle (SRP) transfers new proteins around cells. The newly solved crystal structure of SRP in action exposes new information about its structure and mechanism in this essential and highly-conserved process of co-translational protein targeting.

Summary Slide Handout

Read more...
 
Direct Kinetic Measurements of a Criegee Intermediate Print
Wednesday, 25 January 2012 00:00

"Criegee intermediates" are elusive molecules that play a pivotal role in atmospheric chemistry and are also byproducts of key combustion reactions. At the Chemical Dynamics Beamline, the reaction rates of one form of Criegee intermediate was directly measured for the first time, with some surprising results.

Summary Slide Handout

Read more...
 
Structure of DNA-Bound FEN1 Reveals Mechanism of Action Print
Tuesday, 24 January 2012 11:30

Among the legions of proteins required for DNA replication, the “flap endonuclease” FEN1 plays a key role. An international team of scientists working at the SIBYLS Beamline has now solved the structure of human FEN1 bound to DNA, revealing the surprising mechanism behind its speed, accuracy, and versatility.

Summary Slide Handout

Read more...
 
Two Phase Transitions Make a High-Temperature Superconductor Print
Wednesday, 30 November 2011 00:00

Three research groups joined forces to show that high-temperature (high-Tc) cuprate superconductors undergo two phase transitions: one to the superconducting phase and another at a higher temperature, below which electrons, instead of pairing up, organize themselves in a drastically different, yet still elusive, way.

Summary Slide Handout

Read more...
 
Dynein Motor Domain Shows Ring-Shaped Motor, Buttress Print
Monday, 28 November 2011 14:52

Motor proteins convert energy into a series of small conformational changes that allow them to literally “walk” along microscopic tracks and move cargo around cells. A newly-discovered crystal structure of the motor protein dynein reveals details of its ring-shaped motor as well as an unanticipated feature called the "buttress."

Summary Slide Handout

Read more...
 
Lensless X-Ray Imaging in Reflection Print
Wednesday, 26 October 2011 00:00

Recently, researchers from the ALS and the University of Oregon have shown that it is possible to form x-ray holograms in reflection geometry, opening the door to single-shot, high-resolution lensless imaging of a wealth of new material samples.

Summary Slide Handout

Read more...
 
Direct Imaging of Antiferromagnetic Vortex States Print
Wednesday, 28 September 2011 00:00

Despite intensive activity in the study of ferromagnetic (FM) vortex states, there has been no direct observation of such states in antiferromagnetic (AFM) microstructures. Researchers have now taken the first direct images of two types of AFM vortex states, one of which has no FM analogue.

Summary Slide Handout

Read more...
 
Bioactive Glass Scaffolds for Bone Regeneration Print
Wednesday, 28 September 2011 00:00

Natural materials are renowned for their unique combination of outstanding mechanical properties and exquisite microstructure. Researchers at Beamline 8.3.2 have created bioactive glass scaffolds that mirror nature's efficient materials and may provide a means for previously-problematic bone regeneration in large, load-bearing limbs.

Summary Slide Handout

Read more...
 
Mineral Deformation at Earth's Core–Mantle Boundary Print
Wednesday, 31 August 2011 00:00

At Earth's core–mantle boundary, seismic waves travel faster in certain directions. This appears to be related to the deformation of constituent minerals. To better understand, researchers re-created the ultrahigh pressures of the deep Earth while conducting x-ray diffraction experiments to probe changes in crystal orientations.

Summary Slide Handout

Read more...
 
Large Magnetization at Carbon Surfaces Print
Wednesday, 31 August 2011 00:00

From organic matter to pencil lead, carbon is a versatile element. Now, another use has been found: magnets. Researchers studying the effects of protons on the electronic structure of graphite found very strong magnetization when hydrogen atoms are incorporated at the surface of graphite.

Summary Slide Handout

Read more...
 
Inhibiting Individual Notch Receptors Improves Treatment Print
Wednesday, 27 July 2011 00:00

Aberrant activation of Notch receptors has been linked to many diseases, making the Notch pathway a compelling target for new drug studies. Researchers have synthesized highly specialized antibody inhibitors that act only on Notch1 or Notch2 through a potent and novel mechanism of inhibition.

Summary Slide Handout

Read more...
 
Regarding Confinement Resonances Print
Wednesday, 27 July 2011 00:00

When an x-ray photon boosts an electron from an unreactive gas atom trapped in a carbon cage, the electron waves might be transmitted through or reflected off the cage. In the first experimental test of this "confinement resonance" theory, an international team produced and isolated xenon endofullerenes and observed confinement resonances.

Summary Slide Handout

Read more...
 
Direct-Write of Silicon and Germanium Nanostructures Print
Wednesday, 29 June 2011 00:00

A new strategy to "write" electronic silicon and germanium nanostructures could simplify nanomaterial electronic circuit fabrication by circumventing the difficult assembly step. PEEM-2 and PEEM-3 confirm the quality of the written nanostructures.

Summary Slide Handout

Read more...
 
Two Novel Ultra-Incompressible Materials Print
Wednesday, 29 June 2011 00:00

Materials that are mechanically, thermally, and chemically stable at extreme conditions are valuable for applications in aerospace engineering and fission/fusion research. A research team has now synthesized and characterized two novel materials that fit the bill: Rhenium nitrides Re2N and Re3N are both extremely incompressible.

Summary Slide Handout

Read more...
 
<< Start < Prev 1 2 3 4 5 6 7 8 9 10 Next > End >>

Page 5 of 15