A billon-frames-per-second film has captured the vibrations of gold nanocrystals in stunning detail for the first time.
May 23, 2013
5 / 5 (9)
1
|
(Phys.org) —SLAC researchers have demonstrated for the first time how to produce pairs of X-ray laser pulses in slightly different wavelengths, or colors, with finely adjustable intervals between them – ...
Mar 27, 2013
5 / 5 (3)
0
|
When a crystal is hit by an intense ultrashort light pulse, its atomic structure is set in motion. A team of scientists from the Max Planck Institute of Quantum Optics (MPQ), the Technischen Universität ...
Mar 01, 2013
5 / 5 (2)
0
|
(Phys.org)—With SLAC's Linac Coherent Light Source X-ray laser, timing is everything. Its pulses are designed to explore atomic-scale processes that are measured in femtoseconds, or quadrillionths of a ...
Feb 20, 2013
5 / 5 (3)
0
|
Specially shaped laser pulses can be used to change the state of electrons in a molecule. This process only takes several attoseconds—but it can initiate another, much slower process: The splitting of the ...
Dec 12, 2012
5 / 5 (5)
0
|
With their ultra short X-ray flashes, free-electron lasers offer the opportunity to film atoms in motion in complicated molecules and in the course of chemical reactions. However, for monitoring this motion, ...
Dec 03, 2012
not rated yet
0
Electrons move extremely rapidly inside atoms and molecules (the order of magnitude is the attosecond, i.e. 10-18 of a second). One way to observe these phenomena is to use isolated ultrashort pulses of light, which are ...
Nov 30, 2012
5 / 5 (1)
1
With their ultra short X-ray flashes, free-electron lasers offer the opportunity to film chemical reactions or atoms in motion. However, for this super slow motion the arrival time and the temporal profile ...
Nov 20, 2012
5 / 5 (1)
0
(Phys.org)—Scientists from TU Berlin, DESY and the University of Paris discovered a surprising effect in the demagnetisation of ferromagnetic materials at DESY's free-electron laser FLASH. The team of researchers ...
Oct 03, 2012
3.5 / 5 (2)
0
A team of German researchers at KIT directed by Professor Christian Koos has succeeded in developing a novel optical connection between semiconductor chips. "Photonic wire bonding" reaches data transmission ...
Sep 20, 2012
5 / 5 (11)
1
|
Back in the first half of the 20th century, when MIT's famed Harold "Doc" Edgerton was perfecting his system for capturing fast-moving events on film, the ability to observe changes unfolding at a scale of ...
Sep 18, 2012
4.3 / 5 (4)
0
Topological insulators are exotic materials, discovered just a few years ago, that hold great promise for new kinds of electronic devices. The unusual behavior of electrons within them has been very difficult ...
Sep 18, 2012
4.5 / 5 (8)
2
|
(Phys.org)—Using ultra-low input power densities, researchers at the University of Illinois at Urbana-Champaign have demonstrated for the first time how low-power "optical nanotweezers" can be used to trap, ...
Sep 17, 2012
5 / 5 (2)
0
|
On the night of July 20, 2012, the laser system of the Berkeley Lab Laser Accelerator (BELLA), which is nearing completion at the Lawrence Berkeley National Laboratory, delivered a petawatt of power in a pulse ...
Jul 27, 2012
5 / 5 (9)
8
|
The mitotic spindle, an apparatus that segregates chromosomes during cell division, may be more complex than the standard textbook picture suggests, according to researchers at the Harvard School of Engineering ...
Apr 26, 2012
5 / 5 (5)
0
|
