Physics
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21 hours ago | News
Scientists
at the Georgia Institute of Technology recently achieved a 17% increase
in boiling efficiency by using an acoustic field to enhance heat
transfer. The acoustic field does this by efficiently removing vapor
bubbles from the heated surface and suppressing the formation of an
insulating vapor film.
May 24 | News
In
quantum physics physical processes in condensed matter and other
many-body systems can often be described with quasiparticles. For the
first time, a team of physicists in Austiri has succeeded in
experimentally realizing a new quasiparticle— a repulsive polaron—in an
ultracold quantum gas.
May 24 | News
Dark
matter accounts for at least 80% of the matter in the universe. No one
knows what it is, but most scientists would bet on weakly interacting
massive particles, or WIMPs. LUX, the Large Underground Xenon detector
at the Sanford Underground Research Facility nearly a mile below the
Black Hills of South Dakota, holds 350 kg of liquid xenon and is a trap
set for dark-matter WIMPs.
May 21 | News
In
experiments with gamma rays in France, researchers have recently proven
that these extremely high-energy electromagnetic waves can be focused
by lenses like conventional light. This finding that gamma rays can be
refracted overturns a fundamental assumption of theoretical physics.
May 16 | News
An
international team of researchers has used SLAC’s Linac Coherent Light
Source (LCLS) to discover never-before-seen behavior by electrons in
complex materials known for their strongly correlated structures. The
unusual qualities of these materials, which include oxides such as
striped nickelate, stem from the collective behavior of their electrons.
May 15 | News
A
strong laser beam can remove an electron from an atom, a process that
occur almost instantaneously. Researchers in Austria have been able to
study this phenomenon with a time resolution of less than 10
attoseconds, allowing them to observe the atom being ionized and the
free electron being “born”.
Apr 27 | News
A
ring resonator is a key laser key component that plays a dual role by
acting both as a filter and a non-linear element. For the first time,
researchers have successfully integrated a resonator and a micro-ring in
the laser component that makes it possible to better control the light
source. This improvement in stability and precision should allow
designers to introduce ultra-small laser assemblies.
Apr 22 | News
Using
high-energy X-rays on a solid copper-oxide compound, researchers in Europe report witnessing the decay of an electron into two separate
parts, each carrying a particular property of the electron. One piece
is a spinon, which carries the electron’s spin, and the other is the
orbiton, which carries its orbital moment. The findings are the first
empirical evidence of the splitting on an electron in a material.
Apr 17 | News
Researchers in Spain have recently proved, mathematically, that particles charged
in a magnetic field can escape into infinity without ever stopping. When
this happens, under a certain set of conditions, particles will either
never stop, as in a loop, or actually escape the limits of a spherical
surface, no matter how big the surface may be.
Apr 16 | News
Nuclear
physicists at Michigan State University recently witnessed an atomic
nucleus do something that nobody had ever seen one do before—emit two
neutrons at the same time. The experiment revealed a brand new form of
nuclear emission, dineutron decay.
