Phys. Rev. Focus22, 9 (2008) – Published September 16, 2008
Researchers measured the interaction between surface plasmons–electron waves on metal surfaces–with excitons, excited states of electrons in semiconductors. Understanding the communication between the two could improve solar cells and speed up electronic and optical devices.
Phys. Rev. Focus22, 7 (2008) – Published August 27, 2008
Slow-moving nanoparticles hitting a surface bounce away, but surprisingly, fast-moving ones stick. New simulations explain that the sticking occurs because the fast particles absorb the collision energy by transforming their atomic structure.
Phys. Rev. Focus22, 4 (2008) – Published July 25, 2008
Theorists predict that collisions can briefly create a beryllium nucleus in which neutrons bind two clumps of particles together the way electrons bind atoms into a molecule–in three very different configurations.
Phys. Rev. Focus22, 3 (2008) – Published July 18, 2008
The mixture of a superconductor and a superfluid–as may occur inside a neutron star–could respond to the star’s magnetic field in ways never seen in earthly superconductors, according to a new theory. The strange material doesn’t fit into the two standard superconducting categories.
Phys. Rev. Focus21, 21 (2008) – Published June 25, 2008
A new theory on the interactions of nanoparticles with laser light predicts some surprising effects when more than one particle is involved, such as a particle being drawn toward the source of the beam, against the flow of photons.
Phys. Rev. Focus21, 17 (2008) – Published May 21, 2008
Electrons can act like light waves in many ways, but according to recent experiments, their wave-like effects don’t always correspond with light. The unexpected behavior occurs because electrons feel each other’s presence, while photons do not.
Phys. Rev. Focus21, 14 (2008) – Published April 23, 2008
Ghost imaging, in which images are made using light that never came near the object, has now been demonstrated with reflected light, but the debate continues over whether the effect can be explained with classical physics.
Phys. Rev. Focus21, 13 (2008) – Published April 17, 2008
Researchers used a magnetic material to create a difference in current-carrying properties between two perpendicular directions in a superconductor. They could easily change the directions with an external magnetic field, which could be useful in superconducting devices.
Phys. Rev. Focus21, 12 (2008) – Published April 7, 2008
Researchers have simulated the formation of complex shapes formed spontaneously by sheets of polymers in solution. The results provide a recipe for experimentalists that are studying these structures for drug delivery and nanofabrication.