Modification of electromagnetic zero-point fluctuations by closely spaced conductors causes an interaction between them called the Casimir force. New experiments with nanostructured silicon substrates show that the geometry of the conducting surfaces has a large effect on this force.
Single photon emission is normally only observed in systems, such as atoms, that are quantum confined in all directions. Now, scientists have shown that carbon nanotubes, which are quasi-one-dimensional materials, can also act as single photon emitters.
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.