A new technique measures each unit of charge that accumulates on a submerged plastic bead, unprecedented resolution for a liquid-solid interface and an experiment that may benefit a variety of commercial devices and processes.
An improved version of a technique for folding tiny objects from a thin membrane uses a magnetic field to affect the shape. The membrane wraps around a droplet of fluid that distorts in response to the field.
Phys. Rev. Focus28, 12 (2011) – Published September 23, 2011
Experimentalists have mapped the quantum states (band structure) of cold atoms mimicking electrons in a crystal. The technique should allow researchers to study new aspects of electrons in crystals using the atoms as a model.