Microscopic sonic screwdriver invented

Microscopic sonic screwdriver invented: Engineers have created tiny acoustic vortices and used them to grip and spin microscopic particles suspended in water.

Tiny bacteria-powered windfarm

Tiny bacteria-powered 'windfarm' for your phone?: A team of scientists has shown how the natural movement of bacteria could be harnessed to assemble and power microscopic 'windfarms' -- or other human-made micromachines such as smartphone components.