A team of scientists led by the Department of Applied
Physics at Osaka University, the Department of Physics and
Electronics at Osaka Prefecture University, and the Department of
Materials Chemistry at Nagoya University used photoinduced force
microscopy to map out the forces acting on quantum dots in three
dimensions. By eliminating sources of noise, the team was able to
achieve subnanometer precision for the first time ever, which may
lead to new advances in photocatalysts and optical
tweezers.