91福利

Until now, electron diffraction has not determined atomic positions in a crystal to the same accuracy (10^-13 m) as X-rays. We describe a new method which does this and more.

Relaxor ferroelectrics have useful behaviour not yet fully understood. We used electron diffraction to show that ferroelectric behaviour in PST is actually due to two coupled antiferroelectric modes.

Nanowires should be defect-free since they expel defects with strain fields. However, we found new types of defect with zero Burgers vector and no strain field in GaAs nanowires.

Tests of quantum coherence could demonstrate biological systems exploiting quantum phenomena. This paper discusses such tests and how the role the environment must be considered to witness coherence.