Dislocations are lines of irregularity in the structure of a solid analogous to the bumps in a badly laid carpet. Like these bumps they can be easily moved, and they provide the most important mechanism by which the solid can be deformed. They also have a strong influence on crystal growth and on the electronic properties of semiconductors.* Influence of dislocations on piezoelectric behavior* New mechanisms for hardening in twinned crystals* Bringing theories of martensite transformation into agreement* Atomic scale motion of dislocations in electron microscopy* Dislocation patterns deduced from X-ray diffraction* Role of dislocations in friction* Dislocation motion in quasicrystals
