Discussion on the limitations of "in situ" deformation experiments in a high voltage electron microscope

Radiation damage as well as surface effects are two possible limitations of the "in situ" straining experiment in a high voltage electron microscope. The optimum experimental conditions and a few approximate criteria to be fulfilled are described, using the data presently available. In these criteria are involved the operating conditions of the microscope, the temperature, the geometry and properties of the material investigated.