STR Health Abbreviation

Strain

The amount by which something has changed length, measured as a percentage of its original length. The amount of elongation or compression that occurs in a metal at a given stress or load. Generally in terms of inches elongation per inch of material. Strain semiconductors, strained either by external forces or due to lattice mismatched epitaxial growth, have modified band struc-tures, especially the band gap and effective masses.