“Nucleation” Cracks on the Surface of a Silicon Crystal

Influence of the crystallographic orientation of silicon on the formation of "primary" cracks

“…nucleating" cracks are formed when the barriers are broken [6,7]. FL is induced by confinement during cracking [8][9][10].…”

“…To detect and study the " primary" cracks on the surface (100) of silicon crystals in [8][9][10], fractoluminescence (FL) with time resolution 2 ns, white-light interference profilometry and photoluminescence methods were used. The question was: how the silicon surface orientation influences the formation of " primary" cracks"?…”

Formation of "primary" cracks upon fracture of quartz

“…Cracks in metals, polymers and crystals have been studied by now with a large number of methods: fractoluminescence (FL), electron microscopy, acoustic emission, X-ray microtomography, etc. [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. It is found that the crystal fracture process begins with the accumulation and consolidation of the smallest " primary" cracks with sizes of a few nm [6][7][8][9].…”

“…[1][2][3][4][5][6][7][8][9][10][11][12][13][14][15]. It is found that the crystal fracture process begins with the accumulation and consolidation of the smallest " primary" cracks with sizes of a few nm [6][7][8][9]. They are formed when dislocations break through barriers that prevent them from moving along sliding planes [6][7][8][9]16].…”

“…It is found that the crystal fracture process begins with the accumulation and consolidation of the smallest " primary" cracks with sizes of a few nm [6][7][8][9]. They are formed when dislocations break through barriers that prevent them from moving along sliding planes [6][7][8][9]16]. It is found that in a stressed solid, cracks first accumulate independently of each other throughout the volume, and then they merge [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15], enlarge and form a fracture centrea main crack.…”