Silicon Surface Density
(100)
(
The silicon cell’s (100) plane surface density: 2 0.543 × 10−7 cm
)
2
= 6.78 × 1014 atom cm 2
a/ 2
a
(110)
The silicon cell’s (110) surface density:
(
)
4 0.543 × 0.543 2 × 10 −14 cm 2 = 9.6 × 1014 atom cm 2
Density:
(110)>(111)>(100)
(111)
The silicon cell’s (111) surface density: 7.8×1014atom/cm2
1
The shear strength of (110) is less than that of (100)
2