The cleavage energy at initiation of (110) silicon

Error estimates for density-functional theory predictions of surface energy and work function

“…Moreover, the anisotropy found by Eaglesham et al [73] in the crystallite shape, is reproduced by the DFT calculations. When alternative experimental data for Si{110} are also included into the comparison, it is found that no experimental method renders surface energies as low as the one presented by Tyson and Miller, although they range from 1.43 to 5.38 J/m 2 [75]. From this it can be concluded that the semiempirical derivation used by Tyson and Miller is unsuitable for obtaining the surface energy of the Si and Ge semiconductors.…”

Low Speed Crack Propagation via Kink Formation and Advance on the Silicon (110) Cleavage Plane

“…The experiments were carried out in an inert argon environment to prevent chemically activated ("stress corrosion") cracking [17]. We evaluated the crack speed from the fracture surface features using the Wallner lines method, calculating the energy release rates G at each point of the specimen by finite element analyses [39]. Our results are shown as black points and error bars in Fig.…”

Real-time direct and diffraction X-ray imaging of irregular silicon wafer breakage

“…5 (left) with black arrows, are separated by black lines. Such contrasts arise from micro cleavage steps (mainly along the {110} and {111} planes from the front to the back faces of the wafer), which are often observed on non-smooth cleavage planes (Kaufman & Forty, 1986) and here are obviously related to the arrests of the crack front (Gleizer & Sherman, 2014). The crack front may be reinitiated if enough energy for the formation of such a misalignment step is accumulated, and the crack tip then jumps to the next arrest.…”