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The Effect of Lattice Strain on Step Edge Diffusion
Hong, Ki-Ha,Ch, Pil-Ryunga,Nam, Ho-Seok,Yoon, Jong-Kyu 대한금속재료학회 2003 METALS AND MATERIALS International Vol.9 No.2
The effects of lattice strain on the step edge diffusion of Ag(111) and Ag(100) surfaces are analyzed using molecular statics (MS) based on the semi-empirical embedded atom method (EAM) potential. The calculation of activation barriers of adatom diffusion on surfaces, diffusion over step edge, island corner diffusion, and diffusion along step under strained conditions shows that lattice strain greatly affects the energy barriers of various diffusion processes. For example, comparison shows that the Ehrlich-Schwoebel (ES) barrier decreases as lattice strain increases, which is opposite with strain dependency of surface diffusion barrier, and the diffusions along two different types of steps on Ag(111) surface have a lattice strain dependency different from each other. These different diffusion barrier behavior dependencies on lattice strain have interesting implications on the morphological evolution of strained thin film.
양춘우,Jin Sung Bae,Tae In Park,Jong Cheol Lee,Jeong Eun Sohn,Ryunga Kang,Kye Ho Lee 대한마취통증의학회 2013 Korean Journal of Anesthesiology Vol.65 No.6
Phrenic nerve paralysis is an unusual complication associated with central venous catheterization. Various mechanisms have been proposed. We present a case of transient right hemidiaphragmatic paralysis after subclavian venous catheterization. We hypothesize that anatomical variation of the phrenic nerve was responsible for this complication.