Molecular Dynamics Study on Young's Modulus of Silicon Nanofilms Under Surface Reconstruction at Finite Temperature
In this paper, we investigate Si (001) nanofilms (1nm and 2nm thickness) Young's modulus under (2×1) surface reconstruction along [110] and [1-10] directions at different temperature from 100K to 800K by Molecular dynamics (MD) is investigated. The (2×1) surface reconstruction leads to formation of dimmers, making Young's moduli along the [110] direction stiffer than the [1-10] direc-tion. Young's moduli decrease as temperature increases. Thermal expansion cause temperature effect .Surface reconstruction and temperature effect are more significant as size is scaled down to nanoscale.
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NSTL
万方数据
维普
