期刊
PHYSICAL REVIEW LETTERS
卷 102, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevLett.102.206101
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Starting with a liquid eutectic droplet on a surface, we calculate its dynamical evolution into an epitaxial nanowire via the vapor-liquid-solid growth process. Our continuum approach incorporates kinetic effects and crystalline anisotropy in a natural way. Some realistic features appear automatically even for an isotropic solid, e.g., the tapered wire base. Crystal anisotropy leads to a richer variety of morphologies. For example, sixfold anisotropy leads to a wire shape having broken symmetry and an intriguing resemblance to the < 110 >-oriented Si wires seen in Au-catalyzed growth on Si (111), while higher symmetry leads to a shape more like < 111 > Si wires.
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