E-viri
Recenzirano
-
Schwarz, K W; Tersoff, J
Physical review letters, 05/2009, Letnik: 102, Številka: 20Journal Article
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 Si wires.
