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Fractal (scaling)clusters in thin gold films near the percolation threshold

Tipo de material: TextoTextoSeries ; Physical Review Letters, 49(19), p.1441, 1982Trabajos contenidos:
  • Voss, R. F
  • Laibowitz, R. B
  • Allessandrini, E. I
Recursos en línea: Resumen: Transmission electron micrographs of thin evaporated gold films were analyzed by computer. For length scales above 10 nm, the irregular connected clusters show a perimeter linearly proportional to area. Near the percolation threshold the large-scale power-law correlations and area distributions are consistent with the scaling theory of second-order phase transitions. Geometrically, the boundary of all clusters is a fractal of dimension D=2 while individual boundaries are of fractal dimension DC?1.9.
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Transmission electron micrographs of thin evaporated gold films were analyzed by computer. For length scales above 10 nm, the irregular connected clusters show a perimeter linearly proportional to area. Near the percolation threshold the large-scale power-law correlations and area distributions are consistent with the scaling theory of second-order phase transitions. Geometrically, the boundary of all clusters is a fractal of dimension D=2 while individual boundaries are of fractal dimension DC?1.9.

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