PATTERN FORMATION OF ELECTROLESS DEPOSITION AND COLLOID AGGREGATION OF GOLD IN HIGH MAGNETIC FIELDS

Abstract

Pattern formation of two kinds of aggregation was investigated in high magnetic field of 8 T (tesla) as an experimental approach to the irreversible aggregation with particle drifts. A drastic change was observed in the growth pattern of the gold metal-forest (electroless deposit of gold around a lead ribbon), including a randomly ramified structure at 0 T and oblique growth with a smooth interface at 8 T. On the other hand, no remarkable effect of the magnetic field was observed in the branching pattern of the gold colloid solution.