On the long-range attractive force between plate-like gold particles

摘要: Abstract A formation of fibrous aggregates plate-like gold particles dispersed in an aqueous solution was observed under optical microscope. The suspension particles, which were about 2 μm diameter and 100–200 thickness, prepared by reducing a dilute chloroauric acid with salicylic acid. When the concentration NaCl medium came within 7 × 10 −4 to −3 moles/liter large number aggregated face formed long aggregates. These individual fibers then lined up parallel one other form larger Brownian motion perceptible but these did not separate from This aggregation reversible, since redispersed reduction ionic or mechanical turbulence. can be explained secondary minimum interaction potential curve theory Derjaguin Landau Verwey Overbeek.