Abstract
The running liquid Ga droplets on GaAs surface (001) are presented and analyzed by scanning electron microscope and atomic force microscope. Self-motion of Ga droplet on GaAs surface is confirmed by microscope measurements. The liquid droplets are found to move with an initial critical diameter and constantly increase size during motion. The critical diameter of moving Ga droplets is observed to be 1.9 μm on GaAs (011) surface at preparation temperature 680 °C. A linear relationship is found between droplet diameter and trail length. These experiment results are qualitatively analyzed to understand the phenomenon of self-running Ga droplets on GaAs surface.
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