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In this micrograph, the spherical Ag droplet (about 5 microns in diameter) is almost detached from the SiO2 base, yet it is in the clothing of a thin SiO2 layer.
Credit: Prof. Dr. Z. X. Cao
Source: Physics is Fun, Physics is Art; Prof. Dr. Ming-Wei Wu, Hefei National Laboratory for Physical Sciences at Microscale, University of Science and Technology of China.
