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. 2017 May 12;7(5):055307. doi: 10.1063/1.4983575

FIG. 3.

FIG. 3.

Optical-microscopic images of the substrates with the space between the rods filled by wax solid with different duration of inclined placement when the wax was still liquid. (a) 30min; (b) 1 hour; (c) 5 days; (d) 20 days.