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Cryo-SEM micrographs of a commercial surfactant-stabilized water-in-silicone oil emulsion: (a) Secondary electron micrograph; the arrow points to water globules, and arrowheads point to craters left by droplets plucked during specimen fracture. (b) The same area as in panel a, imaged by backscattered electrons. The lighter area represents the silicone oil, and the darker area represents the water. AV = 1 kV, WD = 3.8 mm, and scale bar = 1 mm.
