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Visualization of Small Water Droplets on Surfaces with Different Degree of Wettability by Using Cryo-Scanning Electron Microscopy

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Abstract:

Cryo-scanning electron microscopy (Cryo-SEM) was applied to visualize mm- and μm-sized water droplets on surfaces differing in their wettability. The shape of droplets varied depending on the surface energy of surfaces studied. On superhydrophobic surfaces, mostly complete drops could be observed. In the Cryo-SEM samples on hydrophilic surfaces, where ice was sublimated, the shape and original size of droplets and water films was recognised due to network- or foam-like residues present in water. The snapshots of dynamical processes, such as condensation or coalescence, were visualized at a high resolution.

Keywords: COALESCENCE; CONDENSATION; CRYO-SCANNING ELECTRON MICROSCOPY; CRYO-SEM; SURFACE; WATER DROPLETS; WETTABILITY

Document Type: Short Communication

DOI: https://doi.org/10.1166/jamr.2012.1091

Publication date: 2012-03-01

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  • Journal of Advanced Microscopy Research (JAMR) provides a forum for rapid dissemination of important developments in high-resolution microscopy techniques to image, characterize and analyze man-made and natural samples; to study physicochemical phenomena such as abrasion, adhesion, corrosion and friction; to perform micro and nanofabrication, lithography, patterning, micro and nanomanipulation; theory and modeling, as well as their applications in all areas of science, engineering, and medicine.
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