diener electronic : Surface energy


	Surface energy Surface energy, also designated surface tension, is a valuecharacterizing the interaction of a condensed phase’s (solid or liquid)surface with its environment, given in mN/m. Surface energy is acriterion for the coatability of a material and can be increased bydifferent plasma processes (e. g. plasma cleaning, plasma etching,etc.).The surface energies of solids range from below 20 mN/m (e. g.PTFE) up to several thousand mN/m (metals, diamond).The surface energy ofa solid can be estimated by means of test inks, a precise determinationof disperse and polar portion is feasible by wetting angle determinationof different liquids on the respective surface.

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