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The tribological properties of N-isopropylacrylamide (NIPA) gel surfaces were studied using scanning force microscopy (SFM) in air or in a temperature-controlled liquid cell. Topography and friction were probed with smooth, micrometer-sized glass spheres mounted on V-shaped cantilevers. The friction coefficients, μ, were evaluated from the slope of plots of the lateral force versus load. The respective...
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