Liquid Spreading under Nanoscale Confinement.

摘要: Dynamic atomic force microscopy in the noncontact regime is used to study morphology of a nonvolatile liquid (squalane) as it spreads along wettable nanostripes embedded nonwettable surface. Results show that profile depends on amount lateral confinement imposed by nanostripes, and truncated at microscopic contact line good qualitative agreement with classical mesoscale hydrodynamics. However, width found be significantly larger than expected theoretically. This behavior may originate from small chemical inhomogeneity patterned stripes well thermal fluctuations line.