| A closer look at the rise of liquid-air interfaces, also called menisci, in nanometer scale capillaries shows that modifications of the macroscopic laws like Lucas-Washburn equation are needed. Experiments on the spontaneous imbibition in nano-porous vycor glass recently showed a broadening of the imbibition front. This phenomenon encouraged us to investigate the capillary rise of a simple Lennard Jones fluid in nano-pores, nano-pore-junctions and nano-pore-intersections using molecular dynamics simulations. Our main interest is the quantitative characterisation of the influence of the wall / fluid particle interaction strength. We present results for the fluid propagation, the interface morphology and fluid density profiles. |
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