An experimental investigation on fluidic behaviors in a two-dimensional nanoenvironment

Behaviors of liquids in two-dimensional (2D), lyophobic nanoenvironment were investigated experimentally by using a surface-modified, graphene-based nanoslit composite (GBNC). Different from previous reports on one-dimensional (1D) nanofludic behaviors, the infiltration pressure of 2D nanofluid is not dependent on the infiltration volume, leading to a flat infiltration plateau in the sorption isotherm curve. This unique phenomenon implies that, compared with a 1D nanoenvironment, more energetically favorable molecular configurations may be formed in a 2D nanoslit, probably due to the relaxation of the lateral confinement.