  Sub-critical nanopores are known to inhibit continuous evaporation within
heat pipes, posing a challenge in understanding the limitations of nanopore
size on wicking action. This study addresses this by systematically
investigating the wicking capabilities in nanoscale heat pipes using
coarse-grained molecular dynamics simulations. The results reveal that
temperature-induced flow in these heat pipes is primarily driven by surface
interactions rather than traditional wicking action. Additionally, the water
fill ratio and thermal gradient significantly influence the performance of
these systems. These insights can substantially benefit heat transfer research,
providing a foundation for improving thermal performance through nanoscale
design innovations.
