Droplets and bubbles of nanometer scales are more endurable , surviving days or even weeks compared to larger ones. The H-O bond of the skin and bulk contracts while the dangling one expands when heated. Skin H-O bonds of water and ice share the same of 3450 cm -1 frequency, which are less sensitive to heating than the bulk one featured at 3200 cm -1 . Furthermore, the supersolid skin has a lower specific heat and high thermal diffusivity, which endows heat outward flow of the liquid in thermal transport of warmer water, called the Mpemba paradox .