Figure 2.

Preparation of liquid-infused surface: (a–d) nanochannel-depleted lubricant-infused surface preparation stages: a pristine sample followed by flooding with silicone oil, gravimetric depletion and shear depletion under tap water at 0.4 ms^–1, (e) snapshot of silicone oil (50 cSt) spreading on the porous nanochannel wicks sample, (f) wetting ridges around fluorescence dissolved-water drop on (nanochannel) nc-LIS 50 cSt, and (g–h) advancing and receding contact angles on nc-LIS 5 cSt, respectively.