Figure 2
From: Microscale Liquid Transport in Polycrystalline Inverse Opals across Grain Boundaries
Representative scanning electronic microscope images of crystalline copper inverse opals. The periodicity of the crystalline pores with pore diameters of 300, 600, and 1000 nm is shown from the (a–c) top and (d,e) cross-sectional view. The schematic inset in (a) illustrates the via within each pore as the interconnected window between adjacent pores, allowing fluid to permeate throughout the porous matrix. All scale bars are 2 µm.
