Figure 4.

(a) Schematic of double exposure PMIL and a scanning electron microscope (SEM) image of a fabricated woodpile structure. Reproduced with permission.²⁷ Copyright 2010, American Vacuum Society. (b) Schematic of dip-in 3D-DW and SEM images of patterned 200 μm tall negative Poisson ratio structure. Reproduced with permission.³⁷ (c) Schematic of a combinatory approach (IL + FLaSk DW). SEM (top) and optical (bottom) images of a fabricated hierarchical photonic structure containing 3D-DW designer waveguide defects. Reproduced with permission.²⁵ Copyright 2011, The Royal Society of Chemistry.