Figure 2
From: High-aspect 3D two-photon polymerization structuring with widened objective working range (WOW-2PP)
(a) SEM image of 6×6 grid structure. (b) SEM image of “Tokyo Skytree”. Both structured are fabricated by WOW-2PP with 100× high-magnification microscope objective. 2PP, two-photon polymerization; SEM, scanning electron microscope.
