Fig. 2

SEM images showing various 3D microstructures fabricated via TPP. a 3D cell culture scaffolds for cell culture application. SEM image of 3D cell culture scaffold based on laser powers of 30, 40, 50, and 60 mW for the same structural design. At 30 and 40 mW, some of the structures were detached via delamination. b SEM image of one of cell culture structures. c Cell scaffold usable for cell culture applications. The pillars on the outer shell and the pillars that cross the inside of the scaffold are designed to mimic blood vessels. d SEM image of a microlens array, where some microlenses detached via delamination