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Scanning electron micrographs of PEGDMA(Mn=875) gel microstructures on SU-8 surface.
(a) Wheel-like PEG microstructure consists of 50 μm wide rod (at outer side)
(b) SEM image of wheel-like PEG microstructure (tilt angle=60°)
(c) SEM image of photopatterned grafted layer on SU-8 surface (tilt angle=30°)
