Research / 2019 / Article / Fig 1

Research Article

Light-Written Reversible 3D Fluorescence and Topography Dual-Pattern with Memory and Self-Healing Abilities

Figure 1

Optical microscope images of the patterns direct-written using a series of positive concentric circular annulus photomasks with different sizes: (a) 30 μm; (b) 60 μm; (c) 100 μm; (d) 200 μm; (e) 300 μm; (f) 500 μm. The thickness of polymer blend film is fixed at approximately 200 μm. The intensity and exposure time of 365 nm UV light are approximately 50 mW/cm2 and 30 seconds, respectively.

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