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Optically smooth microlens array fabricated by oscillation-assisted 3D printing.
Optically smooth microlens array is fabricated by an oscillation-assisted 3D printing method. Owing to the mechanical oscillation applied on the projection lens, jagged surface induced by the gaps between discrete pixels is successfully eliminated to render a low surface roughness of 1 nm, which endows the printed microlenses with high resolving power. Image: Singapore University of Technology and Design / ACS Applied Materials & Interfaces.
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