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Over the last decade, direct laser writing via two‐photon absorption turned from a laboratory curiosity into a versatile technique for the fabrication of 3D nano‐and microstructures. Especially, in the field of nanophotonics novel structures could be fabricated and tested for agreement with theory. G. von Freymann and co‐workers review recent progress in the field on page 1038. The cover image displays...
Recent progress in direct laser writing of three‐dimensional (3D) polymer nanostructures for photonics is reviewed. This technology has reached a level of maturity at which it can be considered as the 3D analogue of planar electron‐beam lithography. Combined with atomic‐layer deposition and/or chemical‐vapor deposition of dielectrics—the 3D analogues of planar evaporation technologies, the 3D polymer...
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