Multicolor patterning using holographic woodpile photonic crystals at visible wavelengthsElectronic supplementary information (ESI) available: Cross-sectional SEM images of 3D woodpile structures with different laser exposure times. See DOI: 10.1039/c3nr00644a

High-quality woodpile structures with photonic band gaps in the visible wavelength range were fabricated using a single prism holographic lithography technique. Woodpile structures were prepared to have a rod diameter of 160 nm, a lateral periodicity of 240 nm, and an axial periodicity of 300 nm, wh...

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Main Authors: Park, Sung-Gyu, Yang, Seung-Man
Format: Article
Language:English
Online Access:Get full text
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Summary:High-quality woodpile structures with photonic band gaps in the visible wavelength range were fabricated using a single prism holographic lithography technique. Woodpile structures were prepared to have a rod diameter of 160 nm, a lateral periodicity of 240 nm, and an axial periodicity of 300 nm, which is the smallest feature size for three-dimensional nanopatterned structures. A multicolor patterning method was used to vary the degree of crosslinking in the negative photoresist. These woodpile structures showed enhanced fluorescence due to a large surface area and the presence of bicontinuous interconnected pores. This paper presents a multicolor patterning method by varying the degree of crosslinking in the negative photoresist.
ISSN:2040-3364
2040-3372
DOI:10.1039/c3nr00644a