The authors report the fabrication of freestanding two-dimensional photonic crystals in organic materials. Large-area patterned structures, with submicrometric spatial resolution, have been recorded in spin-coated polymer-dispersed liquid crystals via holographic photolithography. After the removal of the liquid crystal, the polymeric film is peeled off from the substrate. Scanning electron microscope images show the high homogeneity of the structure in any spatial direction. These films can be conveniently used in a wide range of applications, from templates for high-refractive index photonic crystals to flexible photonic elements.
Large-area photonic structures in free-standing films / Vita, Francesco; Lucchetta, Daniele Eugenio; Castagna, R; Criante, L; Simoni, Francesco. - In: APPLIED PHYSICS LETTERS. - ISSN 0003-6951. - 91:(2007), pp. 103114-1-103114-3. [10.1063/1.2771077]
Large-area photonic structures in free-standing films
VITA, Francesco;LUCCHETTA, Daniele Eugenio;SIMONI, Francesco
2007-01-01
Abstract
The authors report the fabrication of freestanding two-dimensional photonic crystals in organic materials. Large-area patterned structures, with submicrometric spatial resolution, have been recorded in spin-coated polymer-dispersed liquid crystals via holographic photolithography. After the removal of the liquid crystal, the polymeric film is peeled off from the substrate. Scanning electron microscope images show the high homogeneity of the structure in any spatial direction. These films can be conveniently used in a wide range of applications, from templates for high-refractive index photonic crystals to flexible photonic elements.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
