Precise fabrication of point defects in self-assembled three-dimensional macroporous photonic crystals.
We demonstrate a new and simple method of precisely fabricating defects in three-dimensional (3D) CdS macroporous photonic crystals (PCs) with a variable pressure scanning electron microscope. Well-defined point defects, not only vacancies but also an impurity (a reduced-size sphere), were directly fabricated by electron-beam irradiation under a gas atmosphere. This provides a convenient and straightforward method of introducing various designed defects into 3D PCs for photonic-band-gap-based applications.
Xie
Rongguo
R
Nanomaterials Laboratory, National Institute for Materials Science, Tsukuba 305-0047, Japan.
Sekiguchi
Takashi
T
Li
Dongsheng
D
Yang
Deren
D
Jiang
Minhua
M
D019187:Cadmium Compounds / Q000737:chemistry*; D003460:Crystallization; D004583:Electrons; D008855:Microscopy, Electron, Scanning / Q000379:methods; D049329:Nanostructures / Q000737:chemistry*; D010316:Particle Size; D017785:Photons; D016062:Porosity; D012680:Sensitivity and Specificity; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties
D019187:Cadmium Compounds; D013440:Sulfides; C034939:cadmium sulfide