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We present an experimental and theoretical analysis of the optical properties of gold nanorings of different sizes and cross-sections. We show that for light polarized parallel to the ring, the optical spectrum can depend sensitively on the angle of incidence. For normal incidence, the spectrum is characterized by two dipolar ring resonances. As the angle of incidence becomes more oblique, several...
The phase transformations of NaSbO 3 and NaBiO 3 from ilmenite phase to the orthorhombic phase are predicted within the density functional theory (DFT) using the generalized gradient approximation. The bonding properties of the covalent band maximum and the conduction band bottom are used to elucidate the comparatively large band gap in the ilmenite phase to the orthorhombic phase...
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