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Double cone nanostructures are proposed for the ultimate anti-reflectivity of encapsulated silicon solar cells. The proposed design consists of high aspect ratio silicon nanocones covered by a polymeric layer textured with inverted nanocone structures. Both nanocones and inverted nanocones effectively suppress Fresnel reflection at each interface by means of gradient index effect, while the inverted...
We propose and experimentally demonstrate a novel method to fabricate subwavelength silica nanocone arrays with high aspect ratio (∼7) for multifunctional surfaces having anti-reflective, self-cleaning, and anti-fogging properties.
Tapered nanostructures with high aspect ratio were fabricated using high-throughput nanoimprint process. The replicated nanostructures have axially increasing effective refractive index, which enhances the optical transmission over a wide range of wavelengths and incident angles.
We have experimentally demonstrated suppression of reflection diffracted orders by at least 100× in a silicon grating by tapered nanostructures emulating adiabatic index matching. Novel fabrication using self-assembled nanospheres as lithographic mask was employed.
The growth behavior and atomic structure of the Ag wetting layer grown on the W(110) surface, was studied with scanning tunneling microscopy. Deposited Ag atoms preferentially adsorb at the step edges and reveal a step-flow growth behavior at room temperature. In the Ag wetting layer, a periodic bright ridge structure was observed along the [3¯37] and [3¯37¯] directions. The atomic registry of the...
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