1. Enhanced reflection from inverse tapered nanocone arrays.
- Author
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Xiang-Tian Kong, Butt, Haider, Yetisen, Ali K., Kangwanwatana, Chuan, Yunuen Montelongo, Sunan Deng, da Cruz Vasconcellos, Fernando, Qasim, Malik M., Wilkinson, Timothy D., and Qing Dai
- Subjects
OPTICAL reflection ,SILICON surfaces ,OPTICAL devices ,FINITE element method ,ELECTRON beam lithography ,OPTICAL polarization ,ENERGY conservation - Abstract
We computationally and experimentally demonstrate enhanced reflection effects displayed by silicon-based inverted nanocone arrays. A 3D finite element model is used to characterize the optical properties of the nanocone arrays with respect to the change in polarization and incident angles. The nanocone arrays are fabricated by e-beam lithography in hexagonal and triangular geometries with a lattice constant of 300 nm. The fabricated devices show a two-fold increase in reflection compared with bare silicon surface, as well as a strong diffraction within the visible and nearinfrared spectra. The nanocone arrays may find a variety of applications from optical devices to energy conservation technologies. [ABSTRACT FROM AUTHOR]
- Published
- 2014
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