Open AccessExperimental realization of hyperbolic dispersion metamaterial for the whole visible spectrum based on liquid crystalline phase soft template
Author(s) -
Xiangjun Xiang,
Chengliang Yang,
Ying Zhang,
Zenghui Peng,
Zhaoliang Cao,
Haifeng Zhao,
Peiguang Zhang,
Xuan Li
Publication year - 2015
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.23.021343
Subject(s) - optics , materials science , wavelength , metamaterial , polarization (electrochemistry) , dispersion (optics) , refractive index , nanowire , negative refraction , refraction , dielectric , phase (matter) , dispersion relation , optoelectronics , physics , chemistry , quantum mechanics
We experimentally demonstrated a metamaterial composed of hexagonal arrays of silver nanowires that exhibits hyperbolic dispersion and negative refraction in the entire visual wavelength range. The nanowires with extremely small size of 10 nm diameter and 15 nm center-to-center distance were fabricated using the reverse hexagonal liquid crystalline phase template containing AgNO(3) solution. Through the experiments of angle dependent reflectance for s-polarization and p-polarization, the dielectric constants were measured in several wavelengths. Calculations and experiments both show hyperbolic dispersion relations from 370 nm to 750 nm which indicates the presence of all-angle negative refraction. For all the experimental wavelengths, the permittivities of the material are in good agreement with the theoretical calculations.