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Soft and broadband infrared metamaterial absorber based on gold nanorod/liquid crystal hybrid with tunable total absorption.

Abstract：

:We design a soft infrared metamaterial absorber based on gold nanorods dispersed in liquid crystal (LC) placed on a gold film and theoretically investigate its total absorption character. Because the nanorods align with the LC molecule, the gold nanorods/LC hybrid exhibits different permittivity as a function of tilt angle of LC. At a certain tilt angle, the absorber shows an omnidirectional total absorption effect. By changing the tilt angle of LC by an external electric field, the total absorption character can be adjusted. The total absorption character also depends on the concentration, geometric dimension of nanorods, and defect of nanorod arrangement in LC. When the LC contains different size of gold nanorods, a broadband absorption can be easily realized. The characteristics including flexibility, omnidirectional, broadband and tunability make the infrared metamaterial absorber possess potential use in smart metamaterial devices.

journal_name

Sci Rep

journal_title

Scientific reports

authors

Su Z,Yin J,Zhao X

doi

10.1038/srep16698

subject

Has Abstract

pub_date

2015-11-18 00:00:00

pages

16698

issn

2045-2322

pii

srep16698

journal_volume

5

pub_type

杂志文章

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