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Large circular dichroism and optical rotation in titanium doped chiral silver nanorods
Author(s) -
Titus Jitto,
Larsen George,
Zhao Yiping,
Perera A. G. Unil
Publication year - 2016
Publication title -
annalen der physik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.009
H-Index - 68
eISSN - 1521-3889
pISSN - 0003-3804
DOI - 10.1002/andp.201600103
Subject(s) - materials science , nanorod , circular dichroism , optical rotation , plasmon , circular polarization , polarization (electrochemistry) , doping , ellipsometry , dichroism , optoelectronics , optics , spectroscopy , nanostructure , nanotechnology , thin film , crystallography , physics , chemistry , quantum mechanics , microstrip
The circular dichroism of titanium‐doped silver chiral nanorod arrays grown using the glancing angle deposition (GLAD) method is investigated in the visible and near infrared ranges using transmission ellipsometry and spectroscopy. These films are found to have significant circular polarization effects across broad ranges of the visible to NIR spectrum, including large values for optical rotation. The characteristics of these circular polarization effects are strongly influenced by the morphology of the deposited arrays. Thus, the morphological control of the optical activity in these nanostructures demonstrates significant optimization capability of the GLAD technique for fabricating chiral plasmonic materials.