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Chiroptically Active Metallic Nanohelices with Helical Anisotropy
Author(s) -
Huang Zhifeng,
Liu Junjun
Publication year - 2017
Publication title -
small
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 3.785
H-Index - 236
eISSN - 1613-6829
pISSN - 1613-6810
DOI - 10.1002/smll.201701883
Subject(s) - chirality (physics) , materials science , metamaterial , anisotropy , circular polarization , polarization (electrochemistry) , metal , surface plasmon resonance , helicity , nanotechnology , optoelectronics , optics , chemistry , physics , symmetry breaking , nanoparticle , chiral symmetry breaking , quantum mechanics , particle physics , nambu–jona lasinio model , metallurgy , microstrip
Manipulation of circular polarization states of light in the ultraviolet‐visible‐near infrared range, which cannot be operated using natural materials, is of fundamental interest derived from a wide range of chirality‐associated optical, chemical and biological applications. To achieve this objective, chiral metamaterials made of metallic nanohelices (NHs) have been artificially designed and generated. The circular polarization manipulation is as a result of helical anisotropy and localized surface plasmon resonance of metallic NHs, and engineering helical structures and metallic composition gives rise to flexible tailoring of the circular polarization manipulation. Herein, we review the latest development of metallic NHs in terms of fabrication, fundamentally optical and magnetic properties, and chiroptical applications, followed by envisioning prospective applications closely related to molecular chirality. We strongly believe that the helicity‐induced anisotropy of metallic NHs will provide us a wide range of opportunities to tackle some prominent problems and challenges intrinsically associated with the natural homochirality.