Chiroptically Active Metallic Nanohelices with Helical Anisotropy

Jeffery HUANG*, Junjun Liu

*Corresponding author for this work

Research output: Contribution to journalReview articlepeer-review

15 Citations (Scopus)

Abstract

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.

Original languageEnglish
Article number1701883
JournalSmall
Volume13
Issue number43
DOIs
Publication statusPublished - 20 Nov 2017

Scopus Subject Areas

  • Biotechnology
  • Biomaterials
  • Chemistry(all)
  • Materials Science(all)

User-Defined Keywords

  • chiral nanoplasmonics
  • chiroptical activity
  • circular dichroism
  • helical anisotropy
  • metallic nanohelices

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