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Chiroptically Active Metallic Nanohelices with Helical Anisotropy
Zhifeng Huang1,2,3, Junjun Liu1
1Department of Physics, Hong Kong Baptist University (HKBU), Kowloon Tong, Kowloon, Hong Kong SAR, China.
Small (Weinheim an Der Bergstrasse, Germany)
|September 30, 2017
Summary
Metallic nanohelices (NHs) offer novel ways to control light polarization, crucial for chirality-based applications. These engineered metamaterials provide unique optical properties for advanced scientific and biological uses.
Area of Science:
- Optics and Photonics
- Materials Science
- Nanotechnology
Background:
- Natural materials cannot manipulate circular polarization of light in the UV-Vis-NIR range.
- Chirality-associated optical, chemical, and biological applications require advanced polarization control.
Purpose of the Study:
- To review the development of metallic nanohelices (NHs) for manipulating circular polarization states of light.
- To explore fabrication, properties, and applications of metallic NHs.
- To envision future applications related to molecular chirality.
Main Methods:
- Artificial design and generation of chiral metamaterials using metallic nanohelices.
- Engineering helical structures and metallic composition for tailored optical responses.
- Review of fabrication techniques, optical/magnetic properties, and chiroptical applications.
Main Results:
- Metallic NHs exhibit helical anisotropy and localized surface plasmon resonance, enabling circular polarization manipulation.
- Flexible tailoring of polarization control is achievable by engineering NH structure and composition.
- Metallic NHs show promise for addressing challenges in natural homochirality.
Conclusions:
- Metallic NHs are effective artificial materials for manipulating circular polarization.
- Helicity-induced anisotropy of metallic NHs opens opportunities for tackling problems related to molecular chirality.
- This technology has significant potential in optical, chemical, and biological fields.
Keywords:
chiral nanoplasmonicschiroptical activitycircular dichroismhelical anisotropymetallic nanohelicesMore Related Videos
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