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Strong Rotational Anisotropies Affect Nonlinear Chiral Metamaterials
David C Hooper1, Andrew G Mark2, Christian Kuppe1
1Centre for Photonics and Photonic Materials, Centre for Nanoscience and Nanotechnology, University of Bath, Bath, BA2 4JY, UK.
Advanced Materials (Deerfield Beach, Fla.)
|February 1, 2017
Summary
Chiral information in metamaterials is hidden by rotational effects. Rotating the sample reveals this chiral response, showing a need for new methods to analyze complex chiral nanomaterials.
Area of Science:
- Optics and Photonics
- Materials Science
- Chemistry
Background:
- Nonlinear chiroptical response is crucial for understanding chiral metamaterials.
- Rotational anisotropies can obscure the intrinsic chiral signals.
- Developing methods to isolate chiral contributions is essential for complex nanomaterials.
Purpose of the Study:
- To address the challenge of inaccessible nonlinear chiroptical response in metamaterials.
- To demonstrate how sample rotation can reveal hidden chiral information.
- To emphasize the need for general methods to extract true chiral signals.
Main Methods:
- Investigating nonlinear chiroptical properties of metamaterials.
- Utilizing sample rotation to manipulate and observe optical signals.
- Analyzing the emergence of chiral information under varying orientations.
Main Results:
- Nonlinear chiroptical response is initially masked by rotational effects.
- Chiral information becomes accessible upon rotating the metamaterial sample.
- The study highlights the limitations of current methods for complex chiral systems.
Conclusions:
- Sample rotation is a viable strategy to unveil hidden chiral responses.
- A general method for extracting chiral contributions is needed for advanced chiral meta/nanomaterials.
- Accurate characterization of nonlinear chiroptical effects is vital for future applications.
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