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Related Concept Videos

Chirality02:25

Chirality

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Chirality is a term that describes the lack of mirror symmetry in an object. In other words, chiral objects cannot be superposed on their mirror images. For example, our feet are chiral, as the mirror image of the left foot, the right foot, cannot be superposed on the left foot.
Chiral objects exhibit a sense of handedness when they interact with another chiral object. For example, our left foot can only fit in the left shoe and not in the right shoe. Achiral objects — objects that have...
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Chirality in Nature02:30

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Chirality is the most intriguing yet essential facet of nature, governing life’s biochemical processes and precision. It can be observed from a snail shell pattern in a macroscopic world to an amino acid, the minutest building block of life. Most of the snails around the world have right-coiled shells because of the intrinsic chirality in their genes. All the amino acids present in the human body exist in an enantiomerically pure state, except for glycine - the sole achiral amino acid.
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An Active Metamaterial Platform for Chiral Responsive Optoelectronics.

Lei Kang1,2, Shoufeng Lan3, Yonghao Cui1

  • 1School of Materials Science and Engineering, Georgia Institute of Technology, Atlanta, GA, 30332, USA.

Advanced Materials (Deerfield Beach, Fla.)
|June 23, 2015
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Summary
This summary is machine-generated.

This study demonstrates chiral-selective non-linear optics in an electrically active photonic metamaterial. This material enables the conversion of optical signals into electrical signals for integrated photonics applications.

Keywords:
chiralitymetamaterialsnanophotonicsnonlinear opticsoptoelectronics

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Area of Science:

  • Photonics and Materials Science
  • Non-linear Optics
  • Metamaterials

Background:

  • Chiral-selective optical responses are crucial for advanced photonic devices.
  • Electrically active photonic metamaterials offer tunable optical properties.
  • Transduction of optical phenomena into electrical signals is key for integrated photonics.

Purpose of the Study:

  • To demonstrate chiral-selective non-linear optical effects in an electrically active photonic metamaterial.
  • To investigate the chiroptical responses, including harmonic generation and the photon drag effect.
  • To explore the potential for integrated photonics applications.

Main Methods:

  • Fabrication of an electrically active photonic metamaterial.
  • Characterization of linear and non-linear optical responses.
  • Correlation of chiroptical responses with resonance behavior.

Main Results:

  • Significant chiral-selective non-linear optical responses observed.
  • Demonstration of harmonic generation and photon drag effect with chiroptical selectivity.
  • Correlation between non-linear chiroptical effects and linear resonance behavior.

Conclusions:

  • Electrically active photonic metamaterials exhibit significant chiral-selective non-linear optical properties.
  • The demonstrated metamaterial enables efficient transduction of chiroptical responses to electrical signals.
  • This work paves the way for multifunctional devices in integrated photonics.