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Related Experiment Video

Updated: Apr 2, 2026

A Micropatterning Assay for Measuring Cell Chirality

A Micropatterning Assay for Measuring Cell Chirality

Published on: March 11, 2022

Exploiting virtual three-dimensional asymmetry for planar intrinsic chirality.

Byeong Je Jeon, Yu Geun Ki, Hyeon Woo Jeon

|April 1, 2026

Summary

Researchers achieved strong intrinsic chirality using a simple planar metasurface, avoiding complex 3D fabrication. This breakthrough enables enhanced optical chirality applications with a novel substrate-induced asymmetry approach.

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Area of Science:

Photonics and Metamaterials
Nanotechnology
Optical Chirality

Background:

Achieving intrinsic chirality at optical wavelengths typically requires complex 3D nanofabrication or loss engineering.
Existing methods present significant challenges in terms of fabrication complexity and material limitations.

Purpose of the Study:

To demonstrate strong intrinsic chirality in a simple, planar metasurface.
To explore substrate-induced virtual 3D asymmetry as a novel strategy for optical chirality.
To optimize metasurface design for enhanced circular dichroism (CD).

Main Methods:

Design and simulation of a single-height planar metasurface.
Exploiting hybridized electric- and magnetic-dipole resonances.
Utilizing substrate-induced virtual 3D asymmetry.
Employing nonlocal mode-guided in-plane perturbation to tune transmission phases.

Main Results:

Achieved strong intrinsic chirality in a planar metasurface.
Simulations predicted a maximum circular dichroism (CD) of 0.97 near 935 nm.
Fabricated devices showed pronounced CD resonances with peaks of 0.57 and 0.62 for frontside and backside illumination, respectively.
Validated the effectiveness of the planar metasurface strategy and substrate-induced asymmetry.

Conclusions:

A simple planar metasurface strategy effectively realizes strong intrinsic chirality.
Substrate-induced virtual 3D asymmetry is a viable approach for optical chirality.
The developed metasurface shows significant potential for applications requiring high circular dichroism.