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Related Concept Videos

Chirality02:25

Chirality

22.6K
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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Phase Contrast and Differential Interference Contrast Microscopy01:26

Phase Contrast and Differential Interference Contrast Microscopy

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Phase-Contrast Microscopes
In-phase-contrast microscopes, interference between light directly passing through a cell and light refracted by cellular components is used to create high-contrast, high-resolution images without staining. It is the oldest and simplest type of microscope that creates an image by altering the wavelengths of light rays passing through the specimen. Altered wavelength paths are created using an annular stop in the condenser. The annular stop produces a hollow cone of...
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Chirality in Nature02:30

Chirality in Nature

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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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Related Experiment Video

Updated: May 16, 2025

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
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LC device for generating chiral phase and chiral intensity switching.

Wei Sun, Yaqin Zhou, Shuyang Huang

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    Summary

    This study introduces a novel liquid crystal device (LCD) for advanced light field modulation. The device enables facile control over light chirality switching for diverse scientific applications.

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    Area of Science:

    • Optics and Photonics
    • Materials Science

    Background:

    • Chirality in light fields is crucial for applications like nanofabrication and optical tweezers.
    • Multi-parameter modulation and chiral switching of light fields present significant challenges.

    Purpose of the Study:

    • To develop a multifunctional liquid crystal device (LCD) for advanced light field modulation and chiral switching.
    • To design a novel optical phase plate capable of distinct chiral state modulation.

    Main Methods:

    • Fabrication of a multifunctional liquid crystal device (LCD) using photoalignment technology.
    • Design of an optical phase plate combining radial vortices for light field modulation.
    • Utilizing tight focusing and radial axial transformation for chirality switching.

    Main Results:

    • Demonstrated intensity chirality switching through tight focusing.
    • Achieved phase chirality switching via radial axial transformation.
    • The developed LCD offers electronically controlled, large-size, broad-spectral, and low-cost chiral light generation.

    Conclusions:

    • The multifunctional LCD provides facile and versatile manipulation of chiral light structures.
    • The generated chiral-switching light holds significant potential for material chirality detection and super-resolution microscopy.