Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Fischer Projections

Fischer Projections

Learning to draw Fischer projections of molecules and understanding their relevance plays a crucial role in the visual depiction of organic molecules. A Fischer projection is a two-dimensional projection on a planar surface to simplify the three-dimensional wedge–dash representation of molecules. This is especially helpful in the case of molecules with multiple chiral centers that can be difficult to draw. Here, all the bonds of interest are represented as horizontal or vertical lines.

Chirality

Chirality

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...

Molecules with Multiple Chiral Centers

Molecules with Multiple Chiral Centers

Molecules that possess multiple chiral centers can afford a large number of stereoisomers. For instance, while some molecules like 2-butanol have one chiral center, defined as a tetrahedral carbon atom with four different substituents attached, several molecules like butane-2,3-diol have multiple chiral centers. A simple formula to predict the number of stereoisomers possible for a molecule with n chiral centers is 2n. However, there can be a lower number where some of the stereoisomers are...

Radicals: Electronic Structure and Geometry

Radicals: Electronic Structure and Geometry

This lesson delves into the geometry of a radical, which is influenced by the electronic structure of the molecule. The principle is similar to that of a lone pair, where the unpaired electron influences the geometry at the radical center.
Accordingly, the structure of a trivalent radical lies between the geometries of carbocations and carbanions. An sp2-hybridized carbocation is trigonal planar, while an sp3-hybridized carbanion is trigonal pyramidal. Here, the difference in geometry is...

Chirality at Nitrogen, Phosphorus, and Sulfur

Chirality at Nitrogen, Phosphorus, and Sulfur

Chirality is most prevalent in carbon-based tetrahedral compounds, but this important facet of molecular symmetry extends to sp3-hybridized nitrogen, phosphorus and sulfur centers, including trivalent molecules with lone pairs. Here, the lone pair behaves as a functional group in addition to the other three substituents to form an analogous tetrahedral center that can be chiral.
A consequence of chirality is the need for enantiomeric resolution. While this is theoretically possible for all...

Stereoisomerism of Cyclic Compounds

Stereoisomerism of Cyclic Compounds

In this lesson, we delve into the role of ring conformation and its stability, which determines the spatial arrangement and, consequently, the molecular symmetry and stereoisomerism of cyclic compounds. 1,2-Dimethylcyclohexane is used as a case study to evaluate the possible number of stereoisomers. Here, given the multiple (n = 2) chiral centers, there are 2n = 4 possible configurations that lack a plane of symmetry, as the ring skeleton exists in a non-planar chair conformation. In addition,...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

Integration of 2D Materials in Radial van der Waals Heterostructure Metasurfaces.

ACS nano·2026

Same author

High-throughput in situ sizing and quantum yield determination of individual perovskite nanocrystals.

Nature materials·2026

Same author

Phonon-polaritonic skyrmions: transition from bubble- to Néel-type.

Light, science & applications·2026

Same author

Tunable polaritonic topologies generated by non-local photonic modes.

Nature nanotechnology·2026

Same author

Boosting the NIR-I luminescence of lanthanide nanoparticles excited in NIR-II by plasmonic arrays.

Nanoscale·2026

Same author

Disordered mosaic metasurfaces with scalable functional density.

Nature communications·2026

Search research articles

Related Experiment Video

Updated: Jul 16, 2025

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Two-Dimensional Chiral Metasurfaces Obtained by Geometrically Simple Meta-atom Rotations.

Dmytro Gryb¹, Fedja J Wendisch¹, Andreas Aigner¹

¹Chair in Hybrid Nanosystems, Nano Institute Munich, Department of Physics, Ludwig-Maximilians-Universität München, 80539 Munich, Germany.

|September 19, 2023

Summary

This summary is machine-generated.

This study introduces a simple 2D chiral metasurface design using rotated achiral dielectric rods. This novel platform achieves strong chiroptical responses, simplifying fabrication and optimization for advanced optical applications.

Keywords:

chiral arrangement chirality chiroptical response dielectric metasurface meta atom rotation

More Related Videos

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Related Experiment Videos

Last Updated: Jul 16, 2025

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Demonstration of Spin-Multiplexed and Direction-Multiplexed All-Dielectric Visible Metaholograms

Published on: September 25, 2020

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Fabricating van der Waals Heterostructures with Precise Rotational Alignment

Published on: July 5, 2019

Area of Science:

Optics and Photonics
Materials Science
Nanotechnology

Background:

Two-dimensional chiral metasurfaces challenge traditional chirality definitions.
Complex meta-atom designs often complicate fabrication and optimization without enhancing chiroptical response.

Purpose of the Study:

To present a geometrically simple 2D chiral metasurface platform.
To demonstrate strong chiroptical responses from a simplified design.
To provide a framework for understanding the origin of chirality in such structures.

Main Methods:

Designing a metasurface with achiral dielectric rods in a square lattice.
Inducing chirality by rotating individual meta-atoms.
Comparing experimental and simulation results for chiroptical responses.

Main Results:

Achieved strong chiroptical responses comparable to complex designs.
Demonstrated robustness of resonances against geometric variations.
Identified geometric asymmetry and gap size as key factors for chirality.

Conclusions:

A simple, geometrically straightforward 2D chiral metasurface platform was developed.
The platform offers efficient chiroptical performance and simplified fabrication.
The findings provide fundamental insights into the origin of chirality in metasurfaces.