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

Imperfections in Crystal Structure: Point, Line and Plane Defects

Imperfections in Crystal Structure: Point, Line and Plane Defects

A perfect crystal, in theory, has a uniform structure with the same unit cell and lattice points throughout. However, any deviation from this periodic arrangement is known as an imperfection or defect. These defects can be categorized into three types: point, line, and plane defects.Point defects occur when there is a deviation from the ideal due to missing atoms, displaced atoms, or additional atoms. These imperfections might occur due to imperfect packing during crystallization or because of...

Law of Rational Indices

Law of Rational Indices

The Law of rational indices is a fundamental principle in the field of crystallography. According to this law, the intercepts of a crystal face along the crystallographic axes (the three-dimensional axes along which a crystal is measured) can be expressed as either equivalent to the unit intercepts (a, b, c) or simple whole number multiples of them. These multiples are typically denoted as na, n'b, and n''c, where n, n', and n'' are simple whole numbers.To illustrate, consider a crystal with...

Imperfections in Crystal Structure: Stoichiometric Point Defects

Imperfections in Crystal Structure: Stoichiometric Point Defects

Schottky defects arise when some lattice points in a crystal, such as those in NaCl, remain unoccupied, creating lattice vacancies without disturbing the overall electrical neutrality of the crystal. This defect is common in ionic crystals where the positive and negative ions are similar in size, as seen in sodium chloride and cesium chloride. The presence of Schottky defects enables the crystal to conduct electricity to a small extent through an ionic mechanism. Electric fields cause nearby...

Symmetry Elements in a Crystal

Symmetry Elements in a Crystal

Crystal symmetry operations are isometric transformations that map objects onto indistinguishable copies while preserving distances, angles, and volumes. The simplest symmetry operation is translation, which shifts the entire infinite crystal lattice parallelly by a translation vector.Crystallographic rotations involve rotations by an angle of 2π/n around an axis without changing the positions of points on the axis. It is called the rotational axis of the symmetry, denoted by n. The combination...

You might also read

Related Articles

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

Sort by

Same author

Analysis of implementation status and influencing factors of standard infection control methods for dental environmental surfaces by dental hygienists in South Korea: a questionnaire-based study.

BMC oral health·2026

Same author

Near-perfect light absorption via degenerate quasi-bound states in the continuum in double-sided gratings with broken in-plane <i>C</i><sub>2</sub> symmetry.

Optics express·2026

Same author

Mirrorless open cavities enabled by boundary incompatibility between perfect electric conductor and perfect magnetic conductor parallel-plate waveguides.

Scientific reports·2026

Same author

Evaluation of Safety of Disposable Saliva Ejectors after Autoclaving Sterilisation.

Oral health & preventive dentistry·2025

Same author

Encoding the glucose identity by discrete hypothalamic neurons via the gut-brain axis.

Neuron·2025

Same author

Extensive Q-factor tuning for leaky modes with minimal frequency variation in asymmetric slab grating structures.

Scientific reports·2024

Search research articles

Related Experiment Video

Updated: Jul 4, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Reflection minimization at two-dimensional photonic crystal interfaces.

Sun-Goo Lee¹, Jin-Sun Choi, Jae-Eun Kim

¹Department of Physics, KAIST, Daejeon 305-701, Korea.

|June 11, 2008

Summary

We developed a method to design antireflection structures for photonic crystals, significantly improving device performance by minimizing light reflection. This enhances optical device efficiency and functionality.

More Related Videos

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

Related Experiment Videos

Last Updated: Jul 4, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities

Published on: November 30, 2012

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Fabrication of 1-D Photonic Crystal Cavity on a Nanofiber Using Femtosecond Laser-induced Ablation

Published on: February 25, 2017

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials

Published on: September 26, 2014

Area of Science:

Photonics
Optical Engineering
Materials Science

Background:

Interfaces between dissimilar optical materials often cause unwanted light reflection.
Minimizing reflection is crucial for efficient light manipulation in photonic devices.

Purpose of the Study:

To propose and validate a method for designing optimal antireflection structures.
To minimize light reflection at interfaces between 2D photonic crystals and homogeneous dielectrics.
To enhance the performance of optical devices utilizing self-collimated beams in photonic crystals.

Main Methods:

Utilizing one-dimensional antireflection coating theory.
Employing finite-difference time-domain (FDTD) simulations for design parameter extraction.
Evaluating device performance using a Mach-Zehnder interferometer with and without the antireflection structure.

Main Results:

Identified design parameters for optimal antireflection structures achieving zero reflection.
Demonstrated significant improvement in Mach-Zehnder interferometer performance.
Quantified the benefits of the antireflection structure in reducing signal loss.

Conclusions:

The proposed antireflection structure design method is effective for photonic crystals.
Optimal antireflection structures substantially enhance the performance of optical devices.
This approach offers a pathway to more efficient integrated photonic systems.