Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Ionic Crystal Structures02:42

Ionic Crystal Structures

17.7K
Ionic crystals consist of two or more different kinds of ions that usually have different sizes. The packing of these ions into a crystal structure is more complex than the packing of metal atoms that are the same size.
Most monatomic ions behave as charged spheres, and their attraction for ions of opposite charge is the same in every direction. Consequently, stable structures for ionic compounds result (1) when ions of one charge are surrounded by as many ions as possible of the opposite...
17.7K
Colors and Magnetism03:02

Colors and Magnetism

14.2K
Color in Coordination Complexes
When atoms or molecules absorb light at the proper frequency, their electrons are excited to higher-energy orbitals. For many main group atoms and molecules, the absorbed photons are in the ultraviolet range of the electromagnetic spectrum, which cannot be detected by the human eye. For coordination compounds, the energy difference between the d orbitals often allows photons in the visible range to be absorbed and emitted, which is seen as colors by the human...
14.2K
Crystal Field Theory - Octahedral Complexes02:58

Crystal Field Theory - Octahedral Complexes

31.0K
Crystal Field Theory
To explain the observed behavior of transition metal complexes (such as colors), a model involving electrostatic interactions between the electrons from the ligands and the electrons in the unhybridized d orbitals of the central metal atom has been developed. This electrostatic model is crystal field theory (CFT). It helps to understand, interpret, and predict the colors, magnetic behavior, and some structures of coordination compounds of transition metals.
CFT focuses on...
31.0K
Perceiving Loudness, Pitch, and Location01:21

Perceiving Loudness, Pitch, and Location

1.0K
The human brain perceives pitch through two primary mechanisms reflected in place theory and frequency theory. Each mechanism describes how sound waves are interpreted as specific pitches by the brain, offering insights into the intricate processes of auditory perception.
Place theory, or place coding, suggests that different pitches are heard because various sound waves activate specific locations along the cochlea's basilar membrane. The brain determines the pitch of a sound by...
1.0K
Color Vision01:24

Color Vision

1.5K
Color perception begins in the retina, the light-sensitive layer at the back of the eye. Two main theories explain how colors are seen: the trichromatic theory and the opponent-process theory. The trichromatic theory, proposed by Thomas Young in 1802 and extended by Hermann von Helmholtz in 1852, suggests that color vision is based on three types of cone receptors in the retina. These cones are sensitive to different but overlapping ranges of wavelengths corresponding to red, blue, and green.
1.5K
Crystal Growth: Principles of Crystallization01:25

Crystal Growth: Principles of Crystallization

5.1K
Crystallization is a phase transformation process in which crystals are precipitated from a supersaturated solution or formed from other sources. During crystallization, atoms or molecules arrange themselves into a well-defined, rigid crystal lattice to minimize energy.
Initiating crystallization involves manipulating the concentration of the solute and the temperature of the solution. Since crystal growth occurs when the ratio of concentration and solubility of the solute in the solvent...
5.1K

You might also read

Related Articles

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

Sort by
Same author

Fractional crystallization of colloids by sequential tuning of depletion forces.

Nature communications·2026
Same author

State-Controlled Exclusive Colloidal Assembly for Composition-Invariant Structural Color Mixing.

ACS nano·2026
Same author

Dual-responsive coloration of Janus droplets via total internal reflection and interference applied as single-use freezing indicators.

Nature communications·2026
Same author

Facile Bottom-Up Assembly of Photonic Micropatterns via Surface-Guided Colloidal Crystallization.

Advanced materials (Deerfield Beach, Fla.)·2025
Same author

Layer-Structured Carbon Nanotube-Boron Nitride Nanotube Nanocomposites with Superior Multifunctional Shielding.

ACS applied materials & interfaces·2025
Same author

Plasmonic-Photonic Hybrid Hydrogels for Slow-Light-Amplified Surface-Enhanced Raman Scattering Detection of Small Molecules.

ACS nano·2025
Same journal

Synergistic Buried Interface Engineering via Ion Exchange and Passivation for High-Performance Inverted Perovskite Solar Cells.

ACS applied materials & interfaces·2026
Same journal

In Situ Wet Coating of Ammonium Phosphomolybdate for Enhancing the Kinetics and Cycling Stability of NaNi<sub>1/3</sub>Fe<sub>1/3</sub>Mn<sub>1/3</sub>O<sub>2</sub> Cathode Material.

ACS applied materials & interfaces·2026
Same journal

Molecular Hybrids of Serum Albumin and Cobalt Phthalocyanine for Asymmetric Oxidation of C=C and C-H Bonds.

ACS applied materials & interfaces·2026
Same journal

A High-Throughput Platform for Measuring and Predicting Vitrification Behavior in Multicomponent Aqueous Solutions.

ACS applied materials & interfaces·2026
Same journal

A Brain-Targeted DNA Delivery Nanocarrier Modulator for Synergistic Therapy of Parkinson's Disease.

ACS applied materials & interfaces·2026
Same journal

Quasi-Discrete Channels of Porous Coordination Polymers for Selective Multiscenario CO<sub>2</sub> Recognition.

ACS applied materials & interfaces·2026
See all related articles

Related Experiment Video

Updated: Feb 12, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
10:33

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

9.0K

Structural Color Mixing in Single-Pitched Cholesteric Liquid Crystals with Dimple Arrays via Dual Retroreflection

Sihun Park1,2, Sang Seok Lee2, Shin-Hyun Kim1,3

  • 1Department of Chemical and Biomolecular Engineering, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, South Korea.

ACS Applied Materials & Interfaces
|February 10, 2026
PubMed
Summary
This summary is machine-generated.

This study introduces a bioinspired method to create dual-band cholesteric liquid crystals (CLCs) from a single pitch. This innovation expands color diversity for applications like adaptive photonic coatings and displays.

Keywords:
cholesteric liquid crystalsdimplesmolecular alignmentretroreflectionstructural colors

More Related Videos

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

9.2K
Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
13:38

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

Published on: April 11, 2017

10.1K

Related Experiment Videos

Last Updated: Feb 12, 2026

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation
10:33

An Electrochemical Cholesteric Liquid Crystalline Device for Quick and Low-Voltage Color Modulation

Published on: February 27, 2019

9.0K
Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals
10:35

Novel Techniques for Observing Structural Dynamics of Photoresponsive Liquid Crystals

Published on: May 29, 2018

9.2K
Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures
13:38

Synthesis of Biocompatible Liquid Crystal Elastomer Foams as Cell Scaffolds for 3D Spatial Cell Cultures

Published on: April 11, 2017

10.1K

Area of Science:

  • Materials Science
  • Optics
  • Biomimetics

Background:

  • Cholesteric liquid crystals (CLCs) produce structural colors via selective reflection but are limited to single-band reflection, restricting color palettes.
  • Achieving broader color diversity often requires complex multilayer fabrication processes.

Purpose of the Study:

  • To develop a novel, bioinspired strategy for generating dual reflection bands from a single-pitched CLC film.
  • To enable color mixing through juxtaposition for enhanced color diversity and functionality.

Main Methods:

  • Integration of CLCs with a poly(vinyl alcohol) (PVA) microdome array to create a periodic dimple architecture, mimicking the dual retroreflection of *Papilio palinurus*.
  • Utilizing curved PVA domes to induce radial alignment of LC helical axes, creating two distinct optical pathways: normal reflection and oblique double reflection.

Main Results:

  • Successful generation of two distinct reflection bands (e.g., NIR/visible, visible/visible, UV/visible) from a single-pitched CLC film.
  • Demonstration of spatially separated reflection features (dot, background, rim) that merge into a unified mixed hue in the far field.
  • Tunable reflection bands and intensity balance by adjusting chiral dopant concentration and microdome density.

Conclusions:

  • The single-pitch, dual-pathway CLC design offers a scalable and versatile platform for advanced photonic applications.
  • Potential applications include adaptive photonic coatings, angle-robust displays, and high-security anticounterfeiting measures.