Related Experiment Video
Updated: Mar 19, 2026
06:30
Fabrication of Ultra-thin Color Films with Highly Absorbing Media Using Oblique Angle Deposition
Published on: August 29, 2017
8.8K
Color of anisotropic multilayers
Summary
This study introduces anisotropic materials for creating tunable structural colors in optical devices. These materials offer controllable brightness and purity for applications in sensors and anticounterfeiting.
Area of Science:
- Materials Science
- Optics
- Condensed Matter Physics
Background:
- Structural color arises from light interaction with periodic nanostructures.
- Anisotropic materials offer unique optical properties not found in isotropic materials.
- Controlling light polarization is crucial for advanced optical applications.
Purpose of the Study:
- To propose and analyze anisotropic materials for polarization-dependent structural color generation.
- To design systems for both reflected and transmitted structural colors.
- To explore tunable color properties and brightness control via polarization.
Main Methods:
- Utilizing 1D perfectly periodic structures of anisotropic materials for reflected color.
- Assembling two identical photonic crystals with alternating isotropic and anisotropic layers for transmitted color.
- Investigating the generation of topological modes at interfaces.
Main Results:
- Achieved high brightness and purity in structural colors.
- Demonstrated tunability of color by adjusting layer thicknesses.
- Showcased polarization-dependent control over color brightness.
Conclusions:
- Anisotropic materials enable novel designs for polarization-dependent structural color.
- The proposed systems offer tunable and controllable optical properties.
- Potential applications include optical sensors and anticounterfeiting technologies.
Related Concept Videos
01:35Asymmetric Lipid Bilayer
10.8K
Biological membranes show uneven distribution of different types of lipids in the inner and outer layers, resulting in transverse asymmetric membranes. The treatment of the erythrocyte membrane with the enzyme phospholipase confirmed the asymmetric nature of the lipid bilayer. The enzyme hydrolyzes lipids into fatty acids and hydrophilic groups. The phospholipase acts only on the outer layer of the membrane, while the inner layer remains intact. The phospholipase treatment resulted in 80%...
10.8K
01:31Dielectric Polarization in a Capacitor
6.4K
The presence of a dielectric medium in a capacitor not only changes the voltage and capacitance but also affects the electric field. In general, dielectrics can be of two types: polar and nonpolar. In a polar dielectric, the positive and negative charges in the molecules are separated by a distance and hence have a permanent dipole moment. In contrast, no such charge separation exists in a nonpolar dielectric, however the nonpolar molecules get polarized in the presence of an external electric...
6.4K
03:02Colors and Magnetism
14.5K
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...
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...
14.5K