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Related Experiment Video

Updated: Jul 3, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Multilayer dielectric reflector using low-index nanolattices.

I-Te Chen, Vijay Anirudh Premnath, Chih-Hao Chang

|February 15, 2024

Summary

Researchers developed a novel photonic reflector using titanium dioxide (TiO2) films and nanolattices. This design achieves high reflectivity with fewer layers, offering broad reflectance for applications in nanophotonics and thermal management.

Area of Science:

Optics and photonics
Materials science

Background:

Dielectric mirrors and photonic crystals are crucial for controlling light reflection.
High refractive index contrast is key for reflector performance.

Purpose of the Study:

To demonstrate a high-reflectivity multilayer photonic reflector using TiO2 films and nanolattices.
To achieve high-index contrast for improved reflector performance.

Main Methods:

Fabrication of alternating layers of TiO2 films and low-index nanolattices.
Characterization of broadband reflectance for 1-3 layer reflectors.
Comparison with theoretical optical models.

Main Results:

Achieved peak reflectance of 91.9% at 527 nm.

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Published on: April 26, 2017

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

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Last Updated: Jul 3, 2025

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

TiO2-coated Hollow Glass Microspheres with Superhydrophobic and High IR-reflective Properties Synthesized by a Soft-chemistry Method

Published on: April 26, 2017

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Demonstrated a normalized reflectance bandwidth (Δλ/λo) of 43.6%, the broadest to date.

High reflectivity achieved with fewer layers due to nanolattice-induced index contrast.

Conclusions:

Nanolattice reflectors offer superior performance compared to traditional multilayer reflectors.
The demonstrated technology has potential applications in nanophotonics, radiative cooling, and thermal insulation.