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Related Concept Videos

Radiation: Applications01:17

Radiation: Applications

The average temperature of Earth is the subject of much current discussion. Earth is in radiative contact with both the Sun and dark space; it receives almost all its energy from the radiation of the Sun and reflects some of it into outer space. Dark space is very cold, about 3 K, so Earth radiates energy into it. For instance, heat transfer occurs from soil and grasses, the rate of which can be so rapid that frost can occur on clear summer evenings, even in warm latitudes.
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Mechanisms of Heat Transfer II01:20

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In convection, thermal energy is carried by the large-scale flow of matter. Ocean currents and large-scale atmospheric circulation, which result from the buoyancy of warm air and water, transfer hot air from the tropics toward the poles and cold air from the poles toward the tropics. The Earth’s rotation interacts with those flows, causing the observed eastward flow of air in the temperate zones. Convection dominates heat transfer by air, and the amount of available space for the airflow...
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  3. Broadband Radiative Heat Transfer Suppression Via Dispersion-engineered Metasurfaces.
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  3. Broadband Radiative Heat Transfer Suppression Via Dispersion-engineered Metasurfaces.

Related Experiment Video

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Broadband Radiative Heat Transfer Suppression via Dispersion-Engineered Metasurfaces.

Lin Jing1, Mingze He1, Sander A Mann1,2

  • 1Photonics Initiative, Advanced Science Research Center, City University of New York, New York, NY, 10031, USA.

Nature Communications
|June 26, 2026

View abstract on PubMed

Summary
This summary is machine-generated.

This study introduces a novel dielectric metasurface pair for effective broadband thermal radiation suppression, overcoming limitations of traditional methods. The all-dielectric approach offers significant heat transfer reduction without metallic components.

More Related Videos

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Related Experiment Videos

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces
09:33

Demonstration of Equal-Intensity Beam Generation by Dielectric Metasurfaces

Published on: June 7, 2019

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers
13:44

Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

Published on: December 27, 2012

Area of Science:

  • Nanophotonics and Metamaterials
  • Thermal Engineering
  • Materials Science

Background:

  • Metallic reflectors for radiative heat transfer suppression face limitations due to electrical conduction and material incompatibility.
  • Non-metallic thermophotonic approaches are constrained by the Bode-Fano limit, leading to performance-bandwidth trade-offs.

Purpose of the Study:

  • To develop a novel strategy for broadband radiative heat transfer suppression using complementary dispersion engineering in dielectric metasurfaces.
  • To overcome the limitations of conventional thermophotonic approaches and metallic reflectors.

Main Methods:

  • Co-design of aperiodic distributed Bragg reflector (DBR) pairs using stochastic gradient descent (SGD) optimization.
  • Leveraging complementary dispersion engineering to misalign passbands across the thermal band of interest.
  • Fabrication of a 7-layered (7-L) dielectric metasurface pair.

    • Main Results:

    • Significant reduction in radiative heat exchange compared to fused silica benchmarks (82% via emissivity, 62.5% via radiometric quantification).
    • Demonstrated broadband thermal decoupling within a compact, ultrathin all-dielectric platform.
    • Exhibited robustness against design/fabrication tolerances and operational temperature drift (320-500 K).

    Conclusions:

    • Established a generalizable framework for bandwidth-unconstrained thermal radiation engineering.
    • The all-dielectric metasurface approach circumvents metallic component limitations, enabling new possibilities for thermal management.
    • Potential applications in energy-efficient systems, thermal insulation, and advanced thermal management solutions.