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Programmable Interface Atomic Rearrangement for Spatiotemporal Thermal Radiation Tailoring.

Xinye Liao1, Mingyu Luo2, Zhaojian Zhang1

  • 1College of Sciences, National University of Defense Technology, Changsha 410073, China.

Research (Washington, D.C.)
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Summary
This summary is machine-generated.

Researchers developed a new spatiotemporal modulation strategy for thermal radiation, overcoming information loss in current carriers. This method uses atomic rearrangement metamaterials for dynamic emissivity control, enabling advanced photonic applications.

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Area of Science:

  • Photonics and Materials Science
  • Focuses on the manipulation of thermal radiation for advanced applications.

Background:

  • Current thermal radiation carriers have limited discrete states, causing significant information loss.
  • Dynamic control of thermal radiation is crucial for novel information carriers and photonic applications.

Purpose of the Study:

  • To propose and validate a novel spatiotemporal modulation strategy for thermal radiation.
  • To overcome limitations of discrete radiation states and capture dynamic processes.

Main Methods:

  • Utilized an Ag-In3SbTe2 (IST) interface atomic rearrangement metamaterial (ARM).
  • Employed gentle, uniform modulation of atomic configurations for permittivity tailoring.
  • Experimentally validated the spatiotemporal modulation strategy.

Main Results:

  • Achieved continuous spectral modulation with high amplitudes (64.74% in 3-5 μm, 73.94% in 8-14 μm).
  • Demonstrated rich temporal variations for tailored infrared emissivity.
  • Successfully realized infrared information encryption.

Conclusions:

  • Established a unified framework for continuous, atomic-scale spatiotemporal control of thermal radiation.
  • Opened new pathways for spectral modulation and photonic information regulation in the time domain.