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Self-adaptive control of infrared emissivity in a solution-processed plasmonic structure
Optics Express
|November 23, 2021
Summary
Researchers developed a simple, solution-processed structure for active infrared control. This self-adaptive material dynamically adjusts thermal emission, offering potential for radiative cooling and IR camouflage applications.
Area of Science:
- Nanophotonics
- Materials Science
- Infrared Optics
Background:
- Active control of infrared (IR) optical properties is crucial for thermal emission regulation.
- Existing photonic devices often require complex designs, hindering dynamic IR property control.
Purpose of the Study:
- To demonstrate a simple, self-adaptive structure for dynamic control of IR absorptivity and emissivity.
- To explore the potential of solution-processed oxide plasmonic nanocrystals and vanadium dioxide (VO2) for active photonic applications.
Main Methods:
- Fabrication of a stacked structure using a solution process.
- Incorporation of an oxide plasmonic nanocrystal layer and a phase change material (VO2) layer.
- Investigation of the structure's IR properties based on VO2 phase transitions.
Main Results:
- The stacked structure exhibits self-adaptive control of IR absorptivity/emissivity.
- The resonance wavelength and emission intensity are tunable by the phase state of VO2.
- The structure is fabricated using a cost-effective and scalable solution process.
Conclusions:
- The proposed structure offers a low-cost, scalable platform for active photonic devices.
- Potential applications include self-adaptive radiative cooling and infrared camouflage.
- This approach simplifies the dynamic control of IR properties in photonic structures.
