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Updated: May 6, 2026
09:10
The Frequency Domain Thermoreflectance Technique for Thermal Property Measurements
Published on: December 5, 2025
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A Low-Voltage Multi-Band Tunable Smart Window for Self-Adaptive Thermoregulation
Zuowei Zhang1, Yihai Yang2, Gaoyuan Gu1
1Liaoning Key Laboratory for Surface Functionalization of Titanium Dioxide Powder, School of Materials and Environmental Engineering, Bohai University, Jinzhou, Liaoning, China.
Advanced Materials (Deerfield Beach, Fla.)
|May 5, 2026
Summary
This study introduces a low-voltage polymer-dispersed liquid crystal (PDLC) smart window with enhanced spectral regulation. The novel design achieves significant reductions in driving voltage and improved temperature control for energy savings.
Area of Science:
- Materials Science
- Nanotechnology
- Energy
Background:
- Polymer-dispersed liquid crystal (PDLC) smart windows are limited by high driving voltages and poor spectral regulation.
- Existing technologies struggle to balance visible light transmission with thermal modulation.
Purpose of the Study:
- To develop a low-voltage PDLC smart window with multi-band spectral modulation capabilities.
- To enhance the electro-optical performance and thermal regulation of smart windows.
Main Methods:
- Incorporation of p-n heterojunction nanoparticles into PDLC films.
- Integration of W-VO2/PMMA for tunable infrared emissivity.
- Characterization of electro-optical properties and spectral modulation.
Main Results:
- Achieved a 35.1% reduction in saturation voltage (to 16.3 V) and a contrast ratio of 130.
- Demonstrated switchable long-wave infrared emissivity (0.75 to 0.41) for passive radiative cooling.
- Confirmed effective temperature regulation (8°C cooling, 2°C insulation) and energy savings.
Conclusions:
- The developed V-PDLC smart window offers low-voltage operation and effective multi-band spectral control.
- This technology enables passive radiative cooling and significant energy savings across diverse climates.
- Provides a pathway for advanced, adaptive smart window applications.
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