Electrochromic-Tuned Plasmonics for Photothermal Sterile Window
Jingwen Xu1, Yong Zhang, Ting-Ting Zhai
1College of Sciences , Northeastern University , 110004 Shenyang , China.
ACS Nano
|July 3, 2018
Summary
This study introduces a novel electrochromic-photothermal film for smart windows. The film integrates tungsten oxide (WO3) with gold (Au) nanostructures to control visible light, heat, and reduce microbes.
Area of Science:
- Materials Science
- Nanotechnology
- Optoelectronics
Background:
- Electrochromic materials are key for smart windows, primarily controlling visible light.
- Existing technologies often overlook near-infrared (NIR) radiation management and antimicrobial properties.
- There is a need for advanced smart window materials with multi-functional capabilities.
Purpose of the Study:
- To fabricate and characterize an electrochromic-photothermal film.
- To demonstrate tunable optical transmission and photothermal conversion.
- To evaluate the film's potential for visible light control, heat management, and antimicrobial activity.
Main Methods:
- Integration of electrochromic tungsten oxide (WO3) with plasmonic gold (Au) nanostructures.
- Fabrication of a composite electrochromic-photothermal film.
- Characterization of optical transmission and photothermal conversion properties under electrical modulation.
- Assessment of antimicrobial efficacy.
Main Results:
- The developed film exhibits adjustable optical transmission for visible light.
- Tunable photothermal conversion of both visible and near-infrared (NIR) solar radiation was achieved.
- Enhanced photothermal conversion was observed in the colored state due to coupled optical switching and NIR-LSPR extinction.
- The film demonstrated significant reduction in microbial presence.
Conclusions:
- The electrochromic-photothermal film offers multi-functional control over light and heat.
- Coupling plasmonic and electrochromic properties enhances photothermal performance.
- The material shows promise for advanced sterile smart window applications.
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