研究目的
To fabricate large-scale black films with a nacre-like microstructure and carbon nanotubes inclusion for enhanced light absorption and mechanical toughness.
研究成果
The study demonstrated that structurally assisted blackness can be boosted by layered structures, offering a new design strategy toward blackbody coatings which can be fabricated in a cost-effective and large-scalable way. Further efforts will focus on tuning the layered structures for enhanced absorbance.
研究不足
The fabrication of self-assembled layered structures is much easier and suitable for large-scale manufacturing, but the study does not explore the tuning of layered structures with thickness and distance in a gradient way for absorbance on par with ordered carbon nanotube forests.
1：Experimental Design and Method Selection:
The fabrication is based on the vacuum-assisted self-assembly (VASA) method, extending this strategy to prepare a blackbody film by additional inclusion of black absorbers.
2：Sample Selection and Data Sources:
Selected PVA and MMT nanosheets as the polymer matrix and reinforcing nanofiller, respectively, with carboxyl modified carbon nanotubes included for efficient light absorption.
3：List of Experimental Equipment and Materials:
Montmorillonite (MMT) nanosheets, polyvinyl alcohol (PVA), and multi-walled carbon nanotubes (CNTs).
4：Experimental Procedures and Operational Workflow:
The hybrid building blocks were dispersed in deionized water after sonication and formed a paper-like, free-standing black film after vacuum-filtration self-assembly.
5：Data Analysis Methods:
The diffuse reflectance spectra of the lamellar films were analyzed to confirm broadband absorption.
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