Anodization-Processed Colored Radiative Thermoregulatory Film

Area of Science:

• Materials Science
• Nanotechnology
• Thermal Engineering

Background:

• Colored radiative thermal management materials (RTMM) offer thermoregulation and aesthetic appeal.
• Current preparation methods are complex and limit color choices, hindering adoption.

Purpose of the Study:

• To develop a facile, one-step strategy for fabricating colored dual-mode RTMM.
• To enable on-demand temperature modulation with high performance and aesthetic versatility.

Main Methods:

• A one-step anodizing strategy was employed to fabricate colored dual-mode RTMM using titanium film (Ti) and P(VDF-HFP).
• Mid-infrared (MIR) emissivities were measured for the fabricated materials.

Main Results:

• The fabricated RTMM exhibited dual-mode temperature modulation with MIR emissivities of 0.07 (low) and 0.96 (high).
• On-demand temperature modulation achieved a rise of 28.2 K and a drop of 9 K without external energy input.
• A colored radiative warming membrane demonstrated a 2.3 K temperature rise on human skin, outperforming commercial fabrics.

Conclusions:

• The facile anodizing strategy enables scalable fabrication of colored low-emissivity materials.
• This advancement contributes to energy-efficient temperature management solutions and sustainable development.
• The developed RTMM satisfy both performance and aesthetic requirements for broader applications.