Bio-Silica Passive Radiative Cooling Film

Made from rice straw

A cooling film that preserves the rice straw's native bio-silica, achieving sub-ambient cooling of 10.8 °C under direct sunlight without adding external SiO₂.

Chunmao, Yang · Cui, Boyu · Yutong, Cui · Jiayan, Ding · Xin, Shu · Wei, Dai · Wang, Weihong

Chemical Engineering Journal 2026

Specifications

太阳反射率

{'zh': '92.82', 'en': ''} %

大气窗口内热发射率

{'zh': '95.76', 'en': ''} %

Advantages

average daytime sub-ambient temperature reduction of 10.8 °C under direct sunlight