Researchers from the Republic of Korea devised “smart” timber for windows capable of almost entirely stopping ultraviolet radiation and automatically adjusting clarity. The investigation was conducted by a team led by Professor Sung Ho Song from Kongju National University; the findings are documented in the journal Advanced Composites and Hybrid Materials, according to the “Science Russia” portal.
The core of the innovation is modified balsa wood featuring a photopolymerizable liquid crystal polymer (PDLC) activated by ultraviolet light. This substance alters light transmission based on temperature without needing electrical power: at ambient temperature, it stays translucent, while upon heating to 40 degrees, it becomes nearly clear.
According to the paper’s authors, the visible light transmittance factor rises from 28 to 78 percent, while the material blocks virtually 100 percent of UVA radiation. The thermal conductivity of the novel wood is about five times lower than that of glass, which helps reduce heat loss in structures.
The creators believe this technology could be utilized in residences, greenhouses, and medical equipment. The material offers privacy after dark, natural illumination during the day, and cuts energy expenses for heating and cooling spaces.
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