Phys.org reported on Monday, November 2, 2026, that researchers have developed a smart window capable of growing a silver shield on its own to keep the heat of sunlight from passing through. According to Phys.org, the window produces this silver layer itself rather than relying on a coating applied during manufacturing.
The report describes the silver shield as the mechanism that blocks solar heat. Beyond that, the available summary does not specify the materials involved, the method used to form the silver layer, or how much heat the window is able to reject.
The work fits into a broader push toward windows that respond to sunlight instead of simply letting it through. Phys.org frames the development around heat control, presenting the self-forming silver layer as the means by which the window limits how much of the sun's warmth enters a building.
Details such as performance figures, the research team behind the work, and any plans for commercial use were not included in the material available. Those specifics would be needed to judge how the window compares with existing heat-blocking glass products.
Watch for the full study or follow-up reporting from Phys.org, which should clarify how the silver layer forms, how well it performs, and whether the approach can be scaled beyond the lab.