"Breakthrough: True One-Way Glass Achieved with Optical Metamaterial"

Researchers at Aalto University have developed a new optical metamaterial leveraging the nonreciprocal magnetoelectric effect, which allows for the creation of true one-way glass. This metamaterial, published in Nature Communications, can be fabricated using existing technology and conventional materials, unlike previous approaches. The potential applications of this technology include creating windows that provide one-way visibility regardless of external brightness, as well as improving the efficiency of solar cells by blocking thermal emissions.