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Scientists at the Ulsan National Institute of Science and Technology (UNIST) in Korea have created the world's fastest oxide-based evaporator for converting seawater into drinking water using sunlight, without electricity. This ternary-oxide evaporator incorporates a new photothermal material that absorbs 97% of sunlight, achieving surface temperatures of 176°F (80°C) and increasing evaporation rates by seven times compared to natural processes.

The design includes an inverted U-shape and utilizes water-wicking fibers to prevent salt buildup, producing approximately 1.4 gallons (4.1 liters) of freshwater per hour from a 1-square-meter surface. This innovation aims to address water scarcity in remote communities and developing countries.