{"data":{"id":1945,"lang":"en","title":"KAIST Scientists Develop Spray-On Powder That Stops Severe Bleeding in One Second","summary":"KAIST researchers created a spray-on powder that gels in one second to stop severe bleeding, designed for battlefield and emergency medicine use.","category":"science","category_label":"Science","published_at":"2026-07-04T14:01:59Z","updated_at":"2026-07-04T14:01:59Z","url":"https://techtools.cz/tools/news/article/1945-kaist-scientists-develop-spray-on-powder-that-stops-severe-bleeding-in-one","api_url":"https://techtools.cz/news-api/v1/articles/1945?lang=en","markdown_url":"https://techtools.cz/news-api/v1/articles/1945.md?lang=en","image_url":"https://www.sciencedaily.com/images/1920/wounded-soldier-on-ground.webp","word_count":173,"reading_time_minutes":1,"sources":[{"url":"https://www.sciencedaily.com/releases/2026/06/260625014835.htm","domain":"sciencedaily.com"}],"translation":{"lang":"cs","id":2018,"title":"Vědci z KAIST vyvinuli sprejový prášek, který zastaví silné krvácení za jednu sekundu","url":"https://techtools.cz/tools/news/clanek/2018-vedci-z-kaist-vyvinuli-sprejovy-prasek-ktery-zastavi-silne-krvaceni-za-jednu","api_url":"https://techtools.cz/news-api/v1/articles/2018?lang=cs"},"content":"Researchers at South Koreas KAIST, led by professors Steve Park and Sangyong Jon, have developed a spray-on powder that seals life-threatening wounds by turning blood into a gel within about one second. The material, called AGCL powder, combines alginate, gellan gum and chitosan — biocompatible ingredients that react with calcium in blood to trigger near-instant gelation.\n\nThe gel can absorb more than seven times its own weight in blood, letting it block heavy, high-pressure bleeding that conventional patch-type dressings struggle to seal on deep or irregular wounds. In testing, the powder showed a hemolysis rate below 3%, cell viability above 99%, and a 99.9% antibacterial effect, while remaining stable for two years at room temperature even in high humidity.\n\nThe team, which includes PhD candidate and Army Major Kyusoon Park, developed the powder with combat medicine in mind — excessive blood loss remains the leading cause of death on the battlefield — but say it could also be used in ambulances, emergency rooms and civilian surgery. The findings were published in the journal Advanced Functional Materials."}}