2021-05-17 14:35:45 GMT2021-05-17 22:35:45(Beijing Time) Xinhua English LISBON, May 17 (Xinhua) -- Scientists at the University of Coimbra (UC) in the north of Portugal said on Monday that they had developed a varnish that kills even the most resistant bacteria in just 15 minutes. The objective of their research is to find "a safe and effective solution to prevent and combat hospital infections," the UC said in a statement. "This new intelligent varnish has high antimicrobial efficacy, which is activated by white light that is harmless to humans," the scientists said. The findings of their research were published in the scientific journal ACS Applied Materials & Interfaces and financed by the Foundation for Science and Technology of the Ministry of Education and Science of Portugal.