Phys.org  October 11, 2022 With the help of a 3D printer, researchers in Germany encapsulated the active ingredient IR3535, designed to repel mosquitoes, and formed it into the desired shape, such as a ring, or a bracelet. The item can be worn, and it releases the agent for a long time. The basic idea is that the insect repellent continuously evaporates and forms a barrier for insects. Mosquito sprays containing IR3535 are very gentle on the skin and have been used all over the world for many years. The rate at which the insect repellent evaporates depends on many different […]