Built-in LED bactericidal ultraviolet lamp to achieve "the cleanest" door handle

Tencent digital news, door handles may be one of the most "dirty" objects in our daily life - they are touched by many people every day, but often do not often get clean and disinfectant. Now, two high school students from the Hongkong Special Administrative Region, China, aim at the problem, developing a new door handle that does not need to use stimulant chemicals, without regular cleaning, and can kill bacteria through a built-in ultraviolet lamp.

The two youngsters were Simon Wong (Simon Wong) and Michael Lee (Michael Li), and their recent Intel international science and engineering Grand Prix (ISEF) adopted the door handle with two antibacterial techniques: first, its visible surface was made of titanium dioxide - this natural Metal oxides have their own antibacterial properties; then, it has a special glass tube that launches ultraviolet light. It can launch ultraviolet light every time someone opens the door with it and effectively destroys the DNA that may be attached to the surface of the handle, thereby blocking their reproduction.

In addition to titanium dioxide and ultraviolet bactericidal, the doorknob has an ingenious design: it does not require an external power supply or a battery, a set of built-in transmission can convert the opening and closing of the operation into electrical energy to provide enough power for the built-in LED lamp.

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