Self-disinfecting Door Handle, Capable Of Eliminating 99.8% Of Bacteria

In these times, you would rather have a self-sanitizing handle than having to sanitize it manually, as it can spiral into infections very quickly. Hong Kong students Sum Ming Wong and Kin Pong Li have designed a doorknob that uses light to always keep it sterile. In 2020, this is classified as a smart object and something important such as hand washing.

The students were inspired by the SARS outbreak in the 2000s and thought that a self-sanitizing door handle is more effective than the chemical-based cleaning processes we are using right now.

The handle is made from a glass tube with aluminum caps on each end and the entire handle is covered in a photocatalytic powder coating made from a mineral called titanium dioxide. The bacteria break down through a chemical reaction that is activated by UV light reacting with the thin layer of the glass tube.

Powered by an internal generator, the handle converts the kinetic energy of the door opening and closing movement into light energy and this is how UV light always does its job. This germ-killing product killed 99.8% of microbes during laboratory testing.

It has a modern visual aesthetic and an elegant shape. The backlighting almost makes it look like a lava lamp.

The students thought about the number of people infected and killed during SARS and wanted to do something to change the landscape of public health through innovative design. Since public door handles are hotbeds for bacteria, this could be an advantage in creating a safer infrastructure for a world that is better prepared to handle pandemics.

The self-sanitizing door handle was one of the winning candidates for the 2019 James Dyson Awards.

Designers: Sum Ming Wong and Kin Pong Li.

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