Hong Kong Students Invent UV LED-based Self-sanitizing Door Handle Powered by Door Movement

UV LED technology has come closer to our daily life for diminishing bacteria and enhancing hygiene. One way to apply the technology could be integrating UV LEDs with public door handles. Two graduate students of the Chinese University in Hong Kong designed the self-sanitizing door handle and was selected as the top 20 in the James Dyson Award in 2019.

Sum Ming Wong and Kin Pong Li, the inventors of the self-sanitizing door handle, were inspired by the SARS outbreak in 2003 when the infection spread out via contact. The door handle was created to prevent contagious disease transmission and improve public health.


(Image: James Dyson Award)

The team used a thin photocatalytic coating activated by UV LED to decompose bacteria on the surface of a substrate. As a consistent UV light source is required, a generator is added to provide stable electricity to light up a UV LED lamp through the motion of opening and closing door. Reflections of light could occur inside a transparent glass door handle to activate coating on the outer surface. In this way, the door handle can sterilize and clean by itself.

Wong and Li said that they aim to commercialize the product and hope the handle can be applied in public areas with higher infection risk such as shopping malls, hotels, hospitals and public bathrooms.

Disclaimers of Warranties
1. The website does not warrant the following:
1.1 The services from the website meets your requirement;
1.2 The accuracy, completeness, or timeliness of the service;
1.3 The accuracy, reliability of conclusions drawn from using the service;
1.4 The accuracy, completeness, or timeliness, or security of any information that you download from the website
2. The services provided by the website is intended for your reference only. The website shall be not be responsible for investment decisions, damages, or other losses resulting from use of the website or the information contained therein<
Proprietary Rights
You may not reproduce, modify, create derivative works from, display, perform, publish, distribute, disseminate, broadcast or circulate to any third party, any materials contained on the services without the express prior written consent of the website or its legal owner.
Display devices have been used for many years as a means of HMI (Human Machine Interface) to connect humans and machines interactively, and their usage are still expanding. Automotive interiors are no exception to this trend, with an increasing ... READ MORE
About LiDAR Automotive industry trends In recent years, many vehicles have been launched with ADAS (Advanced Driver Assistance Systems) as standard equipment. As the future evolves towards more automated driving, sensing around the vehicle i... READ MORE