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深紫外UV LED用于門把手自行消毒

搭載UV LED，門把手可自行消毒

UV LED技術(shù)越來越接近我們的日常生活，可用于減少細菌，改善衛(wèi)生狀況。隨著技術(shù)的進步，UV LED的應(yīng)用形式越來越豐富。例如，今年以來，市場上出現(xiàn)了多款搭載UV LED提供自動消毒的水杯。與此同時，還出現(xiàn)了無人機搭載UV LED的應(yīng)用。

近期，UV LED技術(shù)又多了一個應(yīng)用形式，有研究者將UV LED集成在公共門把手上，提供自動清潔和消毒。

據(jù)報道，香港中文大學(xué)的兩位研究生設(shè)計了自動清潔門把手，并且被評選進2019詹姆斯戴森獎（James Dyson Award）的前二十名。

報道稱，這兩位研究生受2003年非典型肺炎 (SARS)爆發(fā)的啟發(fā)，當時病毒是通過接觸傳播。他們設(shè)計這種自動清潔門把手旨在阻止傳染性疾病的傳播，改善公共衛(wèi)生。

該研究小組采用一種由UV LED激活的薄光催化涂層來分解基板表面上的細菌。由于需要一致的UV光源，所以他們添加了一個發(fā)電機，提供穩(wěn)定的電流以點亮UV LED燈，而這個過程可以通過開關(guān)門來實現(xiàn)。透明玻璃門把手里會發(fā)生光反射以激活外表面上的涂層，如此一來，門把手就可自行消毒和清潔。

這兩位研究者表示，他們旨在將這個產(chǎn)品的商業(yè)化，希望這款門把手能夠應(yīng)用到商場、酒店、億元及公共浴室等感染風(fēng)險較高的公共場所。

Equipped with UV LED, the door handle can be self disinfected

UV LED technology is more and more close to our daily life, which can be used to reduce bacteria and improve health. With the development of technology, the application forms of UV LED are more and more abundant. For example, since this year, there have been several water cups equipped with UV led to provide automatic disinfection. At the same time, there are also applications of UAV equipped with UV LED.

Recently, UV LED technology has another application form. Some researchers integrate UV LED on the public door handle to provide automatic cleaning and disinfection.

Photo source: James Dyson Award

According to reports, two graduate students from the Chinese University of Hong Kong have designed self-cleaning doorknobs and have been selected as the top 20 at the James Dyson award in 2019.

The two students were inspired by the outbreak of SARS in 2003, when the virus spread through contact, the report said. They designed the self-cleaning door handle to stop the spread of infectious diseases and improve public health.

The team used a thin photocatalytic coating activated by UV LEDs to break down bacteria on the surface of the substrate. Because of the need for a consistent UV light source, they added a generator to provide a stable current to light the UV LED, which can be achieved by opening and closing the door. The transparent glass doorknob will reflect light to activate the coating on the outer surface, so that the doorknob can be disinfected and cleaned by itself.

The two researchers said they aimed to commercialize the product and hoped that the door handle could be used in shopping malls, hotels, hospitals, public bathrooms and other public places with high risk of infection.