<p>Tanja Nickel and Katharina Obladen were still in high school when they patented an idea to disinfect escalator handrails using UV light.</p>.<p>A decade later, their small German start-up UVIS can barely keep up with orders from around the world for their <a href="https://www.deccanherald.com/coronavirus-live-news-covid-19-latest-updates"><b>coronavirus</b></a>-killing escalators and coatings for supermarket trolleys and elevator buttons.</p>.<p><a href="https://www.deccanherald.com/national/coronavirus-live-updates-all-doctors-and-hospitals-to-light-a-candle-at-9pm-on-april-22-as-protest-says-ima-827545.html"><b>Track live updates on coronavirus here</b></a></p>.<p>"Everybody wants it done yesterday," Obladen, 28, told AFP at the company's workshop in central Cologne.</p>.<p>"The pandemic has made businesses realise they need to invest in hygiene precautions for staff and customers. It's gone from nice-to-have to must-have."</p>.<p><b>Also Read: </b><a href="https://www.deccanherald.com/national/coronavirus-state-wise-india-update-total-number-of-confirmed-cases-deaths-on-april-26-829988.html"><b>Coronavirus India update: State-wise total number of confirmed cases</b></a></p>.<p>As Germany begins to relax some lockdown restrictions, the start-up's five-person team has been inundated with requests from shops, offices and cafes eager to reopen to a public newly aware of the health risks lurking in shared spaces.</p>.<p>Friends since kindergarten, Nickel and Obladen were 17 and 18 years old when they entered an inventors' competition.</p>.<p>Worried about the swine flu pandemic at the time, they wanted to come up with something to make public places germ-free.</p>.<p>Inspired by New York City's use of ultraviolet radiation to sterilise drinking water, they designed a UV light box that can be built into escalators to disinfect handrails, with the radiation destroying the DNA of disease-causing micro-organisms.</p>.<p>They asked their families for help filing the patent.</p>.<p>"They knew us and knew we would stick with it," Obladen recalled.</p>.<p>After finishing university, the pair founded UVIS in 2016 with seed money from programmes for start-ups. They remain a rare example in Germany of women running an engineering firm.</p>.<p>This year, the duo added an antimicrobial coating to their line-up, not based on UV technology. The invisible coating can be sprayed onto surfaces to destroy mould, bacteria and viruses like the novel coronavirus, using the self-cleaning properties of titanium dioxide.</p>.<p>Europe's largest elevator and escalator makers -- Thyssenkrupp, Schindler, Otis and Kone -- were early customers, putting the women's ultraviolet light boxes, called Escalite modules, in escalators in malls, hospitals and train stations.</p>.<p>But the coronavirus has seen demand explode.</p>.<p>"We've already surpassed our revenue target for 2020," said 27-year-old Nickel, declining to give figures.</p>.<p>Interest has been especially strong in Europe and Asia. The start-up recently shipped over 30 escalator modules to Singapore.</p>.<p>Standing in the same workshop where her electrician grandfather used to tinker away and where his old hard hats still line the shelves, Obladen demonstrated how the light box works.</p>.<p>Three blue-glowing UVC lamps, emitting the strongest kind of UV beams and highly dangerous when exposed to skin and eyes, line the inside of a rectangular metal case.</p>.<p>The escalator's handrail passes through the case as it continually loops around, getting a full blast of germ-killing radiation.</p>.<p>The metal case, roughly the size of an adult arm, and an accompanying power box can be fitted into any escalator, which Obladen said was "the biggest challenge".</p>.<p>UV disinfection was already routinely used in the food industry and hospitals worldwide before COVID-19 spurred wider calls for the technology.</p>.<p>In China, where the virus first emerged, it has been used to clean buses and banknotes.</p>.<p>Obladen said they too were considering other ways to deploy UVC light, but that safety comes first.</p>.<p>US President Donald Trump recently suggested using UV rays on coronavirus patients, prompting stunned medical experts to warn it could cause burns and skin cancer.</p>.<p>The World Health Organization also warns against using UV lamps on skin.</p>.<p>Obladen said joy at the company's boom has been "dampened" by concern over the pandemic and the struggles of friends in other start-ups.</p>.<p>Looking ahead, Obladen and Nickel plan to ramp up production capacity and expand their coating services.</p>.<p>They have already been busily spraying elevator panels, counter tops and seats for a range of soon-to-reopen businesses, as well as handles of supermarket trolleys.</p>.<p>"We're looking at other areas too, we've had a bank asking about using UV light to disinfect money in cash machines in combination with a coating for the touchscreen," Obladen said.</p>.<p>"It's exciting to think about new ways to use our know-how."</p>
<p>Tanja Nickel and Katharina Obladen were still in high school when they patented an idea to disinfect escalator handrails using UV light.</p>.<p>A decade later, their small German start-up UVIS can barely keep up with orders from around the world for their <a href="https://www.deccanherald.com/coronavirus-live-news-covid-19-latest-updates"><b>coronavirus</b></a>-killing escalators and coatings for supermarket trolleys and elevator buttons.</p>.<p><a href="https://www.deccanherald.com/national/coronavirus-live-updates-all-doctors-and-hospitals-to-light-a-candle-at-9pm-on-april-22-as-protest-says-ima-827545.html"><b>Track live updates on coronavirus here</b></a></p>.<p>"Everybody wants it done yesterday," Obladen, 28, told AFP at the company's workshop in central Cologne.</p>.<p>"The pandemic has made businesses realise they need to invest in hygiene precautions for staff and customers. It's gone from nice-to-have to must-have."</p>.<p><b>Also Read: </b><a href="https://www.deccanherald.com/national/coronavirus-state-wise-india-update-total-number-of-confirmed-cases-deaths-on-april-26-829988.html"><b>Coronavirus India update: State-wise total number of confirmed cases</b></a></p>.<p>As Germany begins to relax some lockdown restrictions, the start-up's five-person team has been inundated with requests from shops, offices and cafes eager to reopen to a public newly aware of the health risks lurking in shared spaces.</p>.<p>Friends since kindergarten, Nickel and Obladen were 17 and 18 years old when they entered an inventors' competition.</p>.<p>Worried about the swine flu pandemic at the time, they wanted to come up with something to make public places germ-free.</p>.<p>Inspired by New York City's use of ultraviolet radiation to sterilise drinking water, they designed a UV light box that can be built into escalators to disinfect handrails, with the radiation destroying the DNA of disease-causing micro-organisms.</p>.<p>They asked their families for help filing the patent.</p>.<p>"They knew us and knew we would stick with it," Obladen recalled.</p>.<p>After finishing university, the pair founded UVIS in 2016 with seed money from programmes for start-ups. They remain a rare example in Germany of women running an engineering firm.</p>.<p>This year, the duo added an antimicrobial coating to their line-up, not based on UV technology. The invisible coating can be sprayed onto surfaces to destroy mould, bacteria and viruses like the novel coronavirus, using the self-cleaning properties of titanium dioxide.</p>.<p>Europe's largest elevator and escalator makers -- Thyssenkrupp, Schindler, Otis and Kone -- were early customers, putting the women's ultraviolet light boxes, called Escalite modules, in escalators in malls, hospitals and train stations.</p>.<p>But the coronavirus has seen demand explode.</p>.<p>"We've already surpassed our revenue target for 2020," said 27-year-old Nickel, declining to give figures.</p>.<p>Interest has been especially strong in Europe and Asia. The start-up recently shipped over 30 escalator modules to Singapore.</p>.<p>Standing in the same workshop where her electrician grandfather used to tinker away and where his old hard hats still line the shelves, Obladen demonstrated how the light box works.</p>.<p>Three blue-glowing UVC lamps, emitting the strongest kind of UV beams and highly dangerous when exposed to skin and eyes, line the inside of a rectangular metal case.</p>.<p>The escalator's handrail passes through the case as it continually loops around, getting a full blast of germ-killing radiation.</p>.<p>The metal case, roughly the size of an adult arm, and an accompanying power box can be fitted into any escalator, which Obladen said was "the biggest challenge".</p>.<p>UV disinfection was already routinely used in the food industry and hospitals worldwide before COVID-19 spurred wider calls for the technology.</p>.<p>In China, where the virus first emerged, it has been used to clean buses and banknotes.</p>.<p>Obladen said they too were considering other ways to deploy UVC light, but that safety comes first.</p>.<p>US President Donald Trump recently suggested using UV rays on coronavirus patients, prompting stunned medical experts to warn it could cause burns and skin cancer.</p>.<p>The World Health Organization also warns against using UV lamps on skin.</p>.<p>Obladen said joy at the company's boom has been "dampened" by concern over the pandemic and the struggles of friends in other start-ups.</p>.<p>Looking ahead, Obladen and Nickel plan to ramp up production capacity and expand their coating services.</p>.<p>They have already been busily spraying elevator panels, counter tops and seats for a range of soon-to-reopen businesses, as well as handles of supermarket trolleys.</p>.<p>"We're looking at other areas too, we've had a bank asking about using UV light to disinfect money in cash machines in combination with a coating for the touchscreen," Obladen said.</p>.<p>"It's exciting to think about new ways to use our know-how."</p>