Kills bacteria with UVC light

Kill coronaviruses with UV light

Light kills bacteria, germs and viruses extremely efficiently. The Viennese company Photonic explains why the corona pandemic could herald a rethinking of disinfection.

One reason for the rapid spread of Covid-19 is the long survival time of the virus on surfaces and objects compared to other types of viruses. Disinfectants are conventionally used to combat viruses on surfaces. However, areas of public life such as public transport, grocery stores or toilets cannot be permanently cleaned with disinfectants.

Table of Contents

1. Disinfection with UV light
2. UV curing chamber for objects of any shape
3. Areas of application of photodynamic disinfection
4. Reactive oxygen kills germs, viruses and bacteria
5. Optimally equipped for application-specific solutions

Disinfection with UV light

A simple and efficient alternative to this is the Disinfection using UV light. This method has been used successfully for years in food production, drinking water treatment and the disinfection of ventilation systems. The Chinese metropolis Shanghai even went a step further and is now using this technology in a car wash to disinfect local buses. Even more pioneering are autonomous robots, which in many Chinese hospitals also use ultraviolet light to kill viruses and bacteria.

UV curing chamber for objects of any shape

“So that surfaces can be disinfected efficiently using UV light, the object must be irradiated evenly with a sufficient dose. The Photonic Optical Devices GmbH & Co KG Thanks to their know-how in the field of lighting technology, they are optimally equipped to implement such application-specific solutions quickly and efficiently, ”explains Photonic's head of development Stefan Zotter. “Our experts recently designed a UV curing chamber that can be of any shape 3D printed objects can be irradiated homogeneously from all sides with UV LEDs. In doing so, parameters such as the selection and positioning of the UV LEDs, the surface material of the chamber, the control of the individual LEDs and the thermal management of the system had to be carefully considered Photonic supports in all steps of product development. From the first concepts to series production, the lighting experts bring their many years of experience in the fields of optics, mechanics, electronics and software to the project and thus contribute to the success of customer products.

Application areas of photodynamic disinfection

In many areas the Disinfection with UV light but to their limits. UV radiation and especially short-wave UV-C light, which is mostly used in the area of ​​surface disinfection, is extremely dangerous for people without adequate protection. The harmful radiation can cause serious injury to the eye and, through absorption in the skin, cause cell changes and cancer. That is why alcoholic solutions are still used in the field of hand disinfection, which can lead to skin irritations if used frequently. In addition, numerous studies show that most people do not properly disinfect their hands.

Reactive oxygen kills germs, viruses and bacteria

In contrast, the photodynamic disinfection a harmless liquid, Photosenitizer called, used in combination with harmless, visible light. The light-active substance is applied to the object and, through reaction with light and air, generates reactive oxygen, which kills germs, viruses and bacteria very efficiently. This procedure is used very successfully in the treatment of poorly healing wounds and in dentistry or dermatology. “In the future, the combination of hand washing and thorough rubbing with disinfectants, which is still necessary today, could be carried out by the photodynamic disinfection be replaced "is Stefan Zotter convinced. “For that one would Photosensitizer apply by rubbing in evenly and by irradiating with light kill unwanted germs, bacteria and viruses. "

Optimally equipped for application-specific solutions

The biggest challenge, however, is rethinking that an additional device is required in addition to the disinfectant. A system that has a lot of experience and know-how in the field of optomechatronics. It's not just that factor that comes along Photonic opposite. “Customers who want to implement innovative products for disinfection benefit from working with us when defining the product requirements. When coordinating the requirements for a device, we draw on a wide range of knowledge that comes from our daily work with normative and regulatory safety requirements relating to the generation and control of light. Our customers can therefore rely on the fact that their system requirements will withstand the reality check of a product approval and manufacturability, see above Photonic Business Developer Joachim Enengl.

Contact to the company:

Photonic Optical Devices GmbH & Co KG
Seeböckgasse 59
A-1160 Vienna
Tel .: +43 1 4865691-0
Website: www.photonic.at