“A new technology that has a scientific basis” – Corriere.it

from Massimo Sideri

Laboratory tests. The idea of ​​using medium infrared light

Lasers, viruses and bacteria. It looks like the title of a B-series sci-fi movie. effective against Sars-CoV2, but also the fearsome Legionella. The idea comes from an engineer, Francesco Zanata, who has now received what is called the scientific world concept teacher, proof of concept. “I have to say that in these years of emergency by Covid-19 I have often been called upon to validate technologies. And they often didn’t have a base. In the case of the prototype of the Kair Laser Zanata’s scientific foundation exists “, explains Giulio Cerullo, Professor of Physics at the Politecnico di Milano, President of the Division of Quantum and Optical Electronics of the European Society of Physics and organizer of the European Conference on Lasers. In short, an expert recognized.


“I came into contact with this technology,” adds Cerullo, “because I was asked to do an evaluation by Mario Negri’s Professor Giuseppe Remuzzi. Today we can say that, compared to the one with handles and solid bodies, one of the most effective ways to transmit viruses was to spread microparticles of water in the air by those who had contracted it.. When these particles are larger than 100 microns they are called gota and they are shot like bullets. When they are smaller, aerosols are even more dangerous because they stay in the environment for a long time.

The alternatives

There are also effective techniques, those of Hepa filters, which go back to World War II technologies, that of gas masks. They are found in many environments, but they have a problem: you often forget to change the filters. Another alternative is ultraviolet light, with a photochemical effect on viruses and bacteria, but its use is not so simple and often requires mercury, a pollutant and harmful to humans.

Medium infrared light

Zanata’s innovation is in the use of another light, that infrared average of the CO2 laser», At the base of the prototype just made by Kair Laser. As Andrea Morante, co-founder of the company with Zanata, adds, “we have already opened talks with VMD-Health in Great Britain and the German Ecolog Deutschland. We are at this stage what the British are calling brain on the table (the idea is on the table). But we have a prototype and engineer Zanata has patented the solution. ”


The peculiarity of the Kair laser is to suck pathogens inside a tube where the laser can destroy them. “No danger to humans: technology has been widely used in industry since the 1980s and is therefore safe,” says Cerullo. In addition, it leaves no residue and is therefore sustainable. Just because a laser uses CO2 doesn’t mean it produces it. The uses are many: interiors. But also in hospitals and operating rooms (it is estimated that by 2050 hospital bacteria will be the leading cause of death from antibiotic abuse). “In 2005,” explains Zanata, “with K-Laser, my historic company, I sold the world’s first most compact laser for surgical purposes and in 2014 the first blue laser in the dental field at Densply Sirona. We have a turnover of approximately 10 million and 30 thousand users of K-Laser products in the world ”. Now the biggest challenge: the anti-virus and bacteria with the technology that -according to the publication just made by the researchers of the Icgeb research center in Trieste on International Environment, (Elsevier group) – “with a minimum exposure of 15 milliseconds can inactivate 99% of aerosol pathogens.” The proof of the concept is there. We now need market testing.

May 11, 2022 (change May 11, 2022 | 23:02)

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