바카라 후기‘Nanosecond 펄스 레이저를 사용한 즉각적인 소독

The ongoing COVID-19 pandemic has raised global concerns over our unpreparedness to contain highly contagious diseases. SARS-CoV-2, the virus responsible for COVID-19, can survive for multiple days on surfaces, and so can many other pathogens. Thus, we need to have at our disposal various technologies to disinfect surfaces in convenient and scalable ways.
Irradiation with ultraviolet-C (UVC) 바카라 후기 is a widespread approach to inactivate bacteria and viruses on inanimate surfaces; both doctors and hairdressers have been using such techniques to disinfect their tools for many decades. However, UVC 바카라 후기 is dangerous to us humans because our skin cells and certain proteins strongly absorb 바카라 후기 of that wavelength, increasing the risk of dermatitis and skin cancer. This glaring limitation calls for a safer method to inactivate pathogens.

Fortunately, a team of scientists from Nagoya City University (NCU), Japan, have recently developed a novel approach for surface disinfection, that relies on pulsed irradiation with harmless visible 바카라 후기 instead of UVC 바카라 후기. Their latest study—published online in Scientific Reports on 16th November 2021 ̶ was led by Professor Takahiro Matsumoto of the Graduate School of Design and Architecture and also included Senior Lecturer Ichiro Tatsuno and Professor Tadao Hasegawa of the Graduate School of Medical Sciences at NCU.
The team had previously shown that it is possible to inactivate certain bacteria infused with dye, using a low-power and easily available green pulsed laser. However, further experiments with a wavelength-tunable laser proved that the underlying optical inactivation mechanisms were more complex than they had earlier considered. To tackle this knowledge gap, they carried out a series of experiments and theoretical analyses to elucidate what exactly inactivates microorganisms irradiated by a 바카라 후기 pulsed laser, and how.

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Then, based on these results, the team proceeded to investigate how pulsed laser irradiation can be used to inactivate Escherichia coli (E. coli) bacteria. By modifying the wavelength of the pulsed laser, they observed a complex inactivation behavior that cannot be explained away by the simple absorption of 바카라 후기. In this case, scattering (which refers to phenomena involving the deviation of the path of 바카라 후기 waves as they encounter irregularities, like particulate matter, or radiation while passing through a medium) played a key role in defining how much the bacteria were affected by the irradiated 바카라 후기.
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Overall, the results presented in this study will pave the way to new techniques and devices for disinfecting surfaces without putting humans at risk. As Prof. Matsumoto concludes: “By using LED 바카라 후기ing technologies, it may be possible to integrate pulsed 바카라 후기 disinfection into indoor 바카라 후기ing. Such technology will help us manage new viral threats that are expected to emerge in the future.” Let us hope further developments in this field allow us to make 바카라 후기 work of pathogenic microorganisms!