Articles with "far uvc" as a keyword



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The abundance of the potential pathogen Staphylococcus hominis in the air microbiome in a dental clinic and its susceptibility to far‐UVC light

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Published in 2023 at "MicrobiologyOpen"

DOI: 10.1002/mbo3.1348

Abstract: The dental clinic air microbiome incorporates microbes from the oral cavity and upper respiratory tract (URT). This study aimed to establish a reliable methodology for air sampling in a dental clinic setting and quantify the… read more here.

Keywords: far uvc; hominis; staphylococcus; air ... See more keywords

Ceiling-mounted far-UVC fixtures reduce the surface bioburden in occupied clinical areas

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Published in 2025 at "Infection Control and Hospital Epidemiology"

DOI: 10.1017/ice.2025.62

Abstract: Abstract Contaminated surfaces in clinics pose a pathogen transmission risk. Far ultraviolet-C light (UVC), with a favorable safety profile for human exposure, has the potential for continuous pathogen inactivation in occupied clinical areas. This study… read more here.

Keywords: clinical areas; bioburden; mounted far; ceiling mounted ... See more keywords

Evaluation of Single-Pass Disinfection Performance of Far-UVC Light on Airborne Microorganisms in Duct Flows.

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Published in 2022 at "Environmental science & technology"

DOI: 10.1021/acs.est.2c04861

Abstract: Far-UVC irradiation (222 nm) is considered an emerging and sustainable solution for future infection and pandemic challenges. We examined the disinfection performance of a krypton-chloride lamp, with a quasi-monochromatic UVC peak at 222 nm, for… read more here.

Keywords: far uvc; duct; airborne microorganisms; disinfection ... See more keywords

Far-UVC 222 nm Treatment: Effects of Nitrate/Nitrite on Disinfection Byproduct Formation Potential

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Published in 2024 at "Environmental Science & Technology"

DOI: 10.1021/acs.est.4c04258

Abstract: Irradiation at far ultraviolet C (far-UVC) 222 nm by krypton chloride (KrCl*) excilamps can enhance microbial disinfection and micropollutant photolysis/oxidation. However, nitrate/nitrite, which absorbs strongly at 222 nm, may affect the formation of disinfection byproducts… read more here.

Keywords: nitrate nitrite; disinfection; uvc 222; far uvc ... See more keywords

Reactive Oxygen Species Generated in Situ During Carbamazepine Photodegradation at 222 nm Far-UVC: Unexpected Role of H2O Molecules.

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Published in 2024 at "Environmental science & technology"

DOI: 10.1021/acs.est.4c07256

Abstract: When 222 nm far-UVC is used to drive AOPs, photolysis emerges as a critical pathway for the degradation of numerous organic micropollutants (OMPs). However, the photodegradation mechanisms of the asymmetrically polarized OMPs at 222 nm… read more here.

Keywords: role; h2o molecules; cbz; far uvc ... See more keywords

Far-UVC micro-LED arrays for efficient light extraction and fiber coupling

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Published in 2025 at "Applied Physics Letters"

DOI: 10.1063/5.0285251

Abstract: The emission behavior of arrays of far-UVC micro-LEDs emitting at 234 nm has been studied and compared to large area LEDs. The use of the micro-LEDs enhanced the light extraction efficiency by a factor of 2.5… read more here.

Keywords: extraction; far uvc; fiber; micro led ... See more keywords

Origin of the efficiency drop in far-UVC LEDs emitting between 218 and 238 nm

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Published in 2025 at "Applied Physics Letters"

DOI: 10.1063/5.0296414

Abstract: The rapid drop in the external quantum efficiency (EQE) of light emitting diodes (LEDs) in the far-ultraviolet-C (far-UVC) spectral range with emission wavelengths between 218 and 238 nm toward shorter wavelengths has been investigated. AlGaN far-UVC… read more here.

Keywords: origin efficiency; efficiency; drop; 218 238 ... See more keywords

Chronic Far-UVC (222nm) Light Exposure of SKH-1 Hairless Mice Does Not Cause Detectable Eye Pathology or Visual Deficits

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Published in 2025 at "Current Eye Research"

DOI: 10.1080/02713683.2025.2524564

Abstract: Abstract Purpose Far-UVC light (200–235 nm) is a new antimicrobial technology proposed for use in occupied spaces. In contrast to conventional germicidal UV light (254 nm), theoretical considerations and emerging safety data suggest that the decreased penetration… read more here.

Keywords: mice; pathology; contrast sensitivity; far uvc ... See more keywords

Reducing specific contact resistivity of V/Al/Ti/Au n-electrode on n-AlGaN with Al content over 80% for far-UVC LEDs

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Published in 2025 at "Journal of Semiconductors"

DOI: 10.1088/1674-4926/25010026

Abstract: AlGaN-based LEDs with peak wavelength below 240 nm (far-UVC) pose no significant harm to human health, thus highlighting their broader application potential. While, there is a significant Schottky barrier between the n-electrode and Al-rich n-AlGaN,… read more here.

Keywords: contact resistivity; specific contact; far uvc; contact ... See more keywords

Efficacy of a Filtered Far-UVC Handheld Disinfection Device on Reducing Microbial Bioburden of Hospital Surfaces

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Published in 2022 at "American journal of infection control"

DOI: 10.1101/2022.11.07.22282040

Abstract: Objectives The Filtered Far UVC handheld disinfection device is a small portable device that emits far UVC at 222nm. The objective of this study was to evaluate the devices ability to kill microbial bioburden on… read more here.

Keywords: far uvc; microbial bioburden; device; hospital surfaces ... See more keywords

222 nm Far-UVC from filtered Krypton-Chloride excimer lamps does not cause eye irritation when deployed in a simulated office environment

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Published in 2022 at "Photochemistry and photobiology"

DOI: 10.1101/2022.11.26.22282779

Abstract: Far-UVC, in the form of filtered Krypton-Chloride lamps, is a promising technology for reducing airborne transmission of disease. Whilst significant research has been undertaken to investigate skin safety of these lamps, less work has been… read more here.

Keywords: far uvc; office environment; eye; simulated office ... See more keywords