scholarly journals PD05: Skin safety and efficacy of filtered far ultraviolet C for SARS‐CoV‐2 inactivation

2021 ◽  
Vol 185 (S1) ◽  
pp. 87-87
Keyword(s):  
Safety And Efficacy ◽  
Ultraviolet C ◽  
Far Ultraviolet

scholarly journals Minimal, superficial DNA damage in human skin from filtered far‐ultraviolet‐C (UV‐C)

2021 ◽  
Author(s):  
R.P. Hickerson ◽  
M.J. Conneely ◽  
S.K. Hirata Tsutsumi ◽  
K. Wood ◽  
D.N. Jackson ◽  
...  
Keyword(s):  
Dna Damage ◽  
Human Skin ◽  
Ultraviolet C ◽  
Far Ultraviolet ◽  
Uv C

scholarly journals UVC LED and Conducting Yarn-Based Heater for a Smart Germicidal Face Mask to Protect against Airborne Viruses

Materials ◽  
2021 ◽  
Vol 14 (22) ◽  
pp. 6999
Author(s):  
Priyabrata Pattanaik ◽  
William Holderbaum ◽  
Asimananda Khandual ◽  
Hara Prasada Tripathy
Keyword(s):  
Face Mask ◽  
Prevention Measures ◽  
Irradiation Intensity ◽  
Moisture Management ◽  
Cad Simulation ◽  
Ultraviolet C ◽  
The Government ◽  
Far Ultraviolet ◽  
Airborne Viruses ◽  
Uv C

“Wear a mask. Save lives” is the slogan of WHO and all the government agencies over the world to the public. One of the most adopted prevention measures that can limit the spread of the airborne virus in the form of respiratory viral diseases, including the new strain of COVID-19, is wearing a proper mask. If the mask surface is heated to 65 to 70 °C, it could help potentially diminish any viruses or bacteria accumulated. The FAR-Ultraviolet -C (FAR-UV-C) dose for the influenza limit to 254 nm light is ~3 mJ/cm2/hour exposure is not harmful to the human skin and eyes. Here, we propose an intelligent mask served by FAR-UV-C and conducting a yarn-based heater that could potentially be activated in a controlled manner to kill the virus. The effective irradiation intensity for skin application would be under 0.1 µW/cm2. The exposure risk of UV-C is technically prevented by fabricating multi-layered fabrics with multiple functionalities. Along with experimental validation on bacterial filtration efficiency (BFE), tinker cad simulation for circuit design, and comsol multiphysics for temperature profile study, we probed Moisture Management Test (MMT) in addition with cytotoxicity risk by MTT Assay for survivability to ensure safer application potential. This novel proposed design with the germicidal combination of heating and FAR-UV-C models, described here, is promising in retaliating and combating any airborne viruses.

scholarly journals A new Far-UVC based method for germ free hospitals and travel: Initus-V

2021 ◽  
Author(s):  
Ayhan Olcay ◽  
Serdar Baki Albayrak ◽  
İbrahim Faruk Aktürk ◽  
Mehmet Cengiz Akbülbül ◽  
Onur Yolay ◽  
...  
Keyword(s):  
Direct Contact ◽  
Viral Diseases ◽  
Public Places ◽  
Germ Free ◽  
Ultraviolet C ◽  
Far Ultraviolet ◽  
Epidemic Diseases

AbstractDirect contact and airborne spread are main mechanisms of transmission for SARS-CoV-2, and virus can stay viable for at least 3 hours in aerosols. Initus-V system uses a Far-ultraviolet C (UVC) system, UVC resistant textile and googles to provide virus, bacteria and spore free environments in hospitals, crowded public places and travel environments. Initus-V system may help in prevention of epidemic diseases such as Coronavirus disease-19 (Covid-19), influenza, treatment of airborne viral diseases and spread of hospital-borne resistant infections.

scholarly journals Optimized Aluminum Reflector for Enhancement of UVC Cathodoluminescence Based-AlGaN Materials with Carbon Nanotube Field Emitters

Molecules ◽  
2021 ◽  
Vol 26 (13) ◽  
pp. 4025
Author(s):  
Manoj Kumar Chandra Mohan ◽  
Sang Kyun Shim ◽  
June Key Lee ◽  
Nakwon Jang ◽  
Naesung Lee ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Power Efficiency ◽  
Extraction Efficiency ◽  
Light Output ◽  
Light Extraction ◽  
Light Extraction Efficiency ◽  
Light Sources ◽  
Field Emitters ◽  
Ultraviolet C ◽  
Far Ultraviolet

The far ultraviolet C (UVC) light sources based on carbon nanotube (CNT) field emitters as excitation sources have become promising light sources for sterilization, disinfection, and water purification. However, the low light extraction efficiency of UVC–CNT light sources still hinders the practical application of these structures. Herein, we report an optimized aluminum (Al) reflector to enhance the light extraction efficiency of UVC–CNT light sources. Optical analysis of UVC-CNT light sources covered by the Al reflectors with various thicknesses ranging from 30 to 150 nm was performed to realize the optimized reflector. The UVC-CNT light sources exhibit the highest light extraction efficiency when the Al reflector layer has an optimized thickness of 100 nm. For comparison, the cathodoluminescence (CL) spectra were recorded for UVC–CNT light sources with and without the optimized Al reflector. The measured light output power and the estimated power efficiency of the UVC–CNT light-source-tube with Al reflector were enhanced by about 27 times over the reference. This enhancement is mainly attributed to the outstanding reflection effect of the Al reflector.

Nanopatterned sapphire substrate to enhance the efficiency of AlGaN-based UVC light source tube with CNT electron-beam

2020 ◽  
Vol 8 (48) ◽  
pp. 17336-17341
Author(s):  
Sang Kyun Shim ◽  
Wael Z. Tawfik ◽  
C. M. Manoj Kumar ◽  
Shangfeng Liu ◽  
Xinqiang Wang ◽  
...  
Keyword(s):  
Electron Beam ◽  
Light Source ◽  
Sapphire Substrate ◽  
Water Purification ◽  
Short Wavelength ◽  
Light Sources ◽  
Ultraviolet C ◽  
Far Ultraviolet

The short wavelength of far ultraviolet C (UVC) light sources is effective for various applications that include sterilizing bacteria and viruses, water purification, and sensing.

THE FAR ULTRAVIOLET (C–X) BANDS OF N2+

1956 ◽  
Vol 34 (3) ◽  
pp. 250-255 ◽  
Author(s):  
P. G. Wilkinson
Keyword(s):  
High Resolution ◽  
Intensity Distribution ◽  
Vacuum Ultraviolet ◽  
Rotational Analysis ◽  
Substantial Agreement ◽  
Rotational Constants ◽  
Ultraviolet C ◽  
Far Ultraviolet

Emission bands of the N2+ C–X system in the vacuum ultraviolet have been obtained under high resolution. The rotational analysis confirms the assignment as a [Formula: see text] transition and the rotational constants obtained are in substantial agreement with previous investigations. The unusual intensity distribution in the ν′ = 3 progression and perturbations in the ν′ = 0, 1, and 2 levels of the C state are in agreement with the theory of inverse predissociation in the ν′ = 3 level.

805: Safety and Efficacy of Gentamycin Bladder Irrigations in Complex Urologic Patients

2005 ◽  
Vol 173 (4S) ◽  
pp. 218-218
Author(s):  
William DeFoor ◽  
Denise Ferguson ◽  
Susan Mashni ◽  
Deborah Reeves ◽  
Lisa Creelman ◽  
...  
Keyword(s):  
Safety And Efficacy
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