Research.
Our Research.
Groundbreaking technologies begin as exceptional research.
Lit Thinking™ is enabling world-leading semiconductor research in collaboration with academic and industrial partners. Currently, UVC LED’s are not efficient at wavelengths below 230nm, which is required for skin safe Far-UVC. Our goal is to develop commercially viable semiconductors that will enable Far-UVC emission.
Our work will change the world.
Our work will change the world.
Resources on
Far-UVC and Air Cleaning.
Ultraviolet Light
History and Review
Public Health Reports / January, 2010
The History of Ultraviolet Germicidal Irradiation for Air Disinfection
“There is a long history of investigations concluding that, if used properly, UVGI can be safe and highly effective in disinfecting the air, thereby preventing transmission of a variety of airborne infections. … This article reviews that history of UVGI for air disinfection, starting with its biological basis, moving to its application in the real world, and ending with its current status.”
International Ultraviolet / May, 2020
Far-UVC Current Knowledge Summary From the Leading, Independent Experts
"The significance of Far UVC is that, whereas exposure to conventional germicidal UV (250-280 nm) at germicidal doses is potentially hazardous, biophysical and experimental evidence suggest this is not the case for Far UV-C..."
A Background to
Mechanical Air Quality
US EPA / January 2023
Recommended Air Flow and Exchange for Minimum Quality Air (EPA)
"ASHRAE recommends that homes receive 0.35 air changes per hour but not less than 15 cubic feet of air per minute (cfm) per person. as the minimum ventilation rates in residential buildings in order to provide IAQ that is acceptable to human occupants and that minimizes adverse health effects."
US CDC / July, 2019
Number of Mechanical Air Changes per Hour to Reduce Airborne Pathogens (CDC)
"Number of air changes may be reduced when the room is unoccupied if provisions are made to ensure that the number of air changes indicated is reestablished any time the space is being utilized."
Far-UVC
Effectiveness on Pathogens
Nature Scientific Reports / June, 2020
Far-UVC Efficiently and Safely Inactivates Airborne Human Coronaviruses
"We previously demonstrated that 222-nm far-UVC light efficiently kills airborne influenza virus and we extend those studies to explore far-UVC efficacy against airborne human coronaviruses alpha HCoV-229E and beta HCoV-OC43."
Journal of Hospital Infections / February, 2021
Far-UVC Against Influenza
"The 222-nm UVC is able to inactivate a wide spectrum of microbial pathogens. In comparison with the conventional 254-nm UVC, the germicidal effect of 222-nm UVC to the fungal hyphae and spores is low, but the 222-nm UVC exhibits strong germicidal effect to the bacterial endospores."
American Journal of Infection Control / November, 2022
Far-UVC Against E. coli
"The present study clearly showed a bactericidal effect of far-UVC on ESBL-producing E. coli. We believe that irradiation with far-UVC may be potentially effective in preventing infection by ESBL-producing E. coli in health care settings."
Public Library of Science One / February, 2018
Far-UVC Against MRSA
"Being safe for patient and hospital staff, our results suggested that far-UVC light (222 nm) might be a convenient approach to prevent transmission of drug-resistant infectious agents in the clinical setting."
Far-UVC
Skin-Safety
Photochemistry and Photobiology / January, 2023
Study Demonstrates No Skin Damage After Long Term Use of Far-UVC
“The findings from this study support the long-term safety of long-term chronic exposure to far-UVC radiation, and therefore its potential suitability as a practical anti-microbial approach to reduce airborne viral and bacterial loads in occupied indoor settings.”
GMS Hygiene and Infection Control / February, 2021
The Impact of Far-UVC Radiation on Pathogens, Cells, Skins, and Eyes - A Collection
“Far-UVC – especially at a wavelength of 222 nm – is very effective against all pathogens…this is not a short-term solution for the current pandemic, but may be suitable for future technological approaches for decontamination in rooms in the presence of people or for antisepsis.”
Far-UVC
Real-World Applications
Advances in Space Research / January, 2021
NASA Reducing Bioburden in Spacecrafts with Far-UVC Light
"The major advantage of far-UVC (222 nm) compared to traditional germicidal UVC (254 nm) is the potential for application throughout the spacecraft assembly process in the presence of humans without adverse health effects due to the limited penetration of far-UVC light into biological materials."
Nature Scientific Reports / March, 2022
Whole Room Air Cleaning for High Bioburden Spaces
"For the first time, we show that Far-UVC deployed in a room-sized chamber effectively inactivates aerosolised Staphylococcus aureus. At a room ventilation rate of 3 air-changes-per-hour (ACH), with 5 filtered-sources the steady-state pathogen load was reduced by 98.4% providing an additional 184 equivalent air changes (eACH). "
Nature Scientific Reports / January, 2023
An Excimer Lamp to Provide Far-UVC Irradiation for Dining-Table Disinfection
“By varying the lamp irradiance output, the number and positions of the lamps, the far-UVC irradiation can achieve a 3-log reduction for a dining duration of 5 min. Besides, the far-UVC lamp has a low damage risk to diners when achieving an effective inactivation rate.“
Chemical Engineering Journal / January, 2023
A New Method of Pasteurization for Food: UV Radiation for Food Safety
"The application of ultraviolet (UV) light in the food industry has held great promise for a long time. UVC light (200–280 nm) possesses excellent germicidal properties to inactivate a wide range of microbial pathogens (e.g., bacteria, fungi, yeasts, molds, and viruses)."
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