On the nano-engineered III-nitride quantum-wells-based deep-UV light emitting diodes for COVID disinfection applications

Bhattarai, Trailokya; Raja, M. Yasin Akhtar; Ebong, Abasifreke; Bhutta, M. Khizar

doi:10.1117/12.2600576

Cited by 4 publications

(2 citation statements)

References 23 publications

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“…Thus, UV-C LEDs could be highly effective in controlling such viruses. UV-C LEDs of specific wavelengths and particular doses and a certain exposure duration could be highly effective in the sterilization of contaminated surfaces, leading to inactivation of the virus [200]. It has been observed that the UV-C light of wavelengths of 207 nm to 222 nm has been proven to be highly efficient in killing various microorganisms without causing a harmful effect on the skin [201].…”

Section: Application Of Uv Leds In Microbial Disinfection From Surfacesmentioning

confidence: 99%

A Review of Light-Emitting Diodes and Ultraviolet Light-Emitting Diodes and Their Applications

Bhattarai,

Ebong,

Raja

2024

Photonics

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This paper presents an extensive literature review on Light-Emitting Diode (LED) fundamentals and discusses the historical development of LEDs, focusing on the material selection, design employed, and modifications used in increasing the light output. It traces the evolutionary trajectory of the efficiency enhancement of ultraviolet (UV), blue, green, and red LEDs. It rigorously examines the diverse applications of LEDs, spanning from solid-state lighting to cutting-edge display technology, and their emerging role in microbial deactivation. A detailed overview of current trends and prospects in lighting and display technology is presented. Using the literature, this review offers valuable insights into the application of UV LEDs for microbial and potential viral disinfection. It conducts an in-depth exploration of the various microorganism responses to UV radiation based on the existing literature. Furthermore, the review investigates UV LED-based systems for water purification and surface disinfection. A prospective design for a solar-powered UV LED disinfection system is also delineated. The primary objective of this review article is to organize and synthesize pivotal information from the literature, offering a concise and focused overview of LED applications. From our review, we can conclude that the efficiency of LEDs has continuously increased since its invention and researchers are searching for methods to increase efficiency further. The demand for LED lighting and display applications is continuously increasing. Our analysis reveals an exciting horizon in microbial disinfection, where the integration of UV LED systems with cutting-edge technologies such as sensors, solar power, Internet-of-Things (IoT) devices, and artificial intelligence algorithms promises high levels of precision and efficacy in disinfection practices. This contribution sets the stage for future research endeavors in the domain of viral disinfection using solar-powered UV LED modules for universal applications.

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Section: Application Of Uv Leds In Microbial Disinfection From Surfacesmentioning

confidence: 99%

A Review of Light-Emitting Diodes and Ultraviolet Light-Emitting Diodes and Their Applications

Bhattarai,

Ebong,

Raja

2024

Photonics

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“…Such interaction of light is applied in different fields of science and technology. The interaction of UV light having proper irradiance, wavelength and exposure time with microbes DNA/RNA could effectively destroy the structure of the nucleic acids and can deactivate the pathogens [10]. In this work, phenomenon of absorption of light of wavelength ranging from 400 nm to 1000 nm is studied.…”

Section: Theorymentioning

confidence: 99%

Application of Absorption Spectra to Study Order of Sequence in Intersecting Printed and Pen Strokes

Giri¹,

Chimouriya²,

Ghimire³

2022

J. Nep. Phys. Soc.

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This work is performed to establish chronological order in crossing strokes between printed stroke and pen strokes. Nine different types of pens including cello maxriter pen (black and blue), pilot pen (red and black), cello pointec pen (black and blue) and cello techno tip pen (red, black and blue) are used to produce pen strokes and for printed stroke Canon LBP 3300 printer is used. In the case of printed stroke, only black color stroke is applied. As a result, samples of both homogeneous and heterogeneous intersecting strokes are prepared. This work is based on the assumption that nature and peak characteristics of absorption spectra from crossing stroke should be similar to that of second stroke. Here, absorption spectra is generated by Video Spectral Comparator-6000 by using light of wavelength ranging from 400 nm to 1000 nm. From this experiment, it is found to be possible to find chronological order for heterogeneous crossing strokes (crossing stroke of different colors) only if printed stroke is over pen stroke. It means, only if print is done over writing strokes from red and blue pen, then order of sequence of writing can be determined whereas in other cases it is not possible.

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Advancements in 275 nm UV-LED Technology for Deactivation of Bacteriophages, Phi6 and MS2

Bhattarai,

Ebong,

Raja

et al. 2023

2023 IEEE 20th International Conference on Smart Communities: Improving Quality of Life Using AI, Robotics and IoT (HONET)

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On the nano-engineered III-nitride quantum-wells-based deep-UV light emitting diodes for COVID disinfection applications

Cited by 4 publications

References 23 publications

A Review of Light-Emitting Diodes and Ultraviolet Light-Emitting Diodes and Their Applications

A Review of Light-Emitting Diodes and Ultraviolet Light-Emitting Diodes and Their Applications

Application of Absorption Spectra to Study Order of Sequence in Intersecting Printed and Pen Strokes

Advancements in 275 nm UV-LED Technology for Deactivation of Bacteriophages, Phi6 and MS2

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