Results 21 to 30 of about 2,770,622 (284)

In a Different Light [PDF]

open access: yes, 2003
This module develops the understanding that visible light is composed of a spectrum of colors of light from red to violet, extends the concept of a spectrum to include non-visible light through discovery, and develops tools and strategies for student ...

core   +2 more sources

Visible light in photodermatology

open access: yesPhotochemical & Photobiological Sciences, 2020
Until recently, visible light (VL) had been regarded to be without significant photobiologic effect on the skin. Updated research suggests that this is not the case and the measurable effect of visible light on the skin is being documented in all skin types.
Shanthi, Narla   +3 more
openaire   +2 more sources

A high performance surface acoustic wave visible light sensor using novel materials: Bi2S3 nanobelts [PDF]

open access: yes, 2019
Low dimensional Bi2S3 materials are excellent for use in photodetectors with excellent stability and fast response time. In this work, we developed a visible light sensor with good performance based on surface acoustic wave (SAW) devices using Bi2S3 ...
Fu, Chen   +8 more
core   +5 more sources

Recent Developments in the Photochemical Synthesis of Functionalized Imidazopyridines

open access: yesMolecules, 2022
Imidazopyridines constitute one of the most important scaffolds in medicinal chemistry, as their skeleton could be found in a myriad of biologically active molecules.
Christine Tran, Abdallah Hamze
doaj   +1 more source

Visible Light Communications Illuminates the Future

open access: yesAdvances in Computing and Engineering, 2021
The use of Internet, video and audio calls at a very low cost is now common for all people around the world. This implies a tremendous carrying capacity for the carrier wave.
Moustafa Hussein
doaj   +1 more source

Visible‐Light‐Induced Dearomatizations

open access: yesEuropean Journal of Organic Chemistry, 2019
The dearomatization of aromatic compounds is an important synthetic strategy used in accessing complex three‐dimensional structures from simple aromatic precursors. This minireview aims to provide an overview of recent advancements in this area, with a specific focus on visible‐light‐mediated dearomative transformations.
Mikiko Okumura, David Sarlah
openaire   +4 more sources

Received-Signal-Strength (RSS) Based 3D Visible-Light-Positioning (VLP) System Using Kernel Ridge Regression Machine Learning Algorithm With Sigmoid Function Data Preprocessing Method

open access: yesIEEE Access, 2020
In this work, we propose and demonstrate a received-signal-strength (RSS) based visible-light-positioning (VLP) system using sigmoid function data preprocessing (SFDP) method; and apply it to two types of regression based machine learning algorithms ...
Yu-Chun Wu   +7 more
doaj   +1 more source

Visible light photonic integrated Brillouin laser

open access: yesNature Communications, 2021
In this work the authors demonstrate on-chip integration of Brillouin lasing operating at visible wavelengths, with engineered design for stable output.
Nitesh Chauhan   +10 more
doaj   +1 more source

Design for The Indoor Visible Light Communication Application System Based on LED Visible Light

open access: yesMATEC Web of Conferences, 2017
This paper designs an indoor visible light communication application system based on LED. The system can modulate the original signal one or more times, move to a specific frequency band, transmit on the power line, in the LED terminal use this module to
Lian Wenyu   +4 more
doaj   +1 more source

DRL-Based IRS-Assisted Secure Visible Light Communications

open access: yesIEEE Photonics Journal, 2022
In this paper, we develop a novel Physical Layer Security (PLS) technique for a Visible Light Communication (VLC) system composed of light fixtures assisted by mirror array sheets serving as Intelligent Reflecting Surfaces (IRS).
Danya A. Saifaldeen   +3 more
doaj   +1 more source

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