Results 21 to 30 of about 4,942,780 (260)

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

Simultaneous transmission of audio and video signals using visible light communications [PDF]

open access: yes, 2013
A visible light communication system for parallel transmission of high-quality audio and video signals using illumination white and red light-emitting diodes (LEDs) is presented in this paper. For video transmission, we adopts the pulse width modulation (
Son, Do   +13 more
core   +2 more sources

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

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-Driven BiOI-Based Janus Micromotor in Pure Water

open access: yes, 2017
Light-driven synthetic micro-/nanomotors have attracted considerable attention due to their potential applications and unique performances such as remote motion control and adjustable velocity.
Yefei Wu (3701548)   +6 more
core   +1 more source

PWM-based PPM format for dimming control in visible light communication system [PDF]

open access: yes, 2012
We report simulation results of pulse width modulation (PWM)-based pulse position modulation (PPM) signal format for visible light communication systems. For simultaneous operation of data transmission and dimming control, PPM data format is added to PWM
Jang, Hyung-Joon   +7 more
core   +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

Visible Light Communications

open access: yes, 2016
Visible light communications (VLC) use the visible spectrum (wavelengths of 390-750 nm or frequency band of 400-790 THz) and provide wireless communication using omnipresent light-emitting diodes (LEDs).
Sarbazi, E.   +10 more
core   +1 more source

Ultrasensitive bionic photonic-electronic skin with wide red-shift mechanochromic response

open access: yesLight: Advanced Manufacturing
Mimicking animal skin is an effective strategy for enhancing the performance of artificial skin. Inspired by a chameleon’s iridophore and a spider’s slit organ, a novel photonic-electronic skin (PE-skin) with excellent optical/electrical dual-sensing ...
Tianqi Wang   +11 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

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