Results 61 to 70 of about 198,572 (277)

Transparent, Sprayable Plastic Films for Luminescent Down‐Shifted‐Assisted Plant Growth

open access: yesAdvanced Materials Technologies, Volume 10, Issue 6, March 18, 2025.
Spreading the light: A modular approach to down‐shifting europium‐containing polyoxotitanium luminescent cages is developed, allowing their incorporation into sprayable plastic coatings on agricultural greenhouses for accelerated plant growth. Abstract The world's steadily growing population and global heating due to climate change are a threat to food
Rosa Müller   +17 more
wiley   +1 more source

Chaotic dynamics in a discrete-time predator-prey food chain [PDF]

open access: yesComputational Ecology and Software, 2015
In this paper, we consider a classical discrete-time food chain model describing predators-prey interaction. The Holling type I functional response is used as the uptake for both predators.
S. M. Sohel Rana
doaj  

Spatiotemporal communication with synchronized optical chaos

open access: yes, 2000
We propose a model system that allows communication of spatiotemporal information using an optical chaotic carrier waveform. The system is based on broad-area nonlinear optical ring cavities, which exhibit spatiotemporal chaos in a wide parameter range ...
A. Amengual   +32 more
core   +1 more source

Illuminating Advances in Materials: Optical Physical Unclonable Functions for Security Applications

open access: yesAdvanced Optical Materials, EarlyView.
This review highlights Optical Physical Unclonable Functions (OPUFs) as secure, light‐driven authentication tools. It surveys material platforms including optical fibers, low‐dimensional materials, luminophores, plasmonic nanoparticles and rare earth OPUFs systems.
Syeda Ramsha Ali   +4 more
wiley   +1 more source

STABILITY AND BIFURCATION OF PERIODIC MOTIONS OF THE PERMANENT MAGNET ROTOR SYSTEM WITH RUBBING

open access: yesJixie qiangdu, 2017
Established a two degrees of freedom model with discontinuous rigidity and damp for studying the response of the permanent magnet motor’s rotor and stator rubbing system,and there are abundant nonlinear dynamic behaviors when rubbing.the stability of ...
LAN HongWei
doaj  

Experimental Implementation of the Quantum Baker's Map

open access: yes, 2002
This paper reports on the experimental implementation of the quantum baker's map via a three bit nuclear magnetic resonance (NMR) quantum information processor. The experiments tested the sensitivity of the quantum chaotic map to perturbations.
A. Peres   +16 more
core   +1 more source

Chaos and hidden chaos in a 4D dynamical system using the fractal-fractional operators

open access: yesAIMS Mathematics
Although fractional calculus is about three centuries old, it has become the key to understanding many complex real-world phenomena. During the past few decades, many fractional derivatives have appeared. Among these, the fractal-fractional derivatives have shown acceptance in describing some real-world problems.
openaire   +2 more sources

Recent Advances in χ(2)‐Based Nonlinear Frequency Conversion of Fiber Lasers

open access: yesAdvanced Photonics Research, EarlyView.
Visible and mid‐infrared fiber lasers, enabled by nonlinear frequency conversion of fiber lasers, offer several advantages such as high efficiency, excellent wavelength tunability, high power, and superior beam quality that are highly desirable for practical applications. This study provides a comprehensive review of recent research progress in the χ(2)
Bing Han   +10 more
wiley   +1 more source

Period-doubling route to chaos in perturbed period-one nonlinear dynamics

open access: yesResults in Physics
An all-optical method is proposed for destabilizing the period-one (P1) nonlinear dynamic state using a system of three cascaded semiconductor lasers across two optical injection stages.
Mohammad AlMulla
doaj   +1 more source

Covert Binary Communications through the Application of Chaos Theory: Three Novel Approaches [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2008
Today, most covert communications systems use a spreadspectrum approach to ensure that transmissions remain clandestine. This paper expands beyond traditional spreadspectrum schemes and into chaos theory in communications by presenting a novel design for
Kyle J. Bradbury, Joseph P. Noonan
doaj  

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