Results 1 to 10 of about 241 (130)

Near-field-driven radiative thermal dynamics in aperiodic photonic nanostructures

open access: yesJPhys Photonics
Harnessing structural correlations in near-field plasmonic and polaritonic systems hold untapped potential for controlling light–matter interactions at the nanoscale. By tuning these correlations, one can reshape mode localization, coupling, and spectral
M Prado   +3 more
doaj   +1 more source

Quasicrystals and Other Aperiodic Structures in Mineralogy

open access: yesCrystals, 2016
In this article, we first present and discuss eighteenth-century descriptions of minerals that contributed decisively to the development of crystallography.
Carlos M. Pina, Victoria López-Acevedo
doaj   +1 more source

The influence of nonlinear resonance on human cortical oscillations

open access: yesCommunications Biology
Whether macroscale brain signals reflect linear or nonlinear organization remains poorly characterized. This distinction matters for modeling neural dynamics and interpreting oscillatory biomarkers of cognition and disease.
Ying Wang   +6 more
doaj   +1 more source

Dynamics of Periodic Waves in a Neural Field Model

open access: yesMathematics, 2020
Periodic traveling waves are observed in various brain activities, including visual, motor, language, sleep, and so on. There are several neural field models describing periodic waves assuming nonlocal interaction, and possibly, inhibition, time delay or
Nikolai Bessonov   +3 more
doaj   +1 more source

Optimized Multilayer Structures With Ultrabroadband Near-Perfect Absorption

open access: yesIEEE Photonics Journal, 2020
We present aperiodic multilayer structures with ultrabroadband near-perfect absorption in the visible and near-infrared wavelength range. We use a hybrid optimization algorithm coupled with the transfer-matrix method, to optimize both the material ...
Chenglong You   +4 more
doaj   +1 more source

Learning from feedback is independent from feedback visibility, but supported by aperiodic neural activity

open access: yesNeuroImage
Humans and other animals learn from feedback, by tending to repeat rewarded behavior and change behavior that receives negative feedback. Previous findings suggest that feedback does not need to be consciously perceived in order to be effective.
DanDan Liu   +4 more
doaj   +1 more source

Formation-Containment Control of Second-Order Multiagent Systems via Intermittent Communication

open access: yesComplexity, 2018
This paper investigates the formation-containment control of second-order multiagent systems with intermittent communication. Distributed coordination control algorithms are proposed under aperiodic intermittent communication, where each agent only ...
Mao-Dong Xia, Cheng-Lin Liu, Fei Liu
doaj   +1 more source

Blue and Orange Two-Color CW Laser Based on Single-Pass Second-Harmonic and Sum-Frequency Generation in MgO:PPLN

open access: yesApplied Sciences, 2018
We demonstrate a compact blue and orange-two color continuous wave laser source emitting at 487 nm and from 597.4 to 600.3 nm, respectively. The temperature tunable coherent orange radiation is achieved by frequency mixing 974 nm laser diode (LD) and a C-
Dismas K. Choge   +5 more
doaj   +1 more source

Homogeneous holographic viscoelastic models and quasicrystals

open access: yesPhysical Review Research, 2020
We show that the field theories dual to the homogeneous holographic models with spontaneously broken translations display several distinctive properties of quasicrystals, aperiodic crystals with long-range order (e.g., incommensurate charge density waves)
Matteo Baggioli
doaj   +1 more source

THE PROCESS OF GETTING STABLE SELF-EXCITED OSCILLATIONS IN SYSTEM OF LOW-VOLTAGE CIRCUITS OF REGULATION WITH ELECTRIC POTENTIAL OF LOCOMOTIVE VL8

open access: yesNauka ta progres transportu, 2011
The possibility of construction of a steady natural vibration system by introduction of successive correction link as an aperiodic link of the first-order is considered.
D. S. Bilukhin
doaj  

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