Results 101 to 110 of about 146,281 (291)

Relation of Continuous Chirality Measure to Spin and Orbital Polarization, and Chiroptical Properties in Solids

open access: yesAdvanced Optical Materials, EarlyView.
This work quantifies chirality through the continuous chirality measure (CCM). The CCM is correlated to a variety of properties: spin‐orbit field, orbital angular momentum, circular dichroism, absorption dissymmetry factor (gCD) and the circular photogalvanic effect.
Andrew Grieder, Shihao Tu, Yuan Ping
wiley   +1 more source

Deep learning for structure-preserving universal stable Koopman-inspired embeddings for nonlinear canonical Hamiltonian dynamics

open access: yesMachine Learning: Science and Technology
Discovering a suitable coordinate transformation for nonlinear systems enables the construction of simpler models, facilitating prediction, control, and optimization for complex nonlinear systems.
Pawan Goyal   +2 more
doaj   +1 more source

Modal Theory of Phase‐Modulated and Frequency‐Shifting Ring Cavities

open access: yesAdvanced Photonics Research, EarlyView.
We present a theoretical and experimental characterization of the optical modes of dispersionless ring cavities with phase modulators or frequency shifters. Their response to arbitrary modulation acts as a filter for phase‐modulated modes that determine the optical output of passive resonators and lasers. This provides a general framework for analyzing
Miguel Cuenca   +2 more
wiley   +1 more source

Distributed Energy Resources Integration in AC Grids: a Family of Passivity-Based Controllers

open access: yesRevista Iberoamericana de Automática e Informática Industrial RIAI, 2019
This paper presents the design and application of passivity–based control theory for distributed energy resources (DERs) integration through voltage source converters (VSC) in ac single–phase grids.
Oscar Danilo Montoya   +4 more
doaj   +1 more source

Excitation Energy Transfer between Porphyrin Dyes on a Clay Surface: A Study Employing Multifidelity Machine Learning

open access: yesAdvanced Theory and Simulations, EarlyView.
Inspired by natural light‐harvesting systems, this study computationally investigates a synthetic antenna by arranging cationic free‐base porphyrin molecules on an anionic clay surface. Using a multiscale quantum mechanics/molecular mechanics (QM/MM) approach combined with a multifidelity machine learning method, excitation energies are predicted ...
Dongyu Lyu   +7 more
wiley   +1 more source

Effect of Anion Hydrophobicity on the Oxidation of Ferrocene‐Terminated Monolayers

open access: yesAdvanced Theory and Simulations, EarlyView.
Self‐assembled monolayers terminated with ferrocene moieties can be oxidized using an applied potential. At the oxidized layer, anions from the electrolyte can form a layer. Experiments show a relationship between the hydrophobicity of the anion species and the redox potential.
Ludwig J.V. Ahrens‐Iwers   +2 more
wiley   +1 more source

First‐Principles Investigation of the T‐ and M‐Centers in Silicon Using Meta‐GGA Functionals

open access: yesAdvanced Theory and Simulations, EarlyView.
The relaxed structure for (a) T‐center and (b) M‐center. The calculations on the T‐center demonstrate excellent agreement with the HSE06, reinforcing the efficiency of meta‐GGA approaches for accurate defect characterization in Si. The M‐center is introduced, revealing promising quantum optical properties.
Petros‐Panagis Filippatos   +2 more
wiley   +1 more source

Phase‐Change Materials for Volatile Threshold Resistive Switching and Neuronal Device Applications

open access: yesAdvanced Science, EarlyView.
Volatile threshold switching materials are an important pathway to simulate neuronal behavior. This review summarizes recent advances in the development of volatile resistive switching devices and neuronal oscillators based on three representative phase change materials, emphasizes the major challenges in this rapidly evolving field, and provides an ...
Huandong Chen, Jayakanth Ravichandran
wiley   +1 more source

Engineering non-equilibrium quantum phase transitions via causally gapped Hamiltonians

open access: yesNew Journal of Physics, 2018
We introduce a phenomenological theory for many-body control of critical phenomena by engineering causally-induced gaps for quantum Hamiltonian systems. The core mechanisms are controlling information flow within and/or between clusters that are created ...
Masoud Mohseni   +2 more
doaj   +1 more source

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