Results 221 to 230 of about 12,111,779 (277)

Regulating electronic coupling and molecular vibration to facilitate exciton transfer of fused ring electron acceptors enables 20.66% efficiency of organic solar cells

open access: yesInfoMat, EarlyView.
Introducing L8‐F efficiently reinforces electronic coupling and suppresses molecular vibration for L8‐BO:L8‐F to afford ultra‐fast exciton transfer rate and thus prolonged exciton diffusion length. Therefore, D18:L8‐BO:L8‐F based organic solar cells (OSCs) acquire more efficient exciton dissociation and weaker charge carrier recombination to achieve an
Yufan Zhu   +13 more
wiley   +1 more source

Micellar and Solubilization Properties of Biological Surfactant Surfactin

open access: yesJournal of Surfactants and Detergents, EarlyView.
ABSTRACT We studied aqueous solutions of surfactin in the concentration range of 0.001–200 g/L using NMR diffusometry, tensometry and optical microscopy methods. According to tensometry data, the system forms monolayers of surfactant molecules at the water‐air phase boundary at C = 0.02 g/L.
Victor P. Arkhipov   +3 more
wiley   +1 more source

Ambient‐Light‐Activated Rewritable Optical Patterning in Transparent Long‐Afterglow Garnet Ceramics

open access: yesLaser &Photonics Reviews, EarlyView.
This work demonstrates sunlight‐activated rewritable optical information storage in transparent long‐afterglow Y3Al2Ga3O12:Ce (YAGG:Ce) garnet ceramics fabricated via solid‐state sintering with tetraethyl orthosilicate (TEOS) as a sintering aid. By integrating ambient‐light operability, reversibility, and high optical clarity in a robust ceramic host ...
Luyang Hua   +11 more
wiley   +1 more source

Room‐Temperature Polariton Condensation Into Superscar Modes in Growth‐Defined Triangular Micro‐Prism Resonators

open access: yesLaser &Photonics Reviews, EarlyView.
High‐Q superscar modes in growth‐defined triangular GaN micro‐prism resonators enable strong exciton–photon coupling and room‐temperature polariton condensation, offering a scalable platform for integrated III‐nitride polariton devices. ABSTRACT Group III‐nitride semiconductors are regarded as key materials for realizing polariton devices operating at ...
Chan‐Young Sung   +4 more
wiley   +1 more source

Toward Low‐Power Laser Refrigeration ‐ Cooling a Resonant WGM Crystalline Cavity

open access: yesLaser &Photonics Reviews, EarlyView.
Laser refrigeration offers a method to cool solids to low temperatures by using only light. By illuminating bulk crystals doped with rare‐earth ions one can engineer the emitted fluorescent light to be at shorter wavelengths than the pump light ‐ thus extracting heat/phonons from the solid and cooling the crystals.
Jinjin Du   +6 more
wiley   +1 more source

Experimental Study on Polymer–Polymer Interfacial Thermal Resistance

open access: yesMacromolecular Theory and Simulations, Volume 34, Issue 2, March 2025.
Interfacial thermal resistance (ITR) in polymer–polymer interfaces is experimentally measured in this paper by the multi‐layered bulk sample approach. Based on numerical simulation and experimental verification, new techniques of layer‐overlapping samples are developed.
Yinfeng Xia   +2 more
wiley   +1 more source

Creep Mechanism Mapping of Lamellar Ti–Al Alloys With Crystal‐Plasticity Phase‐Field and Interpretable Machine Learning Framework

open access: yesMaterials Genome Engineering Advances, EarlyView.
Crystal‐plasticity phase‐field simulations combined with stacked machine learning map the creep microstructure relationship in lamellar Ti‐Al alloys. Interpretable learning identifies lamellar thickness, elastic strain energy, and interfacial energy as dominant factors governing the diffusion‐to‐dislocation creep transition and overall creep resistance.
Zan Zhang   +4 more
wiley   +1 more source

Thermodynamics and Entropy Loss in Nanoconfined Chain Polymerization

open access: yesJournal of Polymer Science, EarlyView.
The difference in the entropy change on propagation in nanoconfined and bulk free‐radical polymerizations is 1–2 orders of magnitude larger than the conformational entropy lost in confined SAW simulations. The experimental confinement entropy is also super‐extensive in chain length scaling, suggesting that the difference between experiments and ...
Qian Tian   +5 more
wiley   +1 more source
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The Mathematical Structure of the Lattices of the Lattice Boltzmann Method

Journal of Computational Science, 2016
Abstract It was shown previously (Shan, 2010) that the lattice weights of the lattice Boltzmann method are the solutions to an optimization problem subjecting to a set of linear equality and inequality constraints. Here, a solution strategy is developed and complete solutions for such optimization problem are obtained in one-, two-, and three ...
Xiaowen Shan
exaly   +2 more sources

Lattices for the lattice Boltzmann method

Physical Review E, 2009
A recently introduced theory of higher-order lattice Boltzmann models [Chikatamarla and Karlin, Phys. Rev. Lett. 97, 190601 (2006)] is elaborated in detail. A general theory of the construction of lattice Boltzmann models as an approximation to the Boltzmann equation is presented.
Chikatamarla, S.S., Karlin, I.V.
openaire   +4 more sources

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