Results 41 to 50 of about 1,087,326 (199)

Plasmon‐Enhanced Second‐Harmonic Generation in Atomically Thin Crystalline Silver Nanostructures

open access: yesAdvanced Materials, EarlyView.
Atomically thin crystalline silver films combine vertical quantum confinement with lateral plasmonic field enhancement to boost second‐harmonic generation. Nanoribbon and nanotriangle arrays enable geometry‐tunable infrared plasmon resonances, producing strong SHG from deeply subwavelength metallic volumes compatible with silicon‐based nanophotonics ...
Saad Abdullah   +10 more
wiley   +1 more source

Dissipative solitons signature in achiral Néel magnetic domain walls driven by spin-orbit torque

open access: yesCommunications Physics
Magnetic domain walls offer a compelling platform for investigating non-linear spatio-temporal phenomena due to their rich internal dynamics under external stimuli. Here, we investigate the dynamics of achiral Néel domain walls (DWs) driven by spin-orbit
Mouad Fattouhi   +6 more
doaj   +1 more source

Electrochemical Analysis on Compounds of the Vitamin B6 Family Using Glassy Carbon Electrodes

open access: yesInternational Journal of Electrochemical Science, 2012
The electrochemical reduction of vitamin B6 group and related compounds has been performed at pH neutral using glassy carbon electrodes. Irreversible bi- or tetra-electronic processes controlled by diffusion on the top of the wave are observed for these ...
J. Gonzalez-Rodriguez   +3 more
doaj   +1 more source

DIGRESSÕES ACERCA DA CIÊNCIA APLICADA DO MOVIMENTO HUMANO (OU SOBRE COMO PODEM PROSPERAR REVOLUÇÕES SIMBÓLICAS NA ÁREA DE EDUCAÇÃO FÍSICA?)

open access: yes, 2019
A partir da localizacao do debate epistemologico da Educacao Fisica brasileira frente aos impetos de desenvolvimento mais marcantes dessa agenda em escala internacional, irei, de um ponto de vista metacientifico, reunir argumentos em favor da ideia de ...
J. D. de Souza
semanticscholar   +1 more source

La mancata assegnazione di un premio Nobel : Il caso della fisica dei raggi cosmici italiana

open access: yes, 2015
L'analisi dei documenti dell'Archivio Nobel con più di cinquant'anni ci permette di prendere in esame alcuni casi rilevanti di ricerche importanti nella fisica dei raggi cosmici condotte da scienziati italiani ai quali non fu assegnato il Premio Nobel ...
L. Gariboldi
core   +1 more source

Thermodynamics of Concomitant Charge‐Transfer, Antiferromagnetic, and Isostructural Phase Transitions in Barocaloric ACu3Fe4O12 Quadruple Perovskites

open access: yesAdvanced Science, EarlyView.
A copper‐iron charge transfer instability drives concomitant electronic, magnetic, and isostructural phase transitions in ACu3Fe4O12${\rm ACu}_3{\rm Fe}_4{\rm O}_{12}$, with an inverse barocaloric effect. A minimal Landau theory ties these thermodynamic signatures together, revealing a pressure‐independent transition entropy with comparable charge and ...
Jefferson Delgado‐Quesada   +1 more
wiley   +1 more source

Self-assembly of active amphiphilic Janus particles

open access: yesNew Journal of Physics, 2017
In this article, we study the phenomenology of a two dimensional dilute suspension of active amphiphilic Janus particles. We analyze how the morphology of the aggregates emerging from their self-assembly depends on the strength and the direction of the ...
S A Mallory   +3 more
doaj   +1 more source

Heme-binding enables allosteric modulation in an ancient TIM-barrel glycosidase

open access: yesNature Communications, 2021
Family 1 glycosidases (GH1) are present in the three domains of life and share classical TIM-barrel fold. Structural and biochemical analyses of a resurrected ancestral GH1 enzyme reveal heme binding, not known in its modern descendants.
Gloria Gamiz-Arco   +13 more
doaj   +1 more source

One century of teaching, research, and innovation in chemical engineering in Mexico: The role of chemical engineering in the background and future of polymer science and industrial production in Mexico

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Timeline of key academic milestones and individuals that shaped chemical engineering at FQ‐UNAM and in Mexico. Abstract One hundred years after the beginning of the teaching of Chemical Engineering in Mexico, which started in 1925 in the former National School of Chemical Sciences, currently Faculty of Chemistry (FQ) at National Autonomous University ...
Patricia Pérez‐Salinas   +2 more
wiley   +1 more source

Epitaxial growth of non-polar a-plane ZnO and aluminium-doped ZnO on r-sapphire using the intermittent spray pyrolysis methodology

open access: yesApplied Surface Science Advances
In this article, we highlight the epitaxial growth of non-polar a-plane ZnO and aluminium-doped ZnO using the low-cost, non-vacuum and highly up-scalable intermittent spray pyrolysis technique.
Cerine Treesa Russel   +2 more
doaj   +1 more source

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