Results 41 to 50 of about 4,280,236 (294)

Novos materiais com ferro, com alta condutividade iónica de oxigénio [PDF]

, 2006
Doutoramento em Ciência e Engenharia de MateriaisPretende-se com este trabalho avaliar o potencial de novos materiais para aplicações de alta temperatura, nomeadamente membranas para separação de oxigénio e oxidação parcial de hidrocarbonetos, e pilhas ...
Shaula, Aliaksandr
core  

Nanoconfinement‐Induced Second‐Harmonic Circular Dichroism via Chirality–Ferroelectric Coupling

Advanced Functional Materials, EarlyView.
Nanoconfinement of a ferroelectric nematic liquid crystal within a chiral nanoporous sponge yields an enhanced second‐harmonic generation circular dichroism (|gSHG–CD| ≈ 1.1). Polarization‐resolved analysis suggests an additional magnetic‐dipole‐associated nonlinear contribution under nanoconfinement, highlighting chirality–ferroelectric coupling as a ...
Jae‐Jin Lee, Hiroya Nishikawa, Tae‐Woong Moon, Dong‐Ha Kim, Fumito Araoka, Suk‐Won Choi   +5 more
wiley   +1 more source

High temperature elastic anisotropy of the perovskite and post-perovskite polymorphs of Al2O3 [PDF]

, 2005
Finite temperature ab initio molecular dynamics calculations were performed to determine the high temperature elastic and seismic properties of the perovskite and post-perovskite phases of pure end-member Al2O3.
Price, GD, Brodholt, JP, Stackhouse, S
core  

Fabrication of continuous ultrathin ferroelectric films by chemical solution deposition methods [PDF]

, 2008
The integration of ferroelectrics in nanodevices requires firstly the preparation of high-quality ultrathin films. Chemical solution deposition is considered a rapid and cost-effective technique for preparing high-quality oxide films, but one that has
Fernandez, R., Ramos, P., Ricotea, J., Holgado, S., Calzada, M. L., Huang, Zhaorong   +5 more
core   +1 more source

Designing Vanadium‐Based Oxide Electrocatalysts for Water Splitting: Experimental and Mechanistic Insights with Machine Learning

Advanced Functional Materials, EarlyView.
This review establishes structure‐property‐mechanism relationships across six modification strategies for V‐based oxide water‐splitting electrocatalysts: lattice engineering, heteroatom doping, interface engineering, carbon‐based hybridization, morphology engineering, and surface reconstruction and pre‐catalyst design, where dissolution is reframed as ...
Youness El Issmaeli, Amina Lahrichi, Hoje Chun, Rafael Gómez‐Bombarelli, Bruno G. Pollet   +4 more
wiley   +1 more source

Phase relations in the Eu2O3-Fe2O3 system at 1300 and 1400 °C [PDF]

Processing and Application of Ceramics
Phase relations in the Eu2O3-Fe2O3 system at 1300 and 1400°C were studied in the whole concentration range by X-ray diffraction and scanning electron microscopy. The samples were prepared with a concentration step of 1 to 5mol%.
Chudinovych Olga V., Samelyuk Anatoliy V., Korichev Serhiy F., Flis Victor S.   +3 more
doaj   +1 more source

Structure and dielectric properties of solid solutions Bi7Ti4+xWxNb1−2x−0.1V0.1O21 (x=0.1−0.4) [PDF]

Journal of Advanced Dielectrics, 2020
The structural and electrophysical characteristics of a number of solid solutions of layered oxides of the perovskite-type Bi7Ti4+xWxNb1−2x−0.1V0.1O21 (x=0.1−0.4) are studied.
S. V. Zubkov
doaj   +1 more source

CaSiO3 perovskite at lower mantle pressures [PDF]

, 2005
We investigate by first-principles the structural behavior of CaSiO3 perovskite up to lower mantle pressures. We confirm that the cubic perovskite modification is unstable at all pressures.
Price, GD, Wentzcovitch, R, Caracas, R, Brodholt, J   +3 more
core  

Architecture‐Driven Functional Coupling in Vertically Aligned Nanocomposites

Advanced Functional Materials, EarlyView.
Vertically aligned nanocomposites define a growth‐engineered architecture in which vertical interfaces, strain fields, defect pathways, and phase connectivity are created simultaneously. This review shows how these architectural features couple ferroic, optical, ionic, electrochemical, and device responses, establishing design rules and open challenges
Md Shatil Islam‐Shanto, Javier Zamudio‐García, Abraham Sánchez‐Caballero, David Marrero‐López, Vincenzo Esposito   +4 more
wiley   +1 more source

From Bulk to Colloidal Nanocrystals: Top‐Down Synthesis of Highly Luminescent Cs2ZrCl6:Te4+ Double Perovskite Nanocrystals for X‐Ray Imaging

Advanced Functional Materials, EarlyView.
Top‐down ultrasonication produces highly emissive Cs2ZrCl6:Te4+ nanocrystals (NCs) with a PLQY of 65%, which is higher compared to that of the NCs synthesized by typical bottom‐up hot‐injection synthesis. The colloidal Cs2ZrCl6:Te4+ NCs have been found to be potential candidates for x‐ray scintillation imaging.
Yang Liu, Ye Wu, Hongpeng Liu, Cong Cui, Iago López‐Fernández, Nadesh Fiuza‐Maneiro, Sergio Gómez‐Graña, Yingjun Chai, Zhicheng Wang, Yusheng Wu, Laishi Li, Xiaoming Li, Lakshminarayana Polavarapu   +12 more
wiley   +1 more source