Results 51 to 60 of about 3,500 (265)

Atom Probe Tomography as an Emerging Tool for Understanding Defect‑Driven Mechanisms in HfO2‑Based Ferroelectrics

open access: yesAdvanced Functional Materials, EarlyView.
This Perspective highlights atom probe tomography as a powerful tool for understanding the atomic‐scale defect chemistry in HfO2‐based ferroelectrics. 3D mapping of dopants, point defects, and interface chemistry can provide new insight into defect‐driven mechanisms underpinning the ferroelectricity in the system and guide the design of more reliable ...
Kasper Hunnestad   +3 more
wiley   +1 more source

Coordinated Architectural and Chemical Reinforcement in the Crushing Mandible of a Soldier Termite

open access: yesAdvanced Functional Materials, EarlyView.
The crushing mandible of a soldier termite withstands substantial biting loads despite lacking mineral. Its cuticle is partitioned: convex teeth pair hardness and zinc enrichment with aligned chitin fibers for contact durability, while stiffer concave regions between teeth carry bending loads.
Andrew Tran Nguyen   +16 more
wiley   +1 more source

AVANCES DEL PROYECTO: MAPA GEOQUÍMICA DE SEDIMENTOS ACTIVOS FINOS DEL DEPARTAMENTO DE ANTIOQUIA

open access: yesBoletín de Ciencias de la Tierra, 2007
Para la elaboración del Mapa Geoquímica de Sedimentos Activos Finos del Departamento de Antioquia, se diseño un sistema de bloques de 30 km x 20 km, donde se tomaron muestras sobre los drenajes más representativos y se prepararon compósitos para análisis
LUIS HERNÁN SÁNCHEZ A.   +2 more
doaj  

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

Programming Nanoscale Reaction Environments via Peptide Localization for Gold Nanoparticle Growth in Liposomal Nanoreactors

open access: yesAdvanced Functional Materials, EarlyView.
The liposome nanoreactor method enables uniform metal nanoparticle synthesis using the interior as a reaction environment. We demonstrate that peptide sequences and lipid compositions act as a functional molecular switch to control reaction environments in liposome nanoreactors.
Yuya Abe   +6 more
wiley   +1 more source

Experimental and Theoretical Study of the Thermal Shock Behavior of Insulating Refractory Materials

open access: yesCeramics
This study investigates the thermal shock behavior of three Al2O3-SiO2 commercial insulating refractory materials (JM23, JM26, and JM28) used in high-temperature industries (>1000 °C). Thermal shock resistance was evaluated through experimental tests and
Anabella Mocciaro   +4 more
doaj   +1 more source

Geología de la cordillera Central y el occidente colombiano y petroquímica de los intrusivos granitoides mesocenozoicos

open access: yesBoletín Geológico, 1983
En este trabajo se considera la geología de las siguientes unidades morfoestructurales de Colombia: la cordillera Central, la cordillera Occidental, la Serranía de Baudó y las Depresiones interandinas del Cauca - Patía y Atrato - San Juan - Tumaco.
Alberto Jairo Álvarez
doaj   +1 more source

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

open access: yesAdvanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li   +9 more
wiley   +1 more source

La materialidad en la cerámica contemporánea. Las obras de Casanovas, Pérez y Serra

open access: yesBoletín de Arte, 2014
A fin de mostrar el concepto de materialidad en la cerámica contemporánea, el presente trabajo analiza un conjunto de obras de diversos artistas españoles donde la materialidad se manifiesta mediante la apropiación de los conocimientos tecnológicos en la
Florencia Serra   +3 more
doaj  

Prospección geoquímica y génesis del mercurio en el flanco occidental de la cordillera Central de Colombia: municipios de Aránzazu, Salamina y Pacora, departamento de Caldas

open access: yesBoletín Geológico, 1984
El flanco occidental de la cordillera Central de Colombia, en el sector comprendido entre los municipios de Aránzazu, Salamina y Pácora en el departamento de Caldas, se realizó un programa de prospección geoquímica y geología que se cumplió en tres ...
Hernando Lozano Q.   +2 more
doaj   +1 more source

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