Results 21 to 30 of about 466 (242)

Mechanochemical Synthesis and Characterization of Nanostructured ErB4 and NdB4 Rare‐Earth Tetraborides

Advanced Engineering Materials, Volume 27, Issue 6, March 2025.
ErB4 and NdB4 nanostructured powders are produced by mechanochemical synthesis. 5 h mechanical alloying and 4 M HCl acid leaching are used in the production. ErB4 and NdB4 powders exhibit maximum magnetization of 0.4726 emu g−1 accompanied with an antiferromagnetic‐to‐paramagnetic phase transition at about TN = 18 K and 0.132 emu g−1 with a maximum at ...
Burçak Boztemur, Faruk Kaya, Bora Derin, Mustafa Lütfi Öveçoğlu, Ju Li, Duygu Ağaoğulları   +5 more
wiley   +1 more source

Spin‐Gapless Semiconductors

Small, 2020
AbstractThe spin‐gapless semiconductors (SGSs) are a new class of zero‐gap materials which have fully spin polarized electrons and holes. They bridge the zero‐gap materials and the half‐metals. The band structures of the SGSs can have two types of energy dispersion: Dirac linear dispersion and parabolic dispersion.
Zengji Yue, Zhi Li, Lina Sang, Xiaolin Wang   +3 more
openaire   +5 more sources

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Geopolítica de la guerra de semiconductores entre Estados Unidos y China: Rivalidad tecnológica y poder global

Revista de Ciencias Sociales
La industria de los semiconductores se ha convertido en un campo de batalla crítico en el panorama geopolítico del siglo XXI, sustentando desde la electrónica de consumo hasta los sistemas militares avanzados.
Anthony Rolando Medina Rivas Plata, Santiago Andrés Ullauri Betancourt   +1 more
doaj   +1 more source

Piezoresistive Monitoring of Carbon Nanomaterial‐Reinforced Epoxy Composites Under Cyclic and Fatigue Loading: A Review

Advanced Engineering Materials, EarlyView.
Carbon nanomaterial‐reinforced epoxy composites exhibit pronounced piezoresistive behavior, enabling intrinsic damage sensing under cyclic and fatigue loading. This review critically compares carbon nanotube and graphene systems, correlating filler content, percolation threshold, and gauge factor with sensing stability and damage evolution.
J. M. Parente, J. Nunes‐Pereira, A. P. Silva, P. N. B. Reis   +3 more
wiley   +1 more source

Formación de nanoestructuras orgánicas unidimensionales en superficies semiconductoras

Mundo Nano, 2015
Resumen: La formación de nanoestructuras orgánicas autoensambladas (que se forman por sí mismas) sobre superficies de los materiales semiconductores como el silicio es un área de investigación en nanotecnología muy activa e importante.
Noboru Takeuchi
doaj   +1 more source

Nanoindentation Criteria for Combinatorial Thin Film Libraries

Advanced Engineering Materials, EarlyView.
Thin‐film material libraries are compositional spreads used for screening composition‐structure‐property relationships. Nanoindentation is often used to characterize mechanical behavior across these systems, however variations in methodology are widespread.
Andre Bohn, Adie Alwen, Andrea M. Hodge
wiley   +1 more source

Descontaminación de agua utilizando nanomateriales y procesos fotocatalíticos

Mundo Nano, 2015
La efectiva eliminación de agentes contaminantes en el agua es un tema de prioridad en todo el mundo. Muchas de estas sustancias contaminantes son recalcitrantes en los sistemas convencionales de tratamiento de agua, por lo que un importante número de ...
Juan Carlos Durán-Álvarez, Edwin Avella, Rodolfo Zanella   +2 more
doaj   +1 more source

3D‐Printed Giant Magnetoresistive (GMR) Sensors Based on Self Compliant Springs

Advanced Engineering Materials, EarlyView.
This work explores 3D‐printed GMR sensors utilizing self‐compliant spring structures and conductive PLA composites. By optimizing arm width, we achieved high piezoresistive (0.34%/mm) and magnetoresistive (0.77%/mT) sensitivities. Demonstrated through Bluetooth‐integrated pressure and magnetic position sensing, these full printed low‐cost, customizable
Josu Fernández Maestu, Nelson Pereira, Javier Vicente, Carmen Rial Tubio, Senentxu Lanceros‐Méndez   +4 more
wiley   +1 more source

Estructura electrónica en aleación de AlP calculada con el método LMTO

Revista de Investigación de Física, 2018
La estructura electrónica y la energía total de la aleación cristalina de Aluminio-Fósforo (AlP) se estudia usando un potencial local de tipo LDA. Las bandas de energía y la densidad de estados DOS se calculan resolviendo la ecuación de Kohn-Sham para el
Cesar Cabrera
doaj   +1 more source