Results 131 to 140 of about 2,277,393 (310)

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

Gapless Superconductivity From Extremely Dilute Magnetic Disorder in 2H‐NbSe2‐xSx

open access: yesAdvanced Materials, EarlyView.
We demonstrate that 2H‐NbSe2‐xSx hosts gapless superconductivity at unexpectedly low magnetic impurity concentrations. Combining STM, Bogoliubovde Gennes simulations, DFT, and quasiparticle interference, we comprehensively study the development of gapless behavior and show that SeS substitution reshapes the band structure, enhances nesting, and drives ...
Jose Antonio Moreno   +16 more
wiley   +1 more source

Conferencia. Perspectivas de investigación en seguridad alimentaria

open access: yesPerspectivas en Nutrición Humana, 2002
E concepto de seguridad alimentaria ha evolucionado a partir de la Conferencia Mundial sobre la alimentación de 1974 desde un enfoque basado en la disponibilidad de alimentos hasta las definiciones actuales que abarcan la suficiencia, estabilidad y ...
Santa Jiménez
doaj  

Investigaciones Paralelas

open access: yesOncología, 2006
Es deber de los que hacemos diagnóstico en el campo de de la medicina moderna, recordar los cambios transcendentales e históricos en las ciencias biológicas y en la medicina en articular, que nos han permitido tener en la actualidad las herramientas necesarias para poder, primero comprender los fenómenos naturales biológicos y aplicar sus resultados ...
openaire   +1 more source

Hydrogelation via Supramolecular Copolymerization of Structural Water within Adaptive Metal–Organic Fibers

open access: yesAdvanced Materials, EarlyView.
Structural water is harnessed as an active co‐monomer to drive supramolecular polymerization in bulk water. Zinc(II) Salphen complexes confine water molecules to form hollow, metal–organic nanofibers that assemble into adaptive hydrogels with thermoresponsive mechanics and selective chiral recognition.
Merlin R. Stühler   +10 more
wiley   +1 more source

Beyond Earth: Resilience of Quasi‐2D Perovskite Solar Cells in Space

open access: yesAdvanced Materials, EarlyView.
In the article (DOI: 10.1002/adma.202520433), Christoph Putz and co‐workers demonstrate rigid quasi‐2D perovskite solar cells operating in low Earth orbit, delivering stable power for more than 100 days under real‐space conditions. In‐orbit performance is correlated with extensive ground‐based thermal and proton‐irradiation studies on rigid and ...
Christoph Putz   +17 more
wiley   +1 more source

Investigaciones sobre la esclavitud negra y la abolición en América Latina.

open access: yesRevista de Historia, 2001
Introducción Hace diez años presentamos un informe sobre el estado de la investigación sobre la esclavitud en América latina en la Latin American Reserach Review.
Magnus Mörner
doaj  

Signatures of Edge States in Antiferromagnetic Van der Waals Josephson Junctions

open access: yesAdvanced Materials, EarlyView.
ABSTRACT The combination of superconductivity and magnetic textures leads to unconventional superconducting phenomena, including new correlated and topological phases. Van der Waals (vdW) materials emerge as a versatile platform for exploring the interplay between these two competing orders.
Celia González‐Sánchez   +10 more
wiley   +1 more source

Newspapers in Santiago de Cuba in the nineteenth century: reflections about its heritage significance

open access: yesSantiago, 2017
In the Dictionary of Cuban Literature a lot of newspapers that circulated mainly in Havana, during the colonial period is recorded; and very few other places in the country.
Virginia B. Suárez-Piña   +1 more
doaj  

n‐Type Polymer Radio Frequency Rectifiers Operating at 18.5 GHz

open access: yesAdvanced Materials, EarlyView.
Combining an n‐doped polymer semiconductor with wafer‐scale asymmetric planar electrodes featuring work function‐engineered contacts yields radio‐frequency diodes and rectifying circuits operating at up to 18.5 GHz. The devices combine scalable manufacturing with an operating frequency previously unattainable by large‐area organic electronics ...
Lazaros Panagiotidis   +19 more
wiley   +1 more source

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