Results 121 to 130 of about 850,111 (281)

[Camiones de refugiados cruzando la frontera]

open access: yes, 1939
Alcance y contenido: Instantánea de una hilera de camiones cargados de refugiados españoles ocupando las carreteras que les conducen a territorio francés huyendo de la guerraTítulo basado en el contenido de la fotografía y el texto mecanografiado al ...
Anónimo, S.XX, Planet News
core  

Ferroionic Electrostatic Landscapes Enabling Wireless Energy Harvesting, Storage, and Sensing

open access: yesAdvanced Electronic Materials, EarlyView.
By integrating experiments and electrostatic field simulations, we show that long‐range wireless coupling in Li‐based ferroionics devices emerges from the cooperative interaction between ionic migration and electronic polarization. This coupling sustains self‐polarized electrostatic fields across centimeter‐scale air gaps without external bias or ...
M. Helena Braga   +7 more
wiley   +1 more source

Observational tests of 4D double field theory

open access: yesEuropean Physical Journal C: Particles and Fields
Although General Relativity (GR) is a very successful theory of gravity, it cannot explain every observational phenomenon. People have tried many kinds of modified gravity theory to explain these phenomena which GR cannot explain very well, such as ...
Shunrui Li, Yang Liu
doaj   +1 more source

[Barricadas en Madrid]

open access: yes, 1936
Alcance y contenido: Instantánea que muestra a varios civiles armados protegidos tras una barricada construida con sacos en las calles de Madrid, frente al Cuartel de la montañaTítulo basado en el contenido de la fotografía y el texto mecanografiado al ...
Anónimo, S.XX, Planet News
core  

SPICE‐Compatible Compact Modeling of Cuprate‐Based Memristors Across a Wide Temperature Range

open access: yesAdvanced Electronic Materials, EarlyView.
A physics‐guided compact model for YBCO memristors is introduced, incorporating carrier trapping, field‐induced detrapping, and a differential balance equation to describe their switching dynamics. The model is compared with experiments and implemented in LTspice, allowing realistic circuit‐level simulations.
Thomas Günkel   +6 more
wiley   +1 more source

3D MXene Aerogel Frameworks With In Situ‐Grown BiFeO3 for Synergistically Enhanced Thermoelectric Performance

open access: yesAdvanced Electronic Materials, EarlyView.
A lightweight, 3D MXene aerogel framework integrated with bismuth ferrite was developed to efficiently harvest waste heat. By growing the oxide directly onto the porous aerogel, the composite achieves strong interfacial connections. This unique architecture simultaneously boosts electrical power generation and blocks heat flow, resulting in an ...
Oju Kwon   +4 more
wiley   +1 more source

[Campo de concentración] : [Prat de Mollo]

open access: yes, 1939
Alcance y contenido: Instantánea de cientos de refugiados españoles hacinados en el patio del campo de concentración de Prat de Mollo tras huir de España.
Anónimo, S.XX, Planet News
core  

Electrically Tuning Electromagnetic Wave Shielding in Phase Engineered 1T/2H‐MoS2‐Based Devices

open access: yesAdvanced Electronic Materials, EarlyView.
Sub‐millimeter‐thick phase‐engineered 1T/2H‐MoS2 structures enable electrically tunable electromagnetic interference shielding through active modulation of microwave absorption and reflection. The coexistence of metallic and semiconducting phases, combined with a PVA/KOH gel electrolyte, provides dynamic control over charge transport and interfacial ...
Mustafa Akyol   +3 more
wiley   +1 more source

High‐Detectivity InGaAs/GaAsP Superlattice PIN Photodetector with a Thin Absorber on GaAs substrate for 1100 nm Applications

open access: yesAdvanced Electronic Materials, EarlyView.
A high‐performance strain‐compensated InGaAs/GaAsP superlattice SWIR photodetector was successfully grown by MOCVD on a scalable 100 mm GaAs platform. Combining excellent structural quality with strong optoelectronic performance, the device delivers a low dark current density of 2.3 × 10−7 A/cm2 and a detectivity of 1.9 × 1011 Jones at 1100 nm ...
Rémy Tribout   +19 more
wiley   +1 more source

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