Results 51 to 60 of about 385,363 (284)

Duality-invariant extensions of Einstein-Maxwell theory

open access: yesJournal of High Energy Physics, 2021
We investigate higher-derivative extensions of Einstein-Maxwell theory that are invariant under electromagnetic duality rotations, allowing for non-minimal couplings between gravity and the gauge field. Working in a derivative expansion of the action, we
Pablo A. Cano, Ángel Murcia
doaj   +1 more source

The Orbital and Epicyclic Frequencies in Axially Symmetric and Stationary Spacetime

open access: yesUniverse, 2022
Motivated by observational evidence of the electromagnetic signal from the X-ray binary system known as quasi-periodic oscillations in the light curves of astrophysical black holes or neutron stars, we examined the general relativity and alternative ...
Bobur Turimov, Ozodbek Rahimov
doaj   +1 more source

On the Statistical Foundations of Kaluza's Magnetohydrodynamics

open access: yes, 2016
The introduction of electromagnetic fields into the Boltzmann equation following a 5D general relativistic approach is considered in order to establish the transport equations for dilute charged fluids in the presence of a weak electromagnetic field. The
Sagaceta-Mejia, A. R.   +1 more
core   +1 more source

A generalized electromagnetic theory for the mass spectrum of neutrinos [PDF]

open access: yesGravitation and Cosmology, 2014
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
de Oliveira, E. Capelas   +2 more
openaire   +2 more sources

Multiplex Modular Nanorobotic Systems with Catalytic Activity under Magnetic Navigation

open access: yesAdvanced Functional Materials, EarlyView.
We present modular nanorobots composed of a magnetic propulsion module and different extension modules carrying functional activities, assembled via DNA base pairing. The system integrates propulsion, optical tracking, enzymatic catalysis, and cell docking in a programmable manner.
Voichita Mihali   +7 more
wiley   +1 more source

Towards a Theory of Molecular Forces between Deformed Media

open access: yes, 2003
A macroscopic theory for the molecular or Casimir interaction of dielectric materials with arbitrarily shaped surfaces is developed. The interaction is generated by the quantum and thermal fluctuations of the electromagnetic field which depend on the ...
Balian   +58 more
core   +1 more source

Atomic Layer Deposition in Transistors and Monolithic 3D Integration

open access: yesAdvanced Functional Materials, EarlyView.
Transistors are fundamental building blocks of modern electronics. This review summarizes recent progress in atomic layer deposition (ALD) for the synthesis of two‐dimensional (2D) metal oxides and transition‐metal dichalcogenides (TMDCs), with particular emphasis on their enabling role in monolithic three‐dimensional (M3D) integration for next ...
Yue Liu   +5 more
wiley   +1 more source

First law of black holes in the gravitational electromagnetic system with magnetic charge

open access: yesPhysics Letters B
The quantum corrections in Einstein-Maxwell theory are typically described by introducing higher-curvature terms and non-minimally coupled electromagnetic fields.
Jie Jiang, Aofei Sang
doaj   +1 more source

First principles homogenization of periodic metamaterials and application to wire media

open access: yesComptes Rendus. Physique, 2020
Here, we present an overview of a first principles homogenization theory of periodic metamaterials. It is shown that in a rather general context it is possible to formally introduce effective parameters that describe the time evolution of macroscopic ...
Lannebère, Sylvain   +2 more
doaj   +1 more source

Magnetothermal‐Triggered Response and Self‐Healing of Recyclable and Reprocessable Nanocomposites for Actuation Systems

open access: yesAdvanced Functional Materials, EarlyView.
Developing recyclable materials for magnetic robotics that combine rapid response and self‐healing properties is challenging. Hence, this study focuses on the integration of magnetothermal nanoparticles into a dynamic sorbitol‐based vitrimer, a recyclable composite capable of remote actuation and self‐healing by magnetic heating.
Maria Weißpflog   +3 more
wiley   +1 more source

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