Results 131 to 140 of about 965,238 (368)

Extending General Covariance: A Unified Framework for Electromagnetic Interactions and Geometric Unification

open access: yesAdvances in Mathematical Physics
This paper develops a geometrically symmetric framework that unifies gravity and electromagnetism by extending general covariance to incorporate electromagnetic interactions through an "electromagnetic tetrad." These tetrads, constructed from the ...
Xiulin Huang, Yan Xu
doaj   +1 more source

Acousto-electromagnetic Tomography

open access: yesSIAM Journal on Applied Mathematics, 2012
The aim of this paper is to develop a mathematical framework for acousto-electromagnetic tomography and to introduce an efficient reconstruction algorithm. In electromagnetic wave imaging, the resolution is limited by the Rayleigh criterion, that is, half the operating wavelength.
Ammari, H.   +3 more
openaire   +2 more sources

Reconfigurable Metamirrors Based on Compliant Mechanisms

open access: yesAdvanced Functional Materials, EarlyView.
Providing the basis for numerous practical applications, the reconfigurability of metadevices is of great importance. Through the integration of controlled mechanical deformation with chiral meta‐atoms, a compliant mechanism based metamirror is demonstrated for active control over the polarization of electromagnetic waves.
Galestan Mackertich‐Sengerdy   +3 more
wiley   +1 more source

Charge Form Factor and Sum Rules of Electromagnetic Response Functions inC12 [PDF]

open access: green, 2013
Alessandro Lovato   +6 more
openalex   +1 more source

Dispersive perfectly matched layers and high-order absorbing boundary conditions for electromagnetic quasinormal modes

open access: green, 2023
Guillaume Demésy   +6 more
openalex   +2 more sources

Golden‐Ratio–Guided Aperiodic Architected Metamaterials with Simultaneously Enhanced Strength and Toughness

open access: yesAdvanced Functional Materials, EarlyView.
Guided by the golden ratio, a class of aperiodic architected metamaterials is introduced to address the intrinsic trade‐off between strength and toughness. By unifying local geometric heterogeneity with global order, the golden‐ratio‐guided aperiodic architecture promotes spatial delocalization of damage tolerence regions, leading to more tortuous ...
Junjie Deng   +9 more
wiley   +1 more source

Seismic Isolation of Bridges Using the Principle of Electromagnetic Attraction and Repulsion

open access: yesRomanian Journal of Transport Infrastructure, 2017
This paper presents a new type of seismic isolator that uses the principle of electromagnetic attraction and repulsion, to control the friction force between two electromagnets during earthquakes.
Constantinescu Silviu Alexandru   +1 more
doaj   +1 more source

Exploiting Two‐Photon Lithography, Deposition, and Processing to Realize Complex 3D Magnetic Nanostructures

open access: yesAdvanced Functional Materials, EarlyView.
Two‐photon lithography (TPL) enables 3D magnetic nanostructures with unmatched freedom in geometry and material choice. Advances in voxel control, deposition, and functionalization open pathways to artificial spin ices, racetracks, microrobots, and a number of additional technological applications.
Joseph Askey   +5 more
wiley   +1 more source

Nanomaterial‐Integrated Fiber Neural Probes for Deep Brain Monitoring and Modulation: Challenges and Opportunities

open access: yesAdvanced Functional Materials, EarlyView.
The article presents nanomaterial‐integrated fiber neural probes as innovative tools for deep brain molecular sensing, neural stimulation, and temperature monitoring. It examines breakthroughs in SERS‐based biomolecule detection, thermoplasmonic activation, and luminescent thermometry, alongside strategies to overcome stability, specificity, and ...
Di Zheng   +5 more
wiley   +1 more source

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