Results 81 to 90 of about 5,240 (289)

Correction: Conformal Vector Fields and Null Hypersurfaces

open access: yesResults in Mathematics
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Cyriaque Atindogbé, Benjamín Olea
openaire   +2 more sources

Self‐Assembled Inorganic Nanomembrane Tubes: Rolled‐Up Piezoelectrics for Microacoustic Wave‐Based Actuators and Sensors

open access: yesAdvanced Materials, EarlyView.
This study demonstrates a self‐assembly process to generate free‐standing piezoelectric nanomembranes, forming ultracompact microtubular acoustic wave sensors and actuators. The miniaturized 3D piezoelectric platform reported in this work can be applied in telecommunication, energy harvesting, and acoustofluidics. Moreover, the 3D self‐assembly can add
Raphaël C. L‐M. Doineau   +9 more
wiley   +1 more source

The isoperimetric problem in the Riemannian manifold admitting a non-trivial conformal vector field

open access: yes, 2023
In this article, we will study the isoperimetric problem by introducing a mean curvature type flow in the Riemannian manifold endowed with a non-trivial conformal vector field.
Jiayu, Li, Shujing, Pan
core   +1 more source

The supercurrent and Einstein equations in the superconformal formulation

open access: yesJournal of High Energy Physics, 2017
We give a new expression for the supercurrent and its conservation in curved N $$ \mathcal{N} $$ =1, D = 4 superspace using the superconformal approach. The first component of the superfield, whose lowest component is the vector auxiliary field gives the
Sergio Ferrara   +3 more
doaj   +1 more source

On Conformal Vector Fields Parallel to The Observer Field

open access: yes, 2008
We review a theorem by Hasse and Perlick establishing a result characterizing parallax-free cosmological models via three equivalent properties -- namely the existence of a redshift potential, the existence of a conformal vector field parallel to the observer field, and the vanishing of the shear of the observer field together with some integrability ...
Dirmeier, Alexander   +2 more
openaire   +2 more sources

Flexible Dielectric Acoustic Resonator Patch for Tissue Regeneration

open access: yesAdvanced Materials, EarlyView.
A flexible dielectric acoustic resonator patch enables MHz‐range ultrasound generation through resonance amplification without using piezoelectric materials. Conformal integration on a curved substrate allows efficient acoustic delivery to tissue‐mimicking environments.
Donyoung Kang   +7 more
wiley   +1 more source

Vector bundles on Riemann surfaces and Conformal Field Theory

open access: yes, 2008
The main character of these lectures is a finite-dimensional vector space, the space of generalized (or non-Abelian) theta functions, which has recently appeared in (at least) three different domains: Conformal Field Theory (CFT ...
Arnaud Beauville
core  

Screening vector field modifications of general relativity

open access: yes, 2013
A screening mechanism for conformal vector-tensor modifications of general relativity is proposed. The conformal factor depends on the norm of the vector field and makes the field to vanish in high dense regions, whereas drives it to a non-null value in ...
Mota, David F.   +2 more
core   +1 more source

Self‐Assembled Monolayers in p–i–n Perovskite Solar Cells: Molecular Design, Interfacial Engineering, and Machine Learning–Accelerated Material Discovery

open access: yesAdvanced Materials, EarlyView.
This review highlights the role of self‐assembled monolayers (SAMs) in perovskite solar cells, covering molecular engineering, multifunctional interface regulation, machine learning (ML) accelerated discovery, advanced device architectures, and pathways toward scalable fabrication and commercialization for high‐efficiency and stable single‐junction and
Asmat Ullah, Ying Luo, Stefaan De Wolf
wiley   +1 more source

Note on stochastic Löwner evolutions and logarithmic conformal field theory

open access: yes, 2004
It is discussed how stochastic evolutions may be linked to logarithmic conformal field theory. This introduces an extension of the stochastic Löwner evolutions.
Rasmussen, J.
core   +1 more source

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