Results 51 to 60 of about 71,844 (227)

Design and Applications of Multi‐Frequency Programmable Metamaterials for Adaptive Stealth

Advanced Functional Materials, EarlyView.
This article provides a comprehensive overview of metamaterials, including their fundamental principles, properties, synthesis techniques, and applications in stealth, as well as their challenges and future prospects. It covers topics that are more advanced than those typically discussed in existing review articles, while still being closely connected ...
Jonathan Tersur Orasugh, Ankita Mohanty, Amit Malakar, Suryasarathi Bose, Suprakas Sinha Ray   +4 more
wiley   +1 more source

A new curvature-like tensor in an almost contact Riemannian manifold

Pracì Mìžnarodnogo Geometričnogo Centru, 2016
In a M. Prvanović’s paper [5], we can find a new curvature-like tensor in an almost Hermitian manifold.In this paper, we define a new curvature-like tensor, named contact holomorphic Riemannian, briefly (CHR), curvature tensor in an almost ...
Koji Matsumoto
doaj   +1 more source

New supersymmetric AdS4 type II vacua

, 2009
Building on our recent results on dynamic SU(3)xSU(3) structures we present a set of sufficient conditions for supersymmetric AdS4xM6 backgrounds of type IIA/IIB supergravity.
B.E.W. Nilsson, C. Beasley, C. Beasley, C.P. Boyer, D. Gaiotto, D. Gaiotto, D. Lüst, D. Lüst, D. Martelli, D.P. Sorokin, Dieter Lüst, Dimitrios Tsimpis, J.P. Gauntlett, J.P. Gauntlett, M. Graña, M. Gualtieri, M. Petrini, P. Koerber, T. Friedrich   +18 more
core   +1 more source

Perovskite Microwires for Room Temperature Exciton‐Polariton Neural Network

Advanced Materials, EarlyView.
Exciton‐polaritons are explored as a novel platform for optical neuromorphic computing at room temperature using a monocrystalline perovskite waveguide. Demonstrating non‐equilibrium Bose‐Einstein condensation, this work achieves machine learning tasks such as classification and object detection, marking a key advance toward energy‐efficient, practical
Andrzej Opala, Krzysztof Tyszka, Mateusz Kędziora, Magdalena Furman, Amir Rahmani, Stanisław Świerczewski, Marek Ekielski, Anna Szerling, Michał Matuszewski, Barbara Piętka   +9 more
wiley   +1 more source

Triangle Anomalies from Einstein Manifolds

, 2006
The triangle anomalies in conformal field theory, which can be used to determine the central charge a, correspond to the Chern-Simons couplings of gauge fields in AdS under the gauge/gravity correspondence. We present a simple geometrical formula for the
Benvenuti, Sergio, Tachikawa, Yuji, Zayas, Leopoldo A. Pando   +2 more
core   +3 more sources

Mechanically Robust and Ion‐Conductive Polyampholyte Elastomers via Dimeric Ionic Bonding

Advanced Materials, EarlyView.
This study introduces a new class of polyampholyte ionic elastomers balancing both high mechanical strength and ionic conductivity by utilizing a novel precipitation method to create ionic dimers. The resulting elastomers exhibited strong mechanical performance and excellent ion mobility, making them ideal for applications in flexible electronics ...
Taebin Kim, Kyeong‐Seok Oh, SeJung Oh, Jong Gun Jung, Gwanho Kim, Woojoong Kim, Yeonji Kim, Jiwon Kim, Hyunseo Kang, Sang‐Young Lee, Cheolmin Park   +10 more
wiley   +1 more source

Some submersions of CR-hypersurfaces of Kaehler-Einstein manifold

International Journal of Mathematics and Mathematical Sciences, 2003
The Riemannian submersions of a CR-hypersurface M of a Kaehler-Einstein manifold M˜ are studied. If M is an extrinsic CR-hypersurface of M˜, then it is shown that the base space of the submersion is also a Kaehler-Einstein manifold.
Vittorio Mangione
doaj   +1 more source

Regge's Einstein-Hilbert Functional on the Double Tetrahedron [PDF]

, 2010
The double tetrahedron is the triangulation of the three-sphere gotten by gluing together two congruent tetrahedra along their boundaries. As a piecewise flat manifold, its geometry is determined by its six edge lengths, giving a notion of a metric on ...
Champion, Daniel, Glickenstein, David, Young, Andrea   +2 more
core  

Observation of Magnetic Pseudogap Behavior in Phosphorus‐Doped Silicon

Advanced Science, EarlyView.
Phosphorus‐doped silicon presents a promising platform for quantum computing and hosts a Kondo condensate state featuring a pseudogap. Thermodynamic and magnetic resonance measurements reveal that this pseudogap behavior involves critical spin fluctuations, suggesting that overlapping Kondo clouds form a correlated coherent magnetic ground state ...
Suheon Lee, Sangeun Cho, Yongcheol Jo, Wonjun Lee, Jae Min Kim, Hong Gu Lee, Yugo Oshima, Taku Matsushita, Hiroki Ikegami, Jonas A. Krieger, Christoper Baines, Thomas J. Hicken, Hubertus Luetkens, Eundeok Mun, Jungseek Hwang, Hyunsik Im, Kwang‐Yong Choi   +16 more
wiley   +1 more source

Ambient connections realising conformal Tractor holonomy

, 2006
For a conformal manifold we introduce the notion of an ambient connection, an affine connection on an ambient manifold of the conformal manifold, possibly with torsion, and with conditions relating it to the conformal structure.
A Čap, A Čap, C Fefferman, C Fefferman, E Cartan, Stuart Armstrong, T Leistner, Thomas Leistner, TN Bailey, TY Thomas, TY Thomas   +10 more
core   +3 more sources