Results 51 to 60 of about 112,408 (233)

On actions for (entangling) surfaces and DCFTs

, 2018
The dynamics of surfaces and interfaces describe many physical systems, including fluid membranes, entanglement entropy and the coupling of defects to quantum field theories.
Armas, Jay, Tarrio, Javier
core   +1 more source

Nano‐Patterned CuO Nanowire Nanogap Hydrogen Gas Sensor with Voids

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
Sub‐5‐ppb hydrogen (H2) detection and sub‐10‐s response and recovery times are achieved based on nano‐patterned polycrystalline CuO nanowires nanogap gas sensors with voids using electron‐beam lithography and unique annealing processes. Pre‐H2 annealing, void‐generating oxidation, and downscaled nanogap electrodes are key to improving the sensing ...
Muqing Zhao, Ryosuke Nitta, Seiichiro Izawa, Jun‐ichi Yamaura, Yutaka Majima   +4 more
wiley   +1 more source

$SL(2,R)$ symmetry and quasi-normal modes in the BTZ black hole

, 2011
With the help of two new intrinsic tensor fields associated with the $SL(2,R)$ quadratic Casimir of Killing fields, we uncover the $SL(2,R)$ symmetry satisfied by the solutions to the equations of motion for various fields in the BTZ black hole in a ...
A Castro, B Chen, B Chen, D Anninos, D Birmingham, GT Horowitz, Hongbao Zhang, I Sachs, JM Maldacena, M Guica, RM Wald, V Balasubramanian, Y Choquet-Bruhat   +12 more
core   +1 more source

Ultrahigh Piezoelectricity in Truss‐Based Ferroelectric Ceramics Metamaterials

Advanced Functional Materials, Volume 35, Issue 12, March 18, 2025.
By leveraging the unique combination of polarization direction and loading state, ultrahigh piezoelectricity is achieved through careful tuning of the relative density and scaling ratio in truss‐based ferroelectric metamaterials. This approach enables the simultaneous realization of extremely high piezoelectric constants and ultralow dielectric ...
Jiahao Shi, Kang Ju, Haoyu Chen, Valérie Orsat, Agus P. Sasmito, Ali Ahmadi, Abdolhamid Akbarzadeh   +6 more
wiley   +1 more source

Wearable Haptic Feedback Interfaces for Augmenting Human Touch

Advanced Functional Materials, EarlyView.
The wearable haptic feedback interfaces enhance user experience in gaming, social media, biomedical instrumentation, and robotics by generating tactile sensations. This review discusses and categorizes current haptic feedback interfaces into force, thermal, and electrotactile stimulation‐based haptic feedback interfaces, elucidating their current ...
Shubham Patel, Zhoulyu Rao, Maggie Yang, Cunjiang Yu   +3 more
wiley   +1 more source

Thermodynamic Geometry and Topological Einstein-Yang-Mills Black Holes

, 2011
From the perspective of the statistical fluctuation theory, we explore the role of the thermodynamic geometries and vacuum (in)stability properties for the topological Einstein-Yang-Mills black holes.
Bhupendra Nath Tiwari, Hubeny, Okuyama, Stefano Bellucci, Tiwari, Tiwari, Tiwari, Winstanley, Wu   +8 more
core   +3 more sources

Single Pair of Weyl Points Evolve From Spin Group‐Protected Nodal Line in Half‐Metallic Ferromagnet V3S4

Advanced Functional Materials, EarlyView.
A spin group (SG)‐based mechanism is proposed to realize a single pair of Weyl points. PT‐symmetric nodal lines (NLs) persist under T‐breaking, protected by the combination of SG and P symmetry. When considering spin‐orbit coupling, the SG‐protected NL will split into Weyl points, which will also induce anomalous transport phenomena arising from ...
Shifeng Qian, Yao Zhang, Xiaowei Sheng, Xiuxian Yang, Gang Zhang, Junfeng Gao, Xiaotian Wang   +6 more
wiley   +1 more source

Intersecting hypersurfaces, topological densities and Lovelock Gravity

, 2007
Intersecting hypersurfaces in classical Lovelock gravity are studied exploiting the description of the Lovelock Lagrangian as a sum of dimensionally continued Euler densities. We wish to present an interesting geometrical approach to the problem.
Aragone, Bañados, Boulware, Callan, Charmousis, Chern, Choquet-Bruhat, Coleman, Davis, Deruelle, Deser, Deser, Eguchi, Elias Gravanis, Fursaev, Gabrielov, Garfinkle, Gelfand, Geroch, Gibbons, Gravanis, Gravanis, Gravanis, Guo, Guth, Hawking, Hawking, Israel, Jacobson, Lee, Lovelock, Metsaev, Myers, Myers, Myers, Navarro, Steven Willison, Teitelboim, Wheeler, Wiltshire, Wiltshire, York, Zanelli, Zumino, Zwiebach   +44 more
core   +4 more sources

Ultrafast Room‐Temperature Nanofabrication via Ozone‐Based Gas‐Phase Metal‐Assisted Chemical Etching for High‐Performance Silicon Photodetectors

Advanced Functional Materials, EarlyView.
Ozone‐based gas‐phase metal‐assisted chemical etching enables unprecedented room‐temperature fabrication of high‐quality silicon nanowires. The superior oxidation potential of O3 drives rapid vertical etching (1 µm min−1) while maintaining exceptional structural integrity. The pristine nanowire surfaces enable high‐performance core‐shell photodetectors
Hyein Cho, Yejin Han, Geonhwi Kim, Jihwan Jeong, Seongmin Lee, Yebin Ahn, Sang Beom Hong, Soohyeok Park, Inkyeong Park, So Eun Jang, Duck Hyun Youn, Han‐Don Um   +11 more
wiley   +1 more source

Newton Method on Riemannian Manifolds: Covariant Alpha-Theory

, 2003
In this paper we study quantitative aspects of Newton method for finding zeros of mappings f: M_n -> R^n and vector fields X: M_x ...
Dedieu, Jean-Pierre, Malajovich, Gregorio, Priouret, Pierre   +2 more
core   +2 more sources