Results 71 to 80 of about 72,568 (267)

Reconfigurable, Temperature Resilient Phase‐Change Metasurfaces Fabricated via High Throughput Nanoimprinting Lithography

Advanced Science, EarlyView.
ABSTRACT The combination of metasurfaces with chalcogenide phase‐change materials is a highly promising route toward the development of multifunctional and reconfigurable nanophotonic devices. However, their transition into real‐world devices is hindered by several technological challenges. This includes, amongst others, the lack of large area photonic
Carlota de Ruiz de Galarreta, Yinghao Zhao, Jose Mendoza‐Carreño, José M. Caicedo, José Santiso, C. David Wright, M. Isabel Alonso, Jiafang Li, Agustin Mihi   +8 more
wiley   +1 more source

A Lorentz-equivariant transformer for all of the LHC

SciPost Physics
We show that the Lorentz-Equivariant Geometric Algebra Transformer (L-GATr) yields state-of-the-art performance for a wide range of machine learning tasks at the Large Hadron Collider.
Johann Brehmer, Víctor Bresó, Pim de Haan, Tilman Plehn, Huilin Qu, Jonas Spinner, Jesse Thaler
doaj   +1 more source

Current‐Driven Nonreciprocal Response of Nonequilibrium Skyrmions

Advanced Science, EarlyView.
A skyrmion holds great promise for spintronic applications owing to its intrinsic topological stability and high mobility under ultra‐low current excitation. Here, by means of in situ electron microscopy, we demonstrate a skyrmion diode effect and the associated current‐driven nonreciprocal skyrmion dynamics in a designed FeGe‐based microdevice.
Xiuzhen Yu, Soju Furuta, Xichao Zhang, Yi‐Ling Chiew, Kiyomi Nakajima, Kosuke Karube, Naoya Kanazawa, Yasujiro Taguchi, Yoshinori Tokura, Masahito Mochizuki, Fumitaka Kagawa   +10 more
wiley   +1 more source

Quantum work for deriving and explaining the Lorentz transformations [PDF]

AIP Advances
The Lorentz transformations of mass and time are derived and explained within the framework of quantum-process thermodynamics. To this end, various notions of quantum work are employed to describe the behavior of an accelerated particle, such as an ...
Grit Kalies, Duong D. Do, Cornelia Breitkopf   +2 more
doaj   +1 more source

Unified Field Theory From Enlarged Transformation Group. The Covariant Derivative for Conservative Coordinate Transformations and Local Frame Transformations

, 2009
Pandres has developed a theory in which the geometrical structure of a real four-dimensional space-time is expressed by a real orthonormal tetrad, and the group of diffeomorphisms is replaced by a larger group called the conservation group.
A.O. Barut, C.J.S. Clarke, D. Pandres Jr., D. Pandres Jr., E.L. Green, Edward Lee Green, F.W. Hehl, L.H. Ryder, P.A.M. Dirac, S. Weinberg, T.W.B. Kibble, W.L. Bade   +11 more
core   +1 more source

Controlled Moderate Interfacial Reaction Facilitates High‐Strength Low‐Resistivity Barrier Layer for Half‐Heusler Thermoelectrics

Advanced Science, EarlyView.
The barrier layer is designed comprehensively by thermal expansion coefficient and interfacial reaction energy to yield a controlled interfacial reaction. Ultimately, the Co25Fe50Ni25/half‐Heusler joint simultaneously achieves low contact resistivity and high bonding strength.
Jian Liang, Shuyue Tan, Lifeng Jiang, Wen Zhang, Hongda Song, Xinghui Wang, Haiping Guo, Huijun Kang, Rongchun Chen, Enyu Guo, Zongning Chen, Tongmin Wang   +11 more
wiley   +1 more source

Helical Electron Beam Micro‐Bunching by High‐Order Modes in a Micro‐Plasma Waveguide

Advanced Science, EarlyView.
ABSTRACT Electron acceleration by a high‐power Laguerre‐Gaussian pulse in a micro‐plasma waveguide is investigated. When the incident laser travels in the waveguide, electrons on the wall are extracted into the vacuum core and accelerated by the longitudinal field of the waveguide mode.
Xingju Guo, Longqing Yi
wiley   +1 more source

A Quantum Anomaly For Rigid Particles

, 1992
Canonical quantisation of rigid particles is considered paying special attention to the restriction on phase space due to causal propagation.
Alvarez-Gaumé, Arodz, Battle, Braaten, Dereli, Dhar, Duff, Fiorentini, Gauntlett, Govaerts, Grunberg, Huq, Isberg, Isham, Iso, Iso, Jan Govaerts, Kleinert, Kuznetsov, Nesterenko, Nesterenko, Nesterenko, Pavšič, Pavšič, Pisarski, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Plyushchay, Polyakov, Polyakov, Zoller   +40 more
core   +1 more source

A Flexible Metamaterial Absorber via Loss Engineering for Large‐Area Ultra‐Broadband Infrared Extinction

Advanced Science, EarlyView.
Designed and demonstrated a flexible metamaterial absorber via loss engineering for large‐area ultra‐broadband infrared extinction, providing a new method for miniaturization of absorbers and flexible optical devices. ABSTRACT The advancement of compact and wearable optical systems is critically limited by the lack of high‐performance, integrable ...
Zhe Wu, Zhongzhu Liang, Xiaoyan Shi, Fuming Yang, Enzhu Hou, Jihui Jiang, Xintong Wei, Siyu Guo, Bing Sun, Qingxin Tang, David R. Smith, Haiyang Xu   +11 more
wiley   +1 more source

Coupled Vacancy and Phonon‐Scattering Engineering Drive Defect Evolution Toward Multifunctional High‐Performance Bi2Te3 Thermoelectrics

Advanced Science, EarlyView.
ZnSb reduces carrier concentration and suppresses Te volatilization, while Se substitution within QLs softens phonons and enhances anharmonicity. Swapped bilayers near twin boundaries strengthen phonon scattering and interlayer bonding. As a result, the optimal sample achieves an ultra‐high zT ∼1.51, cooling temperature difference of ∼70 K, power ...
Ruiheng Li, Minwen Yang, Huangshui Ma, Jie Zheng, Shengqiang Cui, Xiaobo Tan, Xuri Rao, Xiang An, Zongxiang Kan, Siqi Huo, Jing Shuai, Min Hong, Ran Ang   +12 more
wiley   +1 more source