Results 51 to 60 of about 8,019 (262)

High Center‐of‐Mass, Multi‐Legged Soft Robots Powered by Geometrically Encoded Liquid Crystal Elastomer Arc Appendages

Advanced Materials, EarlyView.
Inspired by the octopus and the golden wheel spider, soft robots with liquid crystal elastomer arc fibers as appendages are fabricated to transcend surface constraints through an elevated center of mass and minimal contact footprints. By leveraging curvature‐encoded deformation‐recovery cycles, these robots exhibit contractile, torsional, and flexural ...
Jong Bin Kim, Antonio Proctor Martinez, Yaoye Hong, Ziyun Zhang, Kun‐Yu Wang, Shu Yang   +5 more
wiley   +1 more source

The energy-momentum tensor on the lattice: The scalar case

Nuclear Physics B, 1988
Abstract We show in an explicit example how to construct the energy-momentum tensor on the lattice satisfying the requirements of conservation and which gives rise to the correct scale anomaly in the limit of zero lattice spacing. This method is of general nature and can be applied also to gauge theories.
S. CARACCIOLO, G. CURCI, P. MENOTTI, PELISSETTO, Andrea   +3 more
openaire   +3 more sources

Transducers Across Scales and Frequencies: A System‐Level Framework for Multiphysics Integration and Co‐Design

Advanced Materials Technologies, EarlyView.
Transducers convert physical signals into electrical and optical representations, yet each mechanism is bounded by intrinsic trade‐offs across bandwidth, sensitivity, speed, and energy. This review maps transduction mechanisms across physical scale and frequency, showing how heterogeneous integration and multiphysics co‐design transform isolated ...
Aolei Xu, Mengyao Xiao, Zhouli Sui, Yinpeng Wang, Daoye Zheng, Yuxin Liu, Luwei Wang, Huajun Liu, Chengkuo Lee   +8 more
wiley   +1 more source

The two-loop energy–momentum tensor within the gradient-flow formalism

European Physical Journal C: Particles and Fields, 2018
The gradient-flow formulation of the energy–momentum tensor of QCD is extended to NNLO perturbation theory. This means that the Wilson coefficients which multiply the flowed operators in the corresponding expression for the regular energy–momentum tensor
Robert V. Harlander, Yannick Kluth, Fabian Lange   +2 more
doaj   +1 more source

Energy-momentum tensor of perturbed tachyon matter [PDF]

Physical Review D, 2009
We add an initial nonhomogeneous perturbation to an otherwise homogeneous condensing tachyon background and compute its space time energy-momentum tensor from worldsheet string theory. We show that in the far future the energy-momentum tensor corresponds to nonhomogeneous pressureless tachyon matter.
Jokela, Niko, Järvinen, Matti, Keski-Vakkuri, Esko   +2 more
openaire   +3 more sources

Magnetic Droplet Manipulation on Open Surfaces

Advanced Materials Technologies, EarlyView.
Recent advances in the manipulation of magnetic droplets demonstrate various manipulations on open surfaces, including transport, splitting, merging, and force‐controlled motion, enabled by magnetic particles and external fields. ABSTRACT Manipulation of liquids on a smaller scale enables applications in various fields, particularly diagnostics and ...
Robab Jahangir, Vahid Nasirimarekani
wiley   +1 more source

Note on holographic torus stress tensor correlators in AdS 3 gravity

Journal of High Energy Physics
In the AdS3/CFT2 framework, the Euclidean BTZ black hole corresponds to the dominant high-temperature phase of its dual field theory. We initially employ perturbative methods to solve the Einstein equations as boundary value problems, providing ...
Song He, Yi Li, Yun-Ze Li, Yunda Zhang
doaj   +1 more source

Fate of spin polarization in a relativistic fluid: An entropy-current analysis

Physics Letters B, 2019
We derive relativistic hydrodynamic equations with a dynamical spin degree of freedom on the basis of an entropy-current analysis. The first and second laws of local thermodynamics constrain possible structures of the constitutive relations including a ...
Koichi Hattori, Masaru Hongo, Xu-Guang Huang, Mamoru Matsuo, Hidetoshi Taya   +4 more
doaj   +1 more source

Unruh effect universality: emergent conical geometry from density operator

Journal of High Energy Physics, 2020
The Unruh effect has been investigated from the point of view of the quantum statistical Zubarev density operator in space with the Minkowski metric.
Georgy Y. Prokhorov, Oleg V. Teryaev, Valentin I. Zakharov   +2 more
doaj   +1 more source

The Evolution of Aerosol Jet Printing, A Review: Enhancing Material Versatility and Improvements for Next‐Generation Applications

Advanced Materials Technologies, EarlyView.
Aerosol Jet Printing (AJP) has emerged as a versatile additive manufacturing technique for high‐resolution, conformal, and multi‐material printing. This review highlights advances in printable materials, substrate compatibility, post‐processing, characterization, and process innovations, while critically discussing current challenges and future ...
Chandrachur Chatterjee, Rocco Lupoi, Michael J. Gibbons   +2 more
wiley   +1 more source