Results 31 to 40 of about 39,293 (293)

Optical vortex trap for resonant confinement of metal nanoparticles [PDF]

, 2008
The confinement and controlled movement of metal nanoparticles and nanorods is an emergent area within optical micromanipulation. In this letter we experimentally realise a novel trapping geometry near the plasmon resonance using an annular light field ...
Adams, Allen, Ashkin, Barton, Bradshaw, Brevik, Clifford, Csaki, Gordon, Hansen, Johnson, Kishan Dholakia, Kühn, Mansuripur, Maria Dienerowitz, McGloin, Michael Mazilu, Mie, Nieto-Vesperinas, O’Neil, Pelton, Peter J. Reece, Prikulis, Rohrbach, Seol, Svedberg, Svoboda, Thomas F. Krauss, Toussaint   +28 more
core   +1 more source

Tetrads in Geometrodynamics

, 2004
A new tetrad is introduced within the framework of geometrodynamics for non-null electromagnetic fields. This tetrad diagonalizes the electromagnetic stress-energy tensor and allows for maximum simplification of the expression of the electromagnetic ...
Alcides Garat, Carmeli M., Stephani H., Weinberg S.   +3 more
core   +1 more source

Schwarz-Sen duality made fully local [PDF]

, 2000
Duality symmetric electromagnetic action a la Schwarz-Sen is shown to appear naturally in a chain of equivalent actions which interchange equations of motion with Bianchi identities.
Deser, Deser, R.L. Pakman, Schwarz
core   +2 more sources

The Third Theorem About Electromagnetic Forces Surface Representation in Anisotropic Regions

IET Science, Measurement & Technology
The paper concerns the theoretical problem of the electromagnetic force surface integral representation for diagonally anisotropic regions. The next theorem formulates an extension of the previous theorems, first and second (19), paragraph III.
Dariusz Aleksander Spałek
doaj   +1 more source

Torque characteristic analysis and measurement of axial flux-type non-contact permanent magnet device with Halbach array based on 3D analytical method

AIP Advances, 2017
This paper addresses the torque characteristic analysis of an axial flux-type non-contact permanent magnet device with a Halbach magnet array using a 3D analytical method based on transfer relations.
Gang-Hyeon Jang, Min-Mo Koo, Jeong-Man Kim, Jang-Young Choi   +3 more
doaj   +1 more source

Vibration Mechanism and Compensation Strategy of Magnetic Suspension Rotor System Under Unbalanced Magnetic Pull

IEEE Access, 2022
The existing imbalance compensation strategies for magnetic suspension motors mainly focus on the mass unbalance force, ignoring the effects of the unbalanced magnet pull (UMP).
Li Ji, Xueqing Ma
doaj   +1 more source

Holographic Charged Fluid with Anomalous Current at Finite Cutoff Surface in Einstein-Maxwell Gravity

, 2012
The holographic charged fluid with anomalous current in Einstein-Maxwell gravity has been generalized from the infinite boundary to the finite cutoff surface by using the gravity/fluid correspondence.
Bum-Hoon Lee, C Eling, C Niu, CP Herzog, D Anninos, D Brattan, DT Son, E Witten, ET Akhmedov, G Compere, G Compere, G Tallarita, G Tallarita, H Tan, I Amado, I Bredberg, I Bredberg, I Heemskerk, J Boer de, J Erdmenger, J Hur, JM Maldacena, K Jensen, K Landsteiner, K Landsteiner, M Cvetič, M Rangamani, M Torabian, N Banerjee, N Banerjee, N Iqbal, O Aharony, R Emparan, R-G Cai, R-G Cai, R-G Cai, RA Bertlmann, RB Mann, RC Myers, S Bhattacharyya, S Deser, S Deser, S Gubser, S Haro de, S Kuperstein, S Nakamura, S-J Sin, T Faulkner, T Kalaydzhyan, T-Z Huang, V Balasubramanian, V Balasubramanian, WA Bardeen, Xiaojian Bai, Y Brihaye, Y Matsuo, Y Matsuo, Y-P Hu, Y-P Hu, Y-P Hu, Ya-Peng Hu, Yun-Long Zhang   +61 more
core   +1 more source

Electromagnetic field correlators, Maxwell stress tensor, and the Casimir effect for parallel walls [PDF]

Brazilian Journal of Physics, 2005
We evaluate the quantum electromagnetic field correlators associated with the electromagnetic vacuum distorted by the presence of two plane parallel conducting walls and in the presence of a conducting wall parallel to a perfectly magnetically permeable one. Regularization is performed through the generalized zeta funtion technique. Results are applied
Santos, F. C., Passos Sobrinho, J. J., Tort, A. C.   +2 more
openaire   +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

Influence of high‐order electromagnetic force on vibration characteristics of induction motor

IET Electric Power Applications, 2023
The exploration of electromagnetic vibration sources is very important for the vibroacoustic reduction of a squirrel‐cage induction motor. However, the influence of high‐order electromagnetic force on the electromagnetic vibration of induction motor has ...
Xiaopeng Liu, Jianfeng Hong, Bingxiang Sun, Weige Zhang, Jiuchun Jiang   +4 more
doaj   +1 more source