Results 91 to 100 of about 1,764,811 (237)

Geometric Objects: A Quality Index to Electromagnetic Energy Transfer Performance in Sustainable Smart Buildings [PDF]

, 2018
Sustainable smart buildings play an essential role in terms of more efficient energy. However, these buildings as electric loads are affected by an important distortion in the current and voltage waveforms caused by the increasing proliferation of ...
Bravo-Rodríguez, Juan Carlos, Castilla Roldán, Manuel-Viggo   +1 more
core   +1 more source

Plasmon‐Doped Organic Heterojunction Optoelectronic Synapses for Near‐Infrared Visual Memory and Neuromorphic Computing

Aggregate, Volume 7, Issue 3, March 2026.
A near‐infrared organic photonic synapse with gold nanorods enhances light absorption and synaptic plasticity. When integrated into CNN and CSNN models, the device achieved accuracies of 98.57% and 92.01% on MNIST digit and dynamic gesture recognition tasks, respectively, demonstrating strong potential for intelligent vision and low‐power neuromorphic ...
Jiangcheng Cao, Hong Lian, Xianglin Wang, Qishuai Huang, Jiahui Ding, Jiangnan Xia, Shuanglong Wang, Weijin Hu, Tom Wu, Qingchen Dong   +9 more
wiley   +1 more source

Directional Polarization‐Independent Double‐Zero‐Index Material in a Three‐Dimensional Photonic Crystal With a Fourfold Semi‐Dirac Point

Nanophotonics, Volume 15, Issue 6, 27 March 2026.
We propose a strategy to realize directional polarization‐independent double‐zero‐index materials within a three‐dimensional photonic crystal which possesses a fourfold semi‐Dirac point. This point exhibits linear dispersions along one direction and quadratic dispersions along perpendicular directions in the momentum space. At the frequency of the semi‐
Rui Dong, Ying Wu, Changqing Xu
wiley   +1 more source

Negative-Index Metamaterials: Second-Harmonic Generation, Manley-Rowe Relations and Parametric Amplification

, 2006
Second harmonic generation and optical parametric amplification in negative-index metamaterials (NIMs) are studied. The opposite directions of the wave vector and the Poynting vector in NIMs results in a "backward" phase-matching condition, causing ...
A. Berrier, A.A. Zharov, A.A. Zharov, A.B. Kozyrev, A.K. Popov, A.N. Grigorenko, E. Schonbrun, J.M. Manley, K.I. Volyak, M. Lapine, M. Lapine, N.A. Zharova, S. Linden, S. Zhang, S.E. Harris, V.G. Veselago, V.G. Veselago, V.M. Agranovich, V.M. Shalaev, V.M. Shalaev, Z. Zhang   +20 more
core   +1 more source

Imaging the Perpendicular Plasma Dynamics Driving a Discrete Auroral Arc

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Measurements of motions and structuring in auroral luminosity are combined with magnetically connected plasma measurements from the Reimei spacecraft to image the perpendicular plasma dynamics active above a discrete auroral arc. It is demonstrated how the inversion of optical flow patterns specifies the potential structure above regions of ...
C. C. Chaston
wiley   +1 more source

Thermal balance and photon-number quantization in layered structures

, 2014
The quantization of the electromagnetic field in lossy and dispersive dielectric media has been widely studied during the last few decades. However, several aspects of energy transfer and its relation to consistently defining position-dependent ladder ...
Häyrynen, Teppo, Oksanen, Jani, Partanen, Mikko, Tulkki, Jukka   +3 more
core   +1 more source

MMS Observation of Trapping of Electrons by Chorus Waves Inside a Magnetic Hole

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract We present an event of chorus waves embedded within a magnetic hole (MH) in the Earth's magnetosheath, observed by the Magnetospheric Multi‐Scale (MMS) mission on 1 March 2016. Unlike conventional cases where chorus waves are typically detected near the center of a magnetic depression, in this event lower‐band chorus waves appear predominantly
Krushna C. Barik, Yoshiharu Omura, Satyavir Singh   +2 more
wiley   +1 more source

Quasilocal Conservation Laws: Why We Need Them

, 2012
We argue that conservation laws based on the local matter-only stress-energy-momentum tensor (characterized by energy and momentum per unit volume) cannot adequately explain a wide variety of even very simple physical phenomena because they fail to ...
Bell J S, de Matos C J Tajmar M, Epp R J, Epp R J, Gaidukov G N, Mashhoon B, Misner C W, Paul L McGrath, Richard J Epp, Rindler W, Robert B Mann   +10 more
core   +1 more source

Energy Partition at a Collisionless Supercritical Quasi‐Parallel Shock

Journal of Geophysical Research: Space Physics, Volume 131, Issue 3, March 2026.
Abstract Shocks in collisionless astrophysical plasmas redistribute some of the incident flow energy into both thermal and non‐thermal energy. Quantifying the partition of that energy amongst various particle species or their sub‐populations, and electromagnetic energy, represents a fundamental goal of shock physics.
Steven J. Schwartz, Karlheinz J. Trattner, Savvas Raptis, Robert E. Ergun, Lynn B. Wilson III, Roman G. Gomez, Ian J. Cohen, Daniel J. Gershman, Katherine A. Goodrich, Harald Kucharek, Tien Vo   +10 more
wiley   +1 more source

Dynamical laws of superenergy in General Relativity

, 2007
The Bel and Bel-Robinson tensors were introduced nearly fifty years ago in an attempt to generalize to gravitation the energy-momentum tensor of electromagnetism.
Alfonso García-Parrado Gómez-Lobo, Anderson A, Bel L, Bel L, Bel L, Bel L, Bergqvist G, Bergqvist G, Bergqvist G, Chevreton M, Ellis G F R, Eriksson I, Eriksson I, Hawking S W, Herrera L, Herrera L, Jackson D, Klainerman S, Lazkoz R, Maartens R, Martín-García J M, Mashoon B, Naber G L, Penrose R, Penrose R Rindler W, Senovilla J M M, Senovilla J M M, Stephani H, Szabados L, Thorne K S   +29 more
core   +1 more source