Results 131 to 140 of about 11,992 (214)

Position of the Lhasa Terrane and Two‐Stage Crustal Shortening During the India–Asia Collision

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract The paleolatitudinal change of the Lhasa Terrane is critical for estimating the timing of the India–Asia collision and associated syn‐to post‐collisional crustal shortening, but its paleoposition is highly debated. Here we present integrated geochronologic and paleomagnetic results from the Lower Eocene Nianbo Formation in the Linzhou Basin ...
Zhenhua Jia, Pan Zhao, Yifei Hou, Yue Liu, Siyuan Li, Jiahui Ma, Chenglong Deng   +6 more
wiley   +1 more source

Ultrafast spin transport as key to femtosecond demagnetization

, 2013
Irradiating a ferromagnet with a femtosecond laser pulse is known to induce an ultrafast demagnetization within a few hundred femtoseconds. Here we demonstrate that direct laser irradiation is in fact not essential for ultrafast demagnetization, and that
Mitzner, Rolf (Prof. Dr.), Oppeneer, P. M., Pontius, N., Battiato, Marco,, Eschenlohr, A., Maldonado, P., Maldonado, Pablo,, Oppeneer, P.M., Battiato, Marco, Maldonado, R., Mitzner, R., Föhlisch, A., Stamm, C., Eschenlohr, Andrea (Dr.), Holldack, K., Föhlisch, Alexander (Prof. Dr.), Oppeneer, Peter M.,, Kachel, T., Battiato, M., Foehlisch, A.   +19 more
core   +1 more source

Ultra‐Weak Photon Emission as a By‐Product of Mitochondrial Oxidative Metabolism: Mechanisms, Limits, and Implications

Nanophotonics, Volume 15, Issue 20, 27 October 2026.
Mitochondrial oxidative metabolism generates ROS. Downstream chemiexcitation triplet carbonyls, singlet oxygen; produces ultra‐weak photon emission (UPE). Energetic bounds restrict well‐coupled respiration to extremely weak, red/NIR‐biased emission. Stronger visible UPE indicates elevated oxidative flux, linking measured photon counts to redox state ...
Samuel Crowther, Alice Attenborough, Frank Vollmer   +2 more
wiley   +1 more source

Fault-Tolerant Redesign of a Quad-Winding PMSM to Prevent Irreversible Partial Demagnetization

Actuators
This paper proposes a fault-tolerant optimal design method for quad-winding permanent magnet synchronous motors (PMSMs) considering irreversible demagnetization under fault conditions.
Min-Seong Jo, Young-Joon Song, Kyung-il Woo, Kyu-Yun Hwang   +3 more
doaj   +1 more source

Quantifying Non‐Maxwellian Properties of Ion Populations During Reconnection at Earth's Magnetopause

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract We investigate ion velocity‐space features within the exhaust of magnetopause reconnection using a global hybrid‐Vlasov simulation. The Hermite transform and Gaussian Mixture Model (GMM) are applied to quantify the complexity of velocity‐space structures that arise during the mixing of magnetospheric and magnetosheath ion populations.
I. Zaitsev, K. Papadakis, L. Pänkäläinen, M. Alho, S. Hoilijoki, U. Ganse, T. Roos, M. Palmroth   +7 more
wiley   +1 more source

Onset of Thrusting at ca. 23 Ma in East Kunlun Mountains, Northern Tibet, Recorded by Syntectonic Strata

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract The timing of Cenozoic deformation in the East Kunlun Mountains, northern Tibet, is crucial for understanding plateau growth but remains disputed due to the scarcity of direct chronological constraints on specific tectonic structures. Here, we present a high‐density‐sampling magnetostratigraphic record from the Xiaohongshan section, interior ...
Leyi Li, Hong Chang, Balázs Bradák, Xiaoke Qiang   +3 more
wiley   +1 more source

Different Orbital Controls on Detrital Magnetic Components in the Ninety‐East Ridge Since the Late Pleistocene

Geophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Magnetic minerals preserved in marginal‐sea sediments can serve as distinct fingerprints for unraveling paleoenvironmental evolution. However, the forcing mechanisms that govern the transport and accumulation of individual magnetic minerals at orbital timescales remain poorly constrained.
Yulong Guan, Zhaoxia Jiang, Sanzhong Li, Juan C. Larrasoaña, Liang Chen, Liang Zhou, Zhengxin Yin   +6 more
wiley   +1 more source

Demagnetization analysis of outer-rotor-type BLDC motors considering permanent magnet overhang structure

AIP Advances
This paper presents an analysis of demagnetization of an outer rotor type brushless DC (BLDC) motor with a permanent magnet (PM) overhang structure.
Tae-Seong Kim, Hyo-Seob Shin, Jun-Won Yang, Yong-Joo Kim, Kyung-Hun Shin, Jang-Young Choi   +5 more
doaj   +1 more source

Sparse‐Aperture Quasi‐Achromatic Spintronic Terahertz Emitter Enabled by Binary‐Phase Metasurface and Multi‐Spectral Intensity Optimization

Nanophotonics, Volume 15, Issue 19, 13 October 2026.
We propose a sparse‐aperture shared‐aperture design with multispectral intensity optimization, enabling a Pt/W binary‐phase metasurface directly integrated with a spintronic emitter. The device achieves quasi‐achromatic focusing across 1.0–1.5 THz, with intensity fluctuation below 33% and edge preservation above 0.68.
Wenkai Qiu, Yongshan Liu, Yunqing Jiang, Yong Xu, Sylvain Eimer, Xiaoqiang Zhang, Weisheng Zhao   +6 more
wiley   +1 more source

Magnetocaloric Properties of Centered Molecular Quantum Spin Systems

physica status solidi (a), Volume 223, Issue 19, 6 October 2026.
Sub‐Kelvin temperatures are needed for quantum computers and other quantum devices. Refrigeration employing magnetic materials is able to achieve the necessary very low temperatures of a few millikelvins above absolute zero. In this article, we investigate the magnetocaloric properties of a class of centered magnetic molecules and study their ...
Hamza Meel, Jürgen Schnack
wiley   +1 more source