Results 51 to 60 of about 1,473,750 (302)

Generating Unconventional Spin‐Orbit Torques With Patterned Phase Gradients in Tungsten Thin Films

Advanced Materials, EarlyView.
ABSTRACT A key aim in spintronics is to achieve current‐induced magnetization switching via spin‐orbit torques without external magnetic fields. For this, the focus of recent work has been on introducing controlled lateral gradients across ferromagnet/heavy‐metal devices, giving variations in thickness, composition, or interface quality.
Lauren J. Riddiford, Anne Flechsig, Shilei Ding, Emir Karadža, Niklas Kercher, Tobias Goldenberger, Elisabeth Müller, Pietro Gambardella, Laura J. Heyderman, Aleš Hrabec   +9 more
wiley   +1 more source

Dynamic 3D Simulation of Surface Charging on Rotating Asteroids

The Astrophysical Journal
The surface-charging phenomenon of asteroids, mainly resulting from solar wind plasma and solar radiation, has been extensively studied. However, the influence of the asteroid’s rotation on surface charging is not yet fully understood.
Ronghui Quan, Zhiying Song, Zhigui Liu
doaj   +1 more source

Large‐Scale Determination of Frontier Orbital Energies of Disordered Small‐Molecule Organic Semiconductors Using Exciplex Emission Spectra

Advanced Materials, EarlyView.
ABSTRACT Accurately knowing the frontier orbital energies of the structurally disordered small‐molecule organic semiconductors that are used in optoelectronic devices such as organic light‐emitting diodes is required to rationally improve their performance. Here, we show that these energies can be deduced with a large accuracy from the peak energies of
Christian B. McDonald, Hiroki Tomita, Giacomo Cotelli, Louka L. Brüll, Nanno G. de Rooij, Lucas R.L. Norg, Milo Clément, Reinder Coehoorn   +7 more
wiley   +1 more source

Study on the Temporal Evolution of the Radial Differential Rotation of Solar Corona Using Radio Emissions

The Astrophysical Journal
The daily measurements of the disk-integrated solar radio flux, observed by the Radio Solar Telescope Network, at 245, 410, 610, 1415, 2695, 4995, and 8800 MHz during the time interval of 1989 January 1 to 2019 December 17, are used to investigate the ...
N. B. Xiang, X. H. Zhao, L. H. Deng, F. Y. Li, Y. J. Wang, X. W. Tan   +5 more
doaj   +1 more source

Spectral analysis of auroral geomagnetic activity during various solar cycles between 1960 and 2014 [PDF]

Annales Geophysicae, 2016
In this paper we use wavelets and Lomb–Scargle spectral analysis techniques to investigate the changing pattern of the different harmonics of the 27-day solar rotation period of the AE (auroral electrojet) index during various phases of different ...
P. B. Kotzé
doaj   +1 more source

Magnetically controlled stellar differential rotation near the transition from solar to anti-solar profiles

, 2015
VK: Karhunen, J.; ReSoLVEContext. Late-type stars rotate differentially owing to anisotropic turbulence in their outer convection zones. The rotation is called solar-like (SL) when the equator rotates fastest and anti-solar (AS) otherwise.
Pelt, J., M. J. Käpylä, Käpylä, Maarit J., Brandenburg, Axel,, Olspert, N., Karak, Bidya Binay,, B. B. Karak, A. Brandenburg, Kapyla, P. J., J. Pelt, Karak, Bidya B., Brandenburg, Axel, P. J. Käpylä, Käpylä, Petri J., Kapyla, M. J., Karak, B. B., N. Olspert   +16 more
core   +1 more source

Autonomous Folding of Soft Matter From Living Polymers

Advanced Materials, EarlyView.
Origami structures are endowed with “living” polymer creases that grow, remodel, and stiffen in response to nutrient solutions. This post‐fabrication growth enables autonomous folding, iterative regrowth, and mechanical tuning involving origami assemblies, such as cranes, Miura‐ori tessellations, rigid and non‐rigid square‐twist patterns, establishing ...
Jiahe Huang, Tuo Zhao, Shixi Zang, Deep Malu, Huajian Ji, Glaucio H. Paulino, Yuhang Hu   +6 more
wiley   +1 more source

III. Solar Rotation [PDF]

Transactions of the International Astronomical Union, 1985
The study of solar rotation using the Doppler effect in solar spectrum lines continues to be an active and fruitful area of research. Duvall (1982) has confirmed a slower rotation rate for the photosphere than for sunspots, which bears on an earlier controversy regarding this point between the Stanford Solar Observatory and some other observatories ...
openaire   +1 more source

Video1_The mechanism of magnetic flux rope rotation during solar eruption.MP4

, 2023
Solar eruptions often show the rotation of filaments, which is a manifestation of the rotation of erupting magnetic flux rope (MFR). Such a rotation of MFR can be induced by either the torque exerted by a background shear-field component (which is an ...
Yongqiang Hao (387139), Jun Cui (38349), Zhenjun Zhou (14667722), Yuming Wang (841765), Chaowei Jiang (11511262), Xiaoyu Yu (719777)   +5 more
core   +1 more source

Inverse Design of Nanoparticulate Materials

Advanced Materials, EarlyView.
Inverse design shifts nanomaterial development from empirical trial‐and‐error to predictive model‐driven strategies. It can rely on knowledge‐based, data‐based, or hybrid process and property functions. This perspective article provides a practical framework for applying inverse design based on instructive examples. It discusses which modeling approach
Nabi Etienne Traoré, Annika Mauch, Michelle Berthold, Lukas Pflug, Wolfgang Peukert, Nicolas Vogel   +5 more
wiley   +1 more source