Results 51 to 60 of about 110,240 (298)

Two types of mirror mode waves in the Kronian magnetosheath

Earth and Planetary Physics, 2023
A mirror mode wave is a fundamental magnetic structure in the planetary space environment that is persistently compressed by solar wind, especially in the magnetosheath.
XinYa Duanmu, ZhongHua Yao, Yong Wei, ShengYi Ye   +3 more
doaj   +1 more source

Fully 3D‐Printed Wave‐Wound Electromagnetic Motors

Advanced Materials Technologies, EarlyView.
This work presents the first fully 3D‐printed wave‐wound electromagnetic motors, which are created using conductive nanoparticle inks, carbon‐filled nylon polymers, and surface mount components. These motors can achieve a stall torque of 7.62N·mmA−1$7.62 \nobreakspace N{\cdot }mm A^{-1}$ and efficiency of 28.2 %, which approaches the performance of ...
Joseph Schwalbe, Sebastian Mettes, Eduardo Francke, Kenneth W. Allen, Yi Chen Mazumdar   +4 more
wiley   +1 more source

Gravitational decoherence of planetary motions

, 2001
We study the effect of the scattering of gravitational waves on planetary motions, say the motion of the Moon around the Earth. Though this effect has a negligible influence on dissipation, it dominates fluctuations and the associated decoherence ...
A Lambrecht, Blanchet L., Bois E., DeWitt B. S., Feynman R. P., Grishchuk L. P., Grishchuk L. P., Grishchuk L. P., Jaekel M. T., Jaekel M. T., Karolyhazy F., Landau L. D., M.-T Jaekel, Misner C. W., P. A. Maia Neto, S Reynaud, Schutz B., Ungarelli C.   +17 more
core   +1 more source

Micromachined Double‐Membrane Mechanically Tunable Metamaterial for Thermal Infrared Filtering

Advanced Photonics Research, Volume 6, Issue 5, May 2025.
Herein, a mechanically tunable double‐layer plasmonic metamaterial leveraging the extraordinary optical transmission effect observed in subwavelength arrays of openings within thin metal layers is presented. The concept is experimentally validated by integrating the proposed metamaterial structure into an electrostatic parallel‐plate actuator to create
Oleg Bannik, Fedor Kovalev, Mingkai Liu, Michal Zawierta, Dilusha Silva, Lorenzo Faraone, Mariusz Martyniuk, Ilya Shadrivov   +7 more
wiley   +1 more source

Global Winds Shape Planetary‐Scale Lamb Waves

Geophysical Research Letters, 2023
In 2022, the Hunga volcano eruption in Tonga generated atmospheric pressure waves that propagated globally and produced tsunamis in all the world's oceans.
Ignacio Sepúlveda, Matías Carvajal, Duncan C. Agnew   +2 more
doaj   +1 more source

Quasi-Two-Dimensional Dynamics of Plasmas and Fluids [PDF]

, 1994
In the lowest order of approximation quasi-twa-dimensional dynamics of planetary atmospheres and of plasmas in a magnetic field can be described by a common convective vortex equation, the Charney and Hasegawa-Mirna (CHM) equation. In contrast to the two-
Akira Hasegawa, Antipov S. V., Antipov S. V., Antonova R. A., Antonova R. A., Balk A. M., Balk A. M., Charney J. G., Dyanchenko A. I., Ertel H., Gordin V. A., Gordin V. A., Horton W., Jovanović D., Kadomtsev B. B., Kandrup H. E., Kolmogorov A. N., Laedke E. W., Laedke E. W., Larichev V. D., Larichev V. D., Mazzucato E., Novakovskii S. V., Nycander J., Petviashvili V. I., Petviashvili V. I., Petviashvili V. I., Petviashvili V. I., Petviashvili V. I., Piterbarg L. I., Rudakov L. I., Shapiro V. D., Stewart H. J., Surko C. M., Tasso H., Wakatani M., Waltz R. E., Wendell Horton, Williams G. P.   +38 more
core   +1 more source

Elimination of Necking and Aspect Ratio Dependence in Uniaxial Actuators by Continuous Fiber Reinforcement

Advanced Robotics Research, EarlyView.
A novel carbon fiber reinforcement for dielectric elastomer actuators enhances actuation force while decoupling electromechanical performance from the actuator's aspect ratio. Unlike conventional fiber reinforcements, it enables a uniform planar stretch state along the entire actuator.
Markus Koenigsdorff, Stefania Konstantinidi, Anett Endesfelder, Petr Osipov, Johannes Mersch, E.‐F. Markus Vorrath, Martina Zimmermann, Yves Perriard, Gerald Gerlach   +8 more
wiley   +1 more source

Signature of Two‐Step Non‐Linear Interactions Associated to Zonally Symmetric Waves During Major Sudden Stratospheric Warmings

Geophysical Research Letters, 2023
Atmospheric tides and associated dynamics during two major boreal sudden stratospheric warmings (SSWs) have been investigated. The evolutionary Lomb Scargle and wavelet spectral analysis of specular meteor radar (SMR)‐derived hourly winds reveal evidence
G. Mitra, A. Guharay, J. F. Conte, J. L. Chau   +3 more
doaj   +1 more source

Observational Evidence of Distinguishable Weather Patterns for Three Types of Sudden Stratospheric Warming During Northern Winter

Frontiers in Earth Science, 2021
Sudden stratospheric warming (SSW) events often lead to a cold surface air temperature anomaly over the extratropical regions. In this study, we propose, through observational evidence, that the types of SSW determine the severity of the cold anomaly ...
Hyesun Choi, Joo-Hong Kim, Baek-Min Kim, Seong-Joong Kim   +3 more
doaj   +1 more source

Planetary Evaporation and the Dynamics of Planet Wind/Stellar Wind Bow Shocks

, 2015
We present initial results of a new campaign of simulations focusing on the interaction of planetary winds with stellar environments using Adaptive Mesh Refinement methods.
Blackman, E. G., Carroll-Nellenback, J., Dobbs-Dixon, I., Frank, A., Kasting, J. F., Liu, B., Quillen, A. C.   +6 more
core   +1 more source