Results 51 to 60 of about 15,767 (205)

Novel aspects of radiation reaction in the classical and the quantum regime

, 2014
This work is dedicated to the study of radiation reaction signatures in the framework of classical and quantum electrodynamics. Since there has been no distinct experimental validation of radiation reaction and its underlying equations so far and its ...
Di Piazza, Antonino, Hatsagortsyan, Karen Z., Keitel, Christoph H., Kumar, Naveen, Mackenroth, Felix, Neitz, Norman   +5 more
core   +1 more source

Long‐Term Trends of Ionospheric Day‐to‐Day Variability During the Past Century

Geophysical Research Letters, Volume 52, Issue 20, 28 October 2025.
Abstract In this study, we explore the long‐term trend of ionospheric day‐to‐day variability induced by atmospheric perturbations over the past century, using time‐slice simulations by the whole atmospheric model. The main results show that the magnitude of the trends in the past century maximizes ∼±1% of the seasonal mean per decade.
Xu Zhou, Wenbo Li, Huixin Liu, Lianhuan Hu, Yi Li, Xinan Yue   +5 more
wiley   +1 more source

Near-field heat transfer in a scanning thermal microscope

, 2011
We present measurements of the near-field heat transfer between the tip of a thermal profiler and planar material surfaces under ultrahigh vacuum conditions.
Achim Kittel, Daniel Reddig, E. M. Lifshitz, J. Bass, J.-P. Mulet, J. L. Pan, J. L. Pan, Jürgen Parisi, Martin Holthaus, N. W. Ashcroft, S. Adachi, S. M. Rytov, Svend-Age Biehs, V. Ginzburg, Wolfgang Müller-Hirsch   +14 more
core   +1 more source

Deterministic Fabrication of Plasmonic Nanostructures on Optical Nanofibers via Blurred Electron Beam Deposition

Advanced Science, Volume 12, Issue 38, October 13, 2025.
A nanofabrication method enabling the direct growth of plasmonic nanostructures are presented on suspended tapered optical nanofibers via Blurred Electron Beam Induced Deposition (BEBID). By defocusing the beam to reduce mechanical stress, BEBID achieves sub‐20 nm precision and structural control, enabling directional scattering and light–matter ...
Antonio Balena, Marianna D'Amato, Muhammad Fayyaz Kashif, Chengjie Ding, Lucien Belzane, Gaia De Marzo, Hanna Le Jeannic, Massimo De Vittorio, Ferruccio Pisanello, Alberto Bramati   +9 more
wiley   +1 more source

Modeling Regional Electric Field Using EISCAT3D Observations

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract EISCAT3D, which is in its final stage of construction, will be the next generation incoherent scatter radar (ISR) system to provide the full ion velocity vector across hundreds of kms in vertical and horizontal directions. This presents a tremendous opportunity to study the three‐dimensional nature of ionospheric electrodynamics.
Habtamu W. Tesfaw, Heikki Vanhamäki, Ilkka Virtanen, Spencer Hatch, Matt Zettergren, Karl Laundal   +5 more
wiley   +1 more source

Artificial Neural Network Model of High‐Latitude Ionospheric Electric Potential: Hemispheric and Equinoctial Asymmetries

Earth and Space Science, Volume 12, Issue 10, October 2025.
Abstract The high‐latitude ionospheric electric field plays a key role in ionospheric plasma dynamics and energetics. Various ground‐ and satellite‐based observations have been utilized to develop empirical models of the convection electric field. Empirical modeling typically relies on statistical regression techniques, where predefined functions are ...
L. Lomidze, Johnathan K. Burchill, D. J. Knudsen   +2 more
wiley   +1 more source

Well-posedness and Ulam-Hyers stability results of solutions to pantograph fractional stochastic differential equations in the sense of conformable derivatives

AIMS Mathematics
One kind of stochastic delay differential equation in which the delay term is dependent on a proportion of the current time is the pantograph stochastic differential equation.
Wedad Albalawi, Muhammad Imran Liaqat , Fahim Ud Din, Kottakkaran Sooppy Nisar, Abdel-Haleem Abdel-Aty   +4 more
doaj   +1 more source

The Role of the Brain in Conscious Processes: A New Way of Looking at the Neural Correlates of Consciousness

Frontiers in Psychology, 2018
This article presents a new interpretation of the consciousness-related neuroscientific findings using the framework of stochastic electrodynamics (SED), a branch of physics that sheds light on the basic principles underlying quantum systems.
Joachim Keppler
doaj   +1 more source

Comparison of F‐Region Ion Velocities Measured by Swarm Satellites and EISCAT Radars

Journal of Geophysical Research: Space Physics, Volume 130, Issue 10, October 2025.
Abstract Ionospheric ion flow velocities measured by the Swarm satellites are compared with the ion velocities estimated from the European Incoherent Scatter (EISCAT) radar measurements in Tromsø and on Svalbard. A comparison is carried out between the cross‐track horizontal ion velocity component given by the Swarm Electric Field Instrument and the ...
M. L. Mekuriaw, A. T. Aikio, L. Cai, H. Vanhamäki, I. I. Virtanen, S. Buchert, N. Ivchenko, W. Miloch, Y. Jin, D. Knudsen, J. K. Burchill   +10 more
wiley   +1 more source

Quantum dissipation of planar harmonic systems: Maxwell-Chern-Simons theory

, 2019
The conventional Brownian motion in harmonic systems has provided a deep understanding of a great diversity of dissipative phenomena. We address a rather fundamental microscopic description for the (linear) dissipative dynamics of two-dimensional ...
Valido, Antonio A.
core   +1 more source