Results 51 to 60 of about 7,750 (265)

Diagnosis of the solar atmosphere using solar oscillations [PDF]

Symposium - International Astronomical Union, 1988
I present a review of the art of using acoustic and gravity waves as a tool to probe the structure of the solar atmosphere. The principle ideas behind the technique are discussed and a small bouquet of results is presented. The current discrepancies are pointed out, and in the last section a few thoughts are let loose about the inversion of data to ...
openaire   +1 more source

Operation Limits of Integrated Photo‐Rechargeable Batteries

Advanced Materials, EarlyView.
This study elucidates the operational limitations of integrated photo‐rechargeable batteries. We demonstrate that the photo‐charging process is fundamentally restricted not only by material‐to‐material energy level alignment but also by transient capacitive charge accumulation within the cathode framework.
Byung‐Man Kim, Arvind Pujari, Hooman Abbasi, Weidong Xu, Yutong Han, Samuel D. Stranks, Michael De Volder   +6 more
wiley   +1 more source

Low-amplitude Solar-like Oscillations in the K5 V Star ϵ Indi A

The Astrophysical Journal
We have detected solar-like oscillations in the mid-K-dwarf ϵ Indi A, making it the coolest dwarf to have measured oscillations. The star is noteworthy for harboring a pair of brown dwarf companions and a Jupiter-type planet.
Mia S. Lundkvist, Hans Kjeldsen, Timothy R. Bedding, Mark J. McCaughrean, R. Paul Butler, Ditte Slumstrup, Tiago L. Campante, Conny Aerts, Torben Arentoft, Hans Bruntt, Cátia V. Cardoso, Fabien Carrier, Laird M. Close, João Gomes da Silva, Thomas Kallinger, Robert R. King, Yaguang Li, Simon J. Murphy, Jakob L. Rørsted, Dennis Stello   +19 more
doaj   +1 more source

Characterization of Droplet Formation in Ultrasonic Spray Coating: Influence of Ink Formulation Using Phase Doppler Anemometry and Machine Learning

Advanced Materials Technologies, EarlyView.
This study explores how machine learning models, trained on small experimental datasets obtained via Phase Doppler Anemometry (PDA), can accurately predict droplet size (D32) in ultrasonic spray coating (USSC). By capturing the influence of ink complexity (solvent, polymer, nanoparticles), power, and flow rate, the model enables precise droplet control
Pieter Verding, Danny E. P. Vanpoucke, Yunus T. Aksoy, Tobias Corthouts, Maria R. Vetrano, Wim Deferme   +5 more
wiley   +1 more source

The influence of opacity on inferred MHD wave signatures in the lower solar atmosphere

Frontiers in Astronomy and Space Sciences
Magnetohydrodynamic wave activity in small-scale magnetic structures, such as solar pores, provides key insights into energy transport in the lower solar atmosphere.
Samuel J. Skirvin, Samuel J. Skirvin, Samuel D. T. Grant, David B. Jess, David B. Jess, Ryan J. Campbell, Shahin Jafarzadeh, Mika V. Kontiainen, Mika V. Kontiainen, Michele Berretti, Michele Berretti, Timothy J. Duckenfield, Glen Chambers, Marco Stangalini, Luc Rouppe van der Voort, Luc Rouppe van der Voort   +15 more
doaj   +1 more source

The Role of High-frequency Transverse Oscillations in Coronal Heating

The Astrophysical Journal Letters, 2023
Transverse oscillations that do not show significant damping in solar coronal loops are found to be ubiquitous. Recently, the discovery of high-frequency transverse oscillations in small-scale loops has been accelerated by the Extreme Ultraviolet Imager ...
Daye Lim, Tom Van Doorsselaere, David Berghmans, Richard J. Morton, Vaibhav Pant, Sudip Mandal   +5 more
doaj   +1 more source

Advances in Electroactive Liquid Crystal Elastomers for Intelligent Robotics and Electronics

Advanced Robotics Research, EarlyView.
Electroactive liquid crystal elastomers (eLCEs) integrate molecular anisotropy with electrical functionality to enable programmable actuation and reconfigurable electronics. This review classifies eLCEs into robotic actuators and adaptive electronics, summarizes key actuation mechanisms, and highlights fabrication strategies that bridge materials to ...
Kavita Ramesh Rathod, Sena Chon, Jae Hyuk Hwang, Sung Hyuk Park, Woohwa Lee, Joonmyung Choi, Shi Hyeong Kim, Seung Hwan Ko, Changsoon Choi, Seon Jeong Kim, Dong‐Gyun Kim, Habeom Lee, Kyung Gook Cho, Woon‐Hong Yeo, Hyun Kim   +14 more
wiley   +1 more source

The n−n¯ oscillations in neutron fluxes running from Sun to Earth

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2011
The process of n−n¯ oscillations in the solar cosmic-rays is considered. It is shown that it has high intensity with respect to the analogic processes on the Earth (Ic−r/IEarth∝108), because magnetic field strongly suppresses n−n¯ oscillations. Energetic
L. S. Molchatsky
doaj   +1 more source

Solar neutrinos: Oscillations or No-oscillations?

, 2016
19 pages, 12 figures, Comments and 1 figure ...
openaire   +2 more sources

Solar and Solar-Like Oscillations: Theory [PDF]

Highlights of Astronomy, 1986
AbstractSolar five-minute oscillations provide a means of testing theoretical models of the sun. By judiciously combining data from low-degree modes, properties of the central and surface regions of the sun can be inferred separately. In principle, it should be possible to draw similar inferences from other stars, once adequate data are available ...
openaire   +1 more source