Results 71 to 80 of about 1,545,217 (255)

Evolution of the thermodynamic properties of a coronal mass ejection in the inner Corona

Frontiers in Astronomy and Space Sciences, 2023
The thermodynamic evolution of Coronal Mass Ejections (CMEs) in the inner corona (≤1.5 Rsun) is not yet completely understood. In this work, we study the evolution of thermodynamic properties of a CME core observed in the inner corona on 20 July 2017, by
Jyoti Sheoran, Vaibhav Pant, Ritesh Patel, Ritesh Patel, Dipankar Banerjee, Dipankar Banerjee, Dipankar Banerjee   +6 more
doaj   +1 more source

Alfven Waves and Turbulence in the Solar Atmosphere and Solar Wind [PDF]

The Astrophysical Journal, 2007
We solve the problem of propagation and dissipation of Alfvenic turbulence in a model solar atmosphere consisting of a static photosphere and chromosphere, transition region, and open corona and solar wind, using a phenomenological model for the turbulent dissipation based on wave reflection.
VERDINI, ANDREA, VELLI, MARCO
openaire   +3 more sources

Forward‐Biased Perovskite Photodiodes for In‐Sensor Optical Change Sensing

Advanced Functional Materials, EarlyView.
A forward‐biased perovskite photodiode is introduced as an in‐sensor analog preprocessing unit that uses current balancing between photocurrent and injection current to generate optical changes relative to programmable optical reference levels. The device directly converts reference‐relative optical changes into bipolar current signals, enabling sensor‐
Eungseon Yeon, Je‐Jun Lee, Somin Yun, Sangin Hahn, Chanhyeok Kim, Jinsoo Park, Jung Pyo Hong, Seong‐Jun Han, Jung Woo Kim, Jeong Hwan Lee, Subin Jeon, Youngmin Kim, Gunuk Wang, Hanul Min, Do Kyung Hwang   +14 more
wiley   +1 more source

Charge‐Polarized Ni─S4 Single‐Atom Sites Drive Selective Photoreforming of Poly(lactic acid) to Lactate and Hydrogen

Advanced Functional Materials, EarlyView.
Atomically dispersed Ni–S4 sites on CdS nanorods induce interfacial charge polarization, directing photogenerated electrons to H2 evolution and holes to selective ester‐bond cleavage of poly(lactic acid). Without sacrificial reagents, this charge‐coupled system produces lactate while suppressing overoxidation, achieving an H2 evolution rate of 41.74 ...
Yu Yao, Panpan Zhang, Jinqiang Zhang, Xi‐lin Wu, Tara Pukala, Yifei Wang, Bernt Johannessen, Shaobin Wang, Xiaoguang Duan   +8 more
wiley   +1 more source

The Lower Solar Atmosphere

, 1998
This “rapporteur” report discusses the solar photosphere and low chromosphere in the context of chemical composition studies. The highly dynamical nature of the photosphere does not seem to jeopardize precise determination of solar abundances in classical fashion.
openaire   +2 more sources

Sacrificial‐Layer‐Assisted Heat‐Affected‐Zone Suppression in Laser Patterning of PET for High‐Performance Flexible Devices

Advanced Functional Materials, EarlyView.
A removable sacrificial polymer layer engineers the thermal boundary condition during nanosecond laser ablation of PET, suppressing heat‐affected‐zone formation without relying on costly ultrafast lasers. This strategy enables deep, high‐aspect‐ratio trenches with no detectable heat‐affected zone, templating silver‐filled mesh electrodes with record ...
Mehdi Zarei, Mirza Sahaluddin, Mostafa Bedewy, Paul W. Leu   +3 more
wiley   +1 more source

Propagating Wave Phenomena Detected in Observations and Simulations of the Lower Solar Atmosphere [PDF]

, 2012
We present high-cadence observations and simulations of the solar photosphere, obtained using the Rapid Oscillations in the Solar Atmosphere imaging system and the MuRAM magnetohydrodynamic (MHD) code, respectively. Each data set demonstrates a wealth of
Shelyag, S., Christian, D. J., Jess, D. B.; id_orcid, Christian, Damian, Keenan, Francis, Keys, P.H., Mathioudakis, Mihalis, Christian, D.J., Mathioudakis, M., Keys, P. H. ; id_orcid, Keenan, F.P., Jess, David, Shelyag, Sergiy, Keys, Peter, Keenan, F. P.   +14 more
core   +1 more source

Degradation effects of maritime atmosphere on metallic components of solar collectors

, 2022
S.246-254The influence of mixed maritime atmosphere on the degradation of metallic components of exposed solar thermal collectors was studied. Corrosion measurements of standard metal samples (unalloyed carbon steel, zinc, copper and aluminum) were ...
Köhl, Michael, Dürr, Ines, Kaltenbach, Thomas, Slamova, Karolina   +3 more
core   +1 more source

Halide Composition Controls Phase Morphology and Device Specific Performance in Perovskite Photovoltaics and Light Emitting Diodes

Advanced Functional Materials, EarlyView.
We demonstrate that halide composition determines phase morphology, governing distinct operating mechanisms in mixed halide perovskites. Phase segregating 75% Br compositions enhance solar cell performance, whereas intrinsically phase‐separated 95% Br compositions provide stable light emitting diodes.
Tal Binyamin, Stav Rahmany, Anat Shvets, Hadar Shema, Elad Gross, Ido Hadar, Lioz Etgar   +6 more
wiley   +1 more source

Atmospheric Physics and Atmospheres of Solar-System Bodies [PDF]

, 2018
The physical principles governing the planetary atmospheres are briefly introduced in the first part of this chapter, moving from the examples of Solar System bodies. Namely, the concepts of collisional regime, balance equations, hydrostatic equilibrium and energy transport are outlined. Further discussion is also provided on the main drivers governing
openaire   +2 more sources