Results 91 to 100 of about 3,067,597 (310)

Solar activity explored with new wavelet methods [PDF]

, 2005
International audienceIn order to improve the forecasts of the impact of solar activity on the terrestrial environment on time scales longer than days, improved understanding and forecasts of the solar activity are needed.
Liszka, L., Lundin, R., L. Liszka, R. Lundin, Lundstedt, H., H. Lundstedt   +5 more
core   +2 more sources

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

Analyzing the behavior of mid-latitude upper atmosphere ionospheric plasma and airglow I630 from IS radar and Fabry—Perot interferometer data

Solar-Terrestrial Physics
The dynamics of the parameters of ionized and neutral components of Earth’s upper atmosphere at midlatitudes near the equinox was studied for several days under quiet geomagnetic conditions.
Vasilyev Roman, Edemsky Ilya, Shelkov Aleksei, Artamonov Maksim, Alsatkin Sergei, Evseev Uigulan, Lebedev Valentin, Tashlykov Viktor, Tashchilin Anatoliy, Timchenko Aleksandr   +9 more
doaj   +1 more source

Diagnostics of HF radio channel: based on data from backscatter ionospheric sounding by continuous chirp signal

Solar-Terrestrial Physics, 2018
Backscatter ionospheric sounding (BIS) is a powerful tool for monitoring and predicting conditions of operation of HF communication systems. The BIS method is adopted to determine coverage areas of radio waves and maximum usable radio frequencies ...
Ponomarchuk S.N., Grozov V.P., Kotovich G.V., Kurkin V.I., Penzin M.S.   +4 more
doaj   +1 more source

Department of Physics Newsletter, Summer 2018 [PDF]

, 2018
Message from Dr. Kirk Korista, Department Chair 2017 Alumni Achievement Award, Physics 2017 Solar Eclipse Department of Physics Award ...
Department of Physics
core  

High‐Performance, Air‐Stable and Eco‐Friendly Terpene‐Processed Organic Solar Cells via Solvent‐Composition‐Controlled Film Formation Kinetics

Advanced Functional Materials, EarlyView.
Solvent‐composition‐controlled film formation enables high‐performance (efficiency = 18.66%) and air‐stable terpene‐processed organic solar cells. An optimized eucalyptol/tetralin ratio of 50:50 (v/v) balances molecular solvation and aggregation kinetics, producing favorable nanoscale phase separation and vertical composition gradients.
Hyerin Jeon, Seungho Lee, Jinseck Kim, Jin‐Woo Lee, Bumjoon J. Kim   +4 more
wiley   +1 more source

Ligand Assisted Epitaxial Growth of CsPbBr3 Microcrystal Resonators With Record ‐Low Lasing Thresholds

Advanced Functional Materials, EarlyView.
Solution‐based ligand‐assisted epitaxial growth (LAEG) yields high‐quality CsPbBr3 microcrystals on different substrates with superior morphology, passivated surfaces, and high photoluminescence quantum yield. These robust micro‐resonators achieve record‐low room‐temperature lasing thresholds of 7.2 kW·cm−2 and maintain operational stability up to 90 ...
Shuyu Zhou, Viktor Rehm, Zijian Peng, Tomáš Hrbek, Anastasia Barabash, Christoph J. Brabec, Berke Özyalin, Yufei Han, Johannes Böhmer, Johannes Will, Erdmann Spiecker, Klaus Götz, Tobias Unruh, Jędrzej Korczak, Tomasz Story, Felix Hilpert, Olaf Brummel, Jörg Libuda, Iva Matolínová, Wolfgang Heiss   +19 more
wiley   +1 more source

Effects of the May 10–13, 2024 magnetic storm in the Asian region of Russia from ionospheric sounding with a continuous chirp signal

Solar-Terrestrial Physics
Effects of the May 10–13, 2024 extreme magnetic storm in the Asian region of Russia have been studied using experimental data from vertical and oblique sounding of the ionosphere with a continuous chirp signal.
Ponomarchuk Sergey, Zolotukhina Nina, Kurkin Vladimir, Belinskaya Anastasiya, Grozov Viktor, Oinats Aleksey, Poddelsky Aleksey, Podlesnyi Aleksey, Cedrik Mark   +8 more
doaj   +1 more source

Long-lived meteor trails

Solar-Terrestrial Physics, 2019
The paper presents data on long-lived (~20–40 min) meteor trails. We describe a group of soliton-type meteor trails expanding at transonic speeds. Radio sounding data evidences that the latter include ~7–8 min ionization trails.
Mikhalev A.V., Beletsky A.B., Vasilyev R.V., Eselevich M.V., Ivanov K.I., Komarova E.S., Podlesnyi A.V., Podlesny S.V., Syrenova T.E.   +8 more
doaj   +1 more source

The sun's spotted area, 1832-1900. A statement of the mean daily area in each synodic rotation of the sun, based upon data colected at the Solar physics observatory, South Kensington.

, 1902
On cover: Solar physics committee.Mode of access ...
Solar Physics Committee (Great Britain), Lockyer, Norman, Sir, 1836-1920.   +1 more
core