Results 91 to 100 of about 72,949 (314)

Alfvén Waves in the Lower Solar Atmosphere [PDF]

Science, 2009
The flow of energy through the solar atmosphere and the heating of the Sun's outer regions are still not understood. Here, we report the detection of oscillatory phenomena associated with a large bright-point group that is 430,000 square kilometers in area and located near the solar disk center.
Jess, David B., Mathioudakis, Mihalis, Erdélyi, Robert, Crockett, Philip J., Keenan, Francis P., Christian, Damian J.   +5 more
openaire   +5 more sources

Interface‐Defect Synergy Engineering of Amorphous Ga2O3 for Voltage‐Tunable Dual‐Mode Optoelectronic Devices: Self‐Powered Imaging and Neuromorphic Vision

Advanced Functional Materials, EarlyView.
An interface‐defect co‐engineered strategy enables bias‐programmable integration of self‐powered photodetection and low‐power synaptic functionalities within a single‐material amorphous Ga2O3 device. This design achieves reversible switching via voltage modulation, supporting high‐contrast imaging and visual memory, and demonstrates a neuromorphic ...
Wanjun Li, Aijiang Yan, Lijuan Ye, Xuanyu Shan, Chunyan Liu, Hong Zhang, Shuren Zhou, Honglin Li, Di Pang, Yan Tang, Guoping Qin, Zhongqiang Wang, Peng Yu, Zhenxiang Cheng   +13 more
wiley   +1 more source

Determining solar effects in Neptune’s atmosphere [PDF]

Nature Communications, 2016
AbstractLong-duration observations of Neptune’s brightness at two visible wavelengths provide a disk-averaged estimate of its atmospheric aerosol. Brightness variations were previously associated with the 11-year solar cycle, through solar-modulated mechanisms linked with either ultraviolet or galactic cosmic ray (GCR) effects on atmospheric particles.
Aplin, K. L., Harrison, R. G.
openaire   +6 more sources

Bismuth‐Based Photocatalysts for Water Remediation: Design Strategies, Mechanisms, and Challenges

Advanced Functional Materials, EarlyView.
This review highlights representative design strategies for bismuth‐based semiconductor photocatalysts in solar‐driven water purification. Emphasis is placed on electronic structure regulation, oxygen‐vacancy engineering, and interfacial coupling to enable efficient full‐spectrum light utilization, improved charge separation, and selective oxidation in
Shan Liu, Yi Zhao, Liming Cai, Simin Long, Jing Kang, Jingkai Lin, Jimin Shen, Zhonglin Chen, Shaobin Wang, Huayang Zhang   +9 more
wiley   +1 more source

Replacement and late formation of atmospheric N2 on undifferentiated Titan by impacts [PDF]

, 2011
Saturn’s moon, Titan, has remarkable surface features—a massive N2 atmosphere and hydrological cycle of CH4—that are often compared with that of Earth^1^. However, the origin and evolution of Titan’s atmosphere remains largely
Toshihiko Kadono, Yasuhito Sekine, Seiji Sugita, Hidenori Genda, Takafumi Matsui   +4 more
core   +1 more source

Solar wind dependence of ion parameters in the earth's magnetospheric region calculated from CLUSTER observations [PDF]

, 2008
Moments calculated from the ion distributions (~0–40 keV) measured by the Cluster Ion Spectrometry (CIS) instrument are combined with data from the Cluster Flux Gate Magnetometer (FGM) instrument and used to characterise the bulk properties of the plasma
M. G. G. T. Taylor, Denton, M. H., Taylor, M. G. G. T., M. H. Denton   +3 more
core   +1 more source

Energetics and Emission in a Simulated Solar Flare Initialized by a Non-force-free Magnetic Field

The Astrophysical Journal
Solar flare simulations are commonly initialised using nonlinear force-free field (NLFF) extrapolations derived from photospheric vector magnetograms.
W. Bate, M. Gordovskyy, A. Prasad, A. S. Brun, A. Strugarek, M. V. Sieyra, P. K. Browning, S. Inoue, K. Matsumoto, A. Roddanavar   +9 more
doaj   +1 more source

Reconstructing Quantum Dot Surfaces via Dual‐Functional Ligand Pairing Enables Efficient Shortwave Infrared Optoelectronics

Advanced Functional Materials, EarlyView.
This work presents a ligand‐pairing strategy that reconstructs lead sulfide quantum dot surfaces for efficient short‐wave infrared optoelectronics. A low‐reactivity thiourea precursor combined with hydrobromic acid enables monodisperse and fully passivated quantum dots.
Dongeon Kim, Minjung Yang, Yunjin Lee, Gaeun Cho, Min‐Jae Si, Jaewoo Jeong, Seoryeon Jeong, Sol‐Hee Kim, Taeho Han, Seungin Jee, Byeong‐Chan Kim, Woong Kim, Seungmin Lee, Jun Hong Noh, Han Seul Kim, Yujin Jung, Se‐Woong Baek   +16 more
wiley   +1 more source

Ozone Depletion and Global Warming [PDF]

, 2006
This thesis examines global warming and the possible contribution that ozone depletion provides to this warming. An examination is performed to determine the extent of any warming/cooling events within the Earth-atmosphere system.
Fow, Alista John
core  

Probing the high latitude ionosphere from ground-based observations: The state of current knowledge and capabilities during IPY (2007-2009) [PDF]

, 2008
During the International Polar Year (IPY), one area of great interest is co-coordinated, multi-instrument probing of the ionosphere at high latitudes. This region is important not only for the applications that rely upon our understanding of it, but also
Freeman, M., Mitchell, C. N., Liu, R., Luntama, J.-P., Alfonsi, Lucilla, Kauristie, Kirsti, Cilliers, Pierre, Correia, Emilia, Zherebtsov, G. A., Mitchell, C.N., Freeman, Mervyn, Mitchell, Cathryn N., Kavanagh, Andrew J., Alfonsi, Lu., Zherebtsov, G.A., Kauristie, K., Freeman, M.P., Amata, E., Kavanagh, A.J., Liu, Ruiyuan, Correia, E., Amata, Ermanno, Kavanagh, A. J., Luntama, Juha-Pekka, Alfonsi, L., Luntama, J-P., Cilliers, P.   +26 more
core   +1 more source