Results 41 to 50 of about 1,058,127 (374)

Fractional Skyrmion Tubes in Chiral‐Interfaced 3D Magnetic Nanowires

Advanced Functional Materials, EarlyView.
In chiral 3D helical magnetic nanowires, the coupling between the geometric and magnetic chirality provides a way to create topological spin states like vortex tubes. Here, it is demonstrated how the breaking of this coupling in interfaced 3D nanowires of opposite chirality leads to even more complex topological spin states, such as fractional ...
John Fullerton, Naëmi Leo, Jakub Jurczyk, Claire Donnelly, Dédalo Sanz‐Hernández, Luka Skoric, Nicholas Mille, Stefan Stanescu, Donald A MacLaren, Rachid Belkhou, Aurelio Hierro‐Rodriguez, Amalio Fernández‐Pacheco   +11 more
wiley   +1 more source

Search for possible exomoons with FAST telescope

, 2017
Our knowledge of the Solar System, encourages us to beleive that we might expect exomoons to be present around some of the known exoplanets. With present hardware and existing optical astronomy methods we shall not be able to find exomoons at least 10 ...
Lukic, Dragan
core   +1 more source

A Radio Astronomy Search for Cold Dark Matter Axions [PDF]

, 2017
The search for axions has gained ground in recent years, with laboratory searches for cold dark matter (CDM) axions, relativistic solar axions, and ultra-light axions as the subject of extensive literature.
K. Kelley, P. Quinn
semanticscholar   +1 more source

Low‐Symmetry Weyl Semimetals: A Path to Ideal Topological States

Advanced Functional Materials, EarlyView.
This study presents a theoretical framework for realizing ideal Weyl semimetals, where Weyl nodes are well‐isolated at the Fermi level. The approach is exemplified in the low‐symmetry material Cu2SnSe3, which exhibits tunable topological phases, current‐induced orbital magnetization, and a strong circular photogalvanic effect, making it a promising ...
Darius‐Alexandru Deaconu, Varun Shah, Rodion Vladimirovich Belosludov, Mohammad Saeed Bahramy   +3 more
wiley   +1 more source

The coexistence of cognitive radio and radio astronomy [PDF]

, 2009
An increase of the efficiency of spectrum usage requires the development of new communication techniques. Cognitive radio may be one of those new technique, which uses unoccupied frequency bands for communications.
Baan, W.A., Bentum, M.J., Boonstra, A.J.
core   +1 more source

Ion‐Selective Microporous Membranes via One‐Step Copolymerization Enable High‐Performance Redox Flow Batteries

Advanced Functional Materials, EarlyView.
A scalable one‐step copolymerization strategy is developed to produce low‐cost microporous ion exchange membranes that boost both the efficiency and lifespan of flow batteries. When combined with organic electrolytes in aqueous systems, these membranes enable safe and cheap flow battery energy storage, supporting the widespread integration of renewable
Jiaye Liu, Chunchun Ye, Ying Ma, Rui Tan, Xiangwen Wang, Huiting Zhang, Peng Song, Quan‐Fu An   +7 more
wiley   +1 more source

Radio Astronomy [PDF]

, 1982
Contains reports on eleven research projects.National Science Foundation (Grant AST79-25075)National Science Foundation (Grant AST79-20984)National Science Foundation (Grant AST79-19553)U.S.
Ali, Ali D. S., Barrett, Alan H., Burke, Bernard F., Garnavich, Peter M., Ghosh, Biswa, Jin, Jian-sheng, Johnson, Timothy L., Komichak, Michael J., Lamb, R. H., Lang, Jeffrey H., Myers, Philip C., Nathan, S. Krishna, Rosenkranz, Philip W., Shao, Michael, Shih, Shih-Ming, Staelin, David H., Sulecki, Joan M., Yam, Yeung   +17 more
core   +1 more source

First Radio Astronomy Examination of the Low-Frequency Broadband Active Antenna Subarray

Advances in Astronomy, 2014
We present the 25-element active antenna array and its remote control in the framework of the GURT project, the Ukrainian Radio Telescope of a new age. To implement beamforming, the array is phased with the help of discrete cable delay lines in analog ...
A. A. Stanislavsky, I. N. Bubnov, A. A. Konovalenko, A. A. Gridin, V. V. Shevchenko, L. A. Stanislavsky, D. V. Mukha, A. A. Koval   +7 more
doaj   +1 more source

DATA NETWORKING SUPPORT SERVICES OF PUSHCHINO RADIOASTRONOMY OBSERVATORY, ASTROSPACE CENTER OF LEBEDEV PHYSICAL INSTITUTE

Odessa Astronomical Publications, 2014
Growth of local area network Observatory associated with employee needs to access network resources has led to an increase in the number of computing and network devices. Until recently, we tested performance of these systems excellent manual and most of
D. V. Dumsky, E. A. Isaev, V. A. Samodurov, S. F. Likhachev, M. V. Shatskaya, M. A. Kitaeva, A. Yu. Zaytcev, I. L. Ovchinnikov, V. V. Kornilov   +8 more
doaj   +1 more source

Defects Dynamic in Photo‐Excited CeO2 and their Influence on CO2 Photoreduction

Advanced Functional Materials, EarlyView.
X‐ray photoelectron spectroscopy study under light excitation is presented to track the defect dynamic (Ce4+ to Ce3+) in CeO2. Surface enhanced Raman spectroscopy confirmed the key role of Ce3+ states in controlling charge and energy transfer across the CeO2‐dye molecule interface.
Rambabu Yalavarthi, Shashi B. Mishra, Olivier Henrotte, Emiliano Cortes   +3 more
wiley   +1 more source