Results 131 to 140 of about 120,503 (315)

Superlong‐Range Magnetic Coupling and Ferromagnetic Spin Freezing in Mechanoluminescent Semiconductor Eu:SrAl2O4

open access: yesAdvanced Science, EarlyView.
Eu:SrAl2O4 emit visible light even upon finger contact. This mechanoluminescent material is an optimal platform for bound magnetic polarons to produce unexpected ferromagnetism, with the magnetic spins of Eu2+ sparsely distributed in the crystal lattice.
Xu‐Guang Zheng   +7 more
wiley   +1 more source

Evaluation of multi‐user multiple‐input multiple‐output digital beamforming algorithms in B5G/6G low Earth orbit satellite systems

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView., 2023
In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak   +3 more
wiley   +1 more source

Development and properties of cadmium and lead tungstate low-background scintillators for double beta decay experiments [PDF]

open access: yesЯдерна фізика та енергетика, 2014
Methods of deep purification of natural and isotopically enriched cadmium (Cd, 106Cd, 116Cd), as well as of archaeological lead (archPb), to produce cadmium and lead tungstate crystal scintillators have been developed. The basic stages of development and
G. P. Kovtun   +9 more
doaj  

Stimuli‐Responsive and Defect‐Regulated Luminescent Organic Metal Halide for High‐Security Anti‐Counterfeiting and Force Sensing

open access: yesAdvanced Science, EarlyView.
A smart 0D (C9NH20)6[Pb3Br12], exhibiting temperature/moisture/mechanical force‐responsive luminescence and tunable luminescence color, is developed. Crystal structure transformation, defect, and structure deformation are systematically clarified as the origins of this responsive luminescence behavior.
Chunyan Jiang   +6 more
wiley   +1 more source

Time and phase alignment of distributed gateways: Theoretical analysis and experimental demonstration

open access: yesInternational Journal of Satellite Communications and Networking, EarlyView., 2023
The performance limitation in multiple‐input multiple‐output (MIMO) feeder links due to time and phase misalignment of the ground stations is investigated. Time and phase distribution over optical fiber is considered as an approach to achieve the synchronization requirements.
Eriserdi Mollaymeri   +2 more
wiley   +1 more source

Microprocessor-based single particle calibration of scintillation counter [PDF]

open access: yes
A microprocessor-base set-up is fabricated and tested for the single particle calibration of the plastic scintillator. The single particle response of the scintillator is digitized by an A/D converter, and a 8085 A based microprocessor stores the pulse ...
Mazumdar, G. K. D., Pathak, K. M.
core   +1 more source

Deep Blue Fluorescent OLEDs Based on a Solution and Solid‐State Emitter (SSSE): Investigations with 2‐Phenyl‐Naphthoxazole

open access: yesAdvanced Electronic Materials, EarlyView.
The blue fluorescent molecule 2‐phenyl‐naphth[2,3‐d]oxazole (Nzx) exhibits strong emission in both solution and solid states. Such behavior, referred to as solution and solid‐state emission (SSSE), makes Nzx a promising candidate for optoelectronic applications. This study highlights the potential of Nzx for the development of stable and efficient near
Houssein El Housseiny   +5 more
wiley   +1 more source

Cathode Upcycling for Direct Recycling of Lithium‐Ion Batteries Using a Precipitation Approach

open access: yesAdvanced Energy Materials, EarlyView.
To improve the circularity of lithium‐ion batteries, researchers develop a low‐cost method to increase the energy density of directly recycled cathodes. Through a precipitation process, low‐nickel materials are converted to high‐nickel compositions. Using synchrotron 3D X‐ray imaging and diffraction, they track nickel diffusion during high‐temperature ...
Eva Allen   +13 more
wiley   +1 more source

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