Results 81 to 90 of about 1,930,267 (286)

A Time Independent Energy Estimate for Outgoing Scalar Waves in the Kerr Geometry

, 2008
The Cauchy problem for the scalar wave equation in the Kerr geometry is considered, with initial data which is smooth and compactly supported outside the event horizon. A time-independent energy estimate for the outgoing wave is obtained.
FELIX FINSTER, Finster F., Finster F., JOEL SMOLLER, Penrose R., Starobinsky A. A., Zel'dovich Ya. B.   +6 more
core   +1 more source

Synchrotron Radiation for Quantum Technology

Advanced Functional Materials, EarlyView.
Materials and interfaces underpin quantum technologies, with synchrotron and FEL methods key to understanding and optimizing them. Advances span superconducting and semiconducting qubits, 2D materials, and topological systems, where strain, defects, and interfaces govern performance.
Oliver Rader, Sakura Pascarelli, Klaus Attenkofer, Anna A. Makarova, Karsten Holldack, Kai Rossnagel, Kristiaan Temst, George Kourousias, Stefano Carretta, Caterina Biscari, Helmut Dosch   +10 more
wiley   +1 more source

Photoactivation of NV Centers in Diamond via Continuous Wave Laser Illumination of Shallow As‐Implanted Nitrogen

Advanced Functional Materials, EarlyView.
This study demonstrates an alternative method of creating charge‐stable negatively charged nitrogen vacancy (NV−) centers close to the diamond surface without high‐temperature annealing. By illuminating nitrogen‐implanted regions with a continuous‐wave 405 nm laser, NV− centers are induced, exhibiting electron spin coherence properties suitable for ...
Jens Fuhrmann, Christoph Findler, Michael Olney‐Fraser, Lev Kazak, Fedor Jelezko   +4 more
wiley   +1 more source

Energy Flux Method for Wave Energy Converters

Energies
Hydrodynamic tools reveal information as to the behaviour of a device in the presence of waves but provide little information on how to improve or optimise the device.
Gabriel Thomas Scarlett, James Cameron McNatt, Alan Henry, Abel Arredondo-Galeana   +3 more
doaj   +1 more source

A Review of Offshore Wave Energy Extraction System

Advances in Mechanical Engineering, 2013
Offshore wave energy can be easily predicted and is proved to be much better than other forms of ocean energy such as shoreline wave, near-shore wave, and tides.
Zhongxian Chen, Haitao Yu, Minqiang Hu, Gaojun Meng, Cheng Wen   +4 more
doaj   +1 more source

Determination of the right wave by empirical statistics: The wave energy resource assessment and the investigation of existing marine and coastal potential compatibility

Journal of Ocean Engineering and Science, 2016
In competition with other resources, ocean waves provide abundant supply of clean, safe, and reliable energy, but this source needs to be made an economical source for natural energy harvest. For this purpose, a wave energy conversion device is developed
C.Y.J. Chen
doaj   +1 more source

The influence of structure disorder on mean atomic momentum fluctuations and a spin-wave spectrum

, 1995
The relation between atomic momenta fluctuations and density fluctuations is obtained in frames of mean-field approximation. Using two-time temperature Green functions within Tyablikov approximation the equations for spin excitation energy and damping ...
Kuliy, T., Tkachuk, V., Vakarchuk, I.
core   +1 more source

Atomic Size Misfit for Electrocatalytic Small Molecule Activation

Advanced Functional Materials, EarlyView.
This review explores the application and mechanisms of atomic size misfit in catalysis for small molecule activation, focusing on how structural defects and electronic properties can effectively lower the energy barriers of chemical bonds in molecules like H2O, CO2, and N2.
Ping Hong, Changfan Xu, Huaping Zhao, Yong Lei   +3 more
wiley   +1 more source

Hyperspherical partial wave calculation for double photoionization of the helium atom at 20 eV excess energy

, 2003
Hyperspherical partial wave approach has been applied here in the study of double photoionization of the helium atom for equal energy sharing geometry at 20 eV excess energy. Calculations have been done both in length and velocity gauges and are found to
Achler M, Bolognesi P, Brauner M, Briggs J S, Bräuning H, Burke P G, Chandrashekhar S, Choi B H, Colgan J, Cvejanovic S, Das J N, Das J N, Das J N, Das J N, Das J N, Dawson C, Dörner R, Feagin J M, Feagin J M, Fletcher R, Hart J F, Huetz A, J N Das, K Chakrabarti, Kheifets A K, Kheifets A S, Kheifets A S, Kheifets A S, Kheifets A S, Lin C D, Lucey S P, Malegat L, Maulbetsch F, Maulbetsch F, Pekeris C L, Pont M, Pont M, Pont M, S Paul, Samson J A R, Whelitz R   +40 more
core   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source