Results 231 to 240 of about 10,332,665 (292)

Group Velocity and the Propagation of Disturbances in Dispersive Media

The Annals of Mathematics, 1925
openaire   +2 more sources

Dust dispersion and prevention in deep concave open-pit coal mines. [PDF]

Sci Rep
Long Y, Song Z, Wu L, Wen Y.
europepmc   +1 more source

Numerical study on the impact of coal fractures on seismic wave dispersion and attenuation: anisotropic WIFF effects. [PDF]

Sci Rep
Li B, Zou G, Wang J, Chen H, Zhu G.
europepmc   +1 more source

Performance of Multi-Gradient Biomimetic POSS-Toughened CFRP Laminates with a Pearl-Inspired Hard-Soft Interfacial Architecture. [PDF]

Polymers (Basel)
Xiang G, Sun S, Wang Y, Jia B, Li C, Qin M.   +5 more
europepmc   +1 more source

Perpendicular Magnetic Anisotropy in Thin Films Enables Extraordinary Spin-Wave Phenomena: Anti-Larmor Precession, Negative Reflection and Refraction, Multireflection and Multirefraction. [PDF]

ACS Appl Mater Interfaces
Leśniewski N, Dadoenkova Y, Bentivegna FFL, Gruszecki P.   +3 more
europepmc   +1 more source

Study on Preparation of Zinc Pyrithione Ultrafine Particles via Rapid Precipitation in Microchannel Reactor. [PDF]

Molecules
Li GE, Liu Y.
europepmc   +1 more source

Dispersion, group velocity, and multisymplectic discretizations

Mathematics and Computers in Simulation, 2009
The authors consider the dispersive properties of multisymplectic discretization of linear wave and the sine Gordon equations. In particular a leapfrog in space and time scheme and the Preissman box scheme is considered. They find the numerical dispersions are monotonic and that the sign of the group velocity is preserved but for the nonsymplectic ...
Schober, C. M., Wlodarczyk, T. H.
core   +4 more sources

Consideration of dispersion and group velocity dispersion in the determination of velocities of electromagnetic propagation [PDF]

SPIE Proceedings, 2010
Electromagnetic (EM) propagation velocities play an important role in the determination of power and energy flow in materials and interfaces. It is well known that group and phase velocities need to be in opposition in order to achieve negative refractive index.
Chatterjee, Monish Ranjan, Banerjee, Partha P.   +1 more
core   +3 more sources

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Raman solitons with group velocity dispersion

Physical Review E, 2006
We consider the coupled propagation of the pump and Stokes waves in a Raman active medium accounting for the group velocity walk off and group velocity dispersion. Interplay of the Raman coherence and the dispersion can lead to the formation of a complete band gap in the spectrum of linear waves consisting of the two consecutive subgaps located at ...
D V, Skryabin, A V, Yulin
openaire   +2 more sources

Group-velocity dispersion in photonic crystal fibers

Optics Letters, 1998
The dispersion properties of photonic crystal fibers are calculated by expression of the modal field as a sum of localized orthogonal functions. Even simple designs of these fibers can yield zero dispersion at wavelengths shorter than 1.27 mum when the fibers are single mode, or a large normal dispersion that is suitable for dispersion compensation at ...
D, Mogilevtsev, T A, Birks, P S, Russell
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