Results 21 to 30 of about 16,466,590 (349)
American Journal of Physics, 2001 v3 adds discussion of "rephasing", and adds a figure. v4 adds references to the early history of negative group velocity, and adds a figure; thanks to Alex ...
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Enhanced group velocity in metamaterials [PDF]
Journal of Physics A: Mathematical and General, 2003 The Bruggeman formalism is implemented to estimate the refractive index of an isotropic, dielectric, homogenized composite medium (HCM). Invoking the well--known Hashin--Shtrikman bounds, we demonstrate that the group velocity in certain HCMs can exceed the group velocities in their component materials.
Mackay, Tom G., Lakhtakia, Akhlesh
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Adiabatic frequency shifting in epsilon-near-zero materials: the role of group velocity
Optica, 2019 We investigate adiabatic frequency conversion using epsilon near zero (ENZ) materials and show that while the maximum frequency conversion for a given change of permittivity does not exhibit increase in the vicinity of {\epsilon}=0 condition.
J. Khurgin +11 more
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Compensation for Group Velocity of Polychromatic Wave Measurement in Dispersive Medium
Applied Sciences, 2017 The estimation of instantaneous frequency (IF) method is introduced to compensate for the group velocity of electromagnetic wave in dispersive medium.
Seung Jin Chang, Seung-Il Moon
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Slow Group Velocity and Cherenkov Radiation [PDF]
Physical Review Letters, 2001 Physical Review ...
Carusotto I +3 more
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Group dynamics and wave resonances in a narrow gap: modes and reduced group velocity
Journal of Fluid Mechanics, 2019 The spatial and temporal structure of the resonant fluid response in a narrow gap (the so-called gap resonance) between two identical fixed boxes is investigated experimentally.
Wenhua Zhao +4 more
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Applied Physics Letters, 2018 We propose a method to simultaneously determine the thickness of an isotropic plate together with the longitudinal and shear elastic wave velocities of its material.
C. Grünsteidl +3 more
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Applied Sciences, 2021 Guided waves have immense potential for structural health monitoring applications in numerous industries including aerospace. It is necessary to evaluate guided wave dispersion characteristics, i.e., group velocity and phase velocity profiles, for using ...
Muhammad Khalid Malik +2 more
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Group velocity in noncommutative spacetime [PDF]
Journal of Cosmology and Astroparticle Physics, 2003 13 pages ...
Giovanni Amelino Camelia +2 more
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