Modeling semiconducting silicene nanostrips: electronics and THz plasmons
Frontiers in Physics, 2023 Silicene nanostrips (SiNSs) have garnered significant attention due to their remarkable physical properties, making them an ideal candidate for numerous electronics and plasmonics applications.
Talia Tene +6 more
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Frequency spectrum and group velocities of acoustic phonons in PbI2 nanofilms
Фізика і хімія твердого тіла, 2022 Using the elastic continuum approach, an energy spectrum and spectral dependences of a group velocities of confined acoustic phonons in planar quasi-two-dimensional nanostructures (nanofilms) of hexagonal symmetry of the 2H-PbI2 type were studied by ...
Ivan Petryk +2 more
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Tomographic Image of Shear Wave Structure of NE India Based on Analysis of Rayleigh Wave Data
Frontiers in Earth Science, 2021 The major scientific purpose of this work is to evaluate the geodynamic processes involved in the development of tectonic features of NE India and its surroundings. In this work, we have obtained tomographic images of the crust and uppermost mantle using
Amit Kumar +4 more
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On negative effective mass and negative group velocity in anharmonic seismic metamaterials
EPJ Applied Metamaterials, 2022 In this work, an anharmonic mass-in-mass system that can be employed as a nonlinear seismic metamaterial is represented as an equivalent anharmonic mass-spring system via an effective medium approach.
Zivieri Roberto
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Poynting vector, energy density and energy velocity in anomalous dispersion medium [PDF]
, 2001 The Poynting vector, energy density and energy velocity of light pulses propagating in anomalous dispersion medium (used in WKD-like experiments) are calculated.
A. Dogariu +9 more
core +3 more sources
Direct measurement of superluminal group velocity and of signal velocity in an optical fiber [PDF]
, 2004 We present an easy way of observing superluminal group velocities using a birefringent optical fiber and other standard devices. In the theoretical analysis, we show that the optical properties of the setup can be described using the notion of "weak ...
J. D. Jackson +11 more
core +2 more sources
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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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
openaire +3 more sources
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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Experimental verification of stress-wave bands and negative phase velocity in layered media [PDF]
Theoretical and Applied Mechanics, 2011 Based on a robust numerical method for calculation of band structure for stress-waves in heterogeneous media, a layered composite was designed and fabricated.
Amirkhizi Alireza V., Nemat-Nasser Sia
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