Results 11 to 20 of about 16,466,590 (349)

Microscopic theory of polariton group velocity renormalization [PDF]

open access: yesNature Communications
Cavity exciton-polaritons exhibit ballistic transport and can achieve 100 μm in one picosecond. This ballistic transport significantly enhances mobility compared to that of bare excitons, which often move diffusively and become the bottleneck for energy ...
Wenxiang Ying   +3 more
doaj   +2 more sources

New Surface-Plasmon-Polariton-Like Acoustic Surface Waves at the Interface Between Two Semi-Infinite Media [PDF]

open access: yesArchives of Acoustics, 2022
This paper presents theory of new shear horizontal (SH) acoustic surface waves that propagate along the interface of two semi-infinite elastic half-spaces, one of which is a conventional elastic medium and a second one an elastic metamaterial with a ...
Piotr Kiełczyński
doaj   +1 more source

Ambient Noise Data Processing to Obtain Group Velocity for Subsurface Structure Identification: Preliminary Research in Hululais Geothermal Field, Sumatra, Indonesia

open access: yesJGEET: Journal of Geoscience, Engineering, Environment and Technology, 2023
Hululais area lies in the pull-apart basins of the Ketaun Segment and Musi Segment fault as a part of the Sumatra Fault Zone (SFZ). The boundary normal faults of pull-apart basins play an important role as major discharge zones for geothermal fluid ...
Tavip Dwikorianto   +3 more
doaj   +1 more source

Enhancement of Low‐k Spin‐Wave Transmission Efficiency with a Record‐High Group Velocity in YIG/Nonmagnetic Metal Heterojunctions

open access: yesAdvanced Electronic Materials, 2023
Improvement of transmission efficiency of spin waves in magnonic devices is crucial for high‐efficiency magnon‐based operations. However, existing techniques for enhancing spin‐wave detection signals, which either improve waveguide material quality or ...
Jiapeng Xu   +9 more
doaj   +1 more source

Modeling semiconducting silicene nanostrips: electronics and THz plasmons

open access: yesFrontiers 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
doaj   +1 more source

Global distributions of age- and sex-related arterial stiffness: systematic review and meta-analysis of 167 studies with 509,743 participants [PDF]

open access: yes, 2023
Background: Arterial stiffening is central to the vascular ageing process and a powerful predictor and cause of diverse vascular pathologies and mortality.
Kiechl S   +7 more
core   +1 more source

Frequency spectrum and group velocities of acoustic phonons in PbI2 nanofilms

open access: yesФізика 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
doaj   +1 more source

Tomographic Image of Shear Wave Structure of NE India Based on Analysis of Rayleigh Wave Data

open access: yesFrontiers 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
doaj   +1 more source

On negative effective mass and negative group velocity in anharmonic seismic metamaterials

open access: yesEPJ 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
doaj   +1 more source

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