Results 11 to 20 of about 350,044 (263)
High-speed electro-optic modulator with group velocity matching on silicon substrate [PDF]
Frontiers in Bioengineering and BiotechnologyElectro-optic modulators with low driving voltage and wide bandwidth are critical for advanced analog and digital communication systems. To achieve high-speed thin-film lithium niobate (TFLN) electro-optic modulators on silicon substrates, this work ...
Yingbo Liu +9 more
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Investigating group-velocity-tunable propagation-invariant optical wave-packets [PDF]
Scientific Reports, 2022 The group-velocity of the propagation-invariant optical wave-packet generated by the conical superposition can be controlled by introducing well-designed arbitrarily-axisymmetric pulse-front deformation, which permits realizing superluminal, subluminal ...
Zhaoyang Li +3 more
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ON THE GROUP VELOCITY OF WHISTLING ATMOSPHERICS
Solar-Terrestrial Physics, 2021 The dynamic spectrum of a whistling atmospheric is a signal of falling tone, and the group delay time of the signal as a function of frequency is formed as a result of propagation of a broadband pulse in a medium (magnetospheric plasma) with a quadratic ...
A.V. Guglielmi, B.I. Klain, A.S. Potapov
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Imaging gigahertz zero-group-velocity Lamb waves [PDF]
Nature Communications, 2019 Zero-group-velocity Lamb waves, which are surface waves with reduced losses and high Q factor, have many potential applications. The authors image such waves in 2 dimensions, and in the GHz range, with a bilayer using a time-resolved imaging technique ...
Qingnan Xie +7 more
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Microscopic theory of polariton group velocity renormalization [PDF]
Nature CommunicationsCavity 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
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New Surface-Plasmon-Polariton-Like Acoustic Surface Waves at the Interface Between Two Semi-Infinite Media [PDF]
Archives 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
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JGEET: 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
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Advanced 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
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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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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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