Plane-strain waves in nonlinear elastic solids with softening
Sign Up to like & getrecommendations! Published in 2019 at "Wave Motion"
DOI: 10.1016/j.wavemoti.2019.03.002
Abstract: Propagation of elastic waves in damaged media (concrete, rocks) is studied theoretically and numerically. Such materials exhibit a nonlinear behavior, with long-time softening and recovery processes (slow dynamics). A constitutive model combining Murnaghan hyperelasticity with… read more here.
Keywords: elastic solids; strain waves; waves nonlinear; plane strain ... See more keywords
Directed Hypersonic Strain Waves Imaged with Ultrafast Electron Microscopy
Sign Up to like & getrecommendations! Published in 2018 at "Microscopy and Microanalysis"
DOI: 10.1017/s1431927618010048
Abstract: Intense, ultrafast photoexcitation of semiconducting materials produces several discrete but inter-related energy relaxation processes that span large spatial and temporal scales [1]. Initial charge-carrier excitation, and generation of a dense electron-hole plasma, produces hypersonic plasma… read more here.
Keywords: microscopy; hypersonic strain; strain waves; directed hypersonic ... See more keywords
Impact of the terahertz and optical pump penetration depths on generated strain waves temporal profiles in a V2O3 thin film.
Sign Up to like & getrecommendations! Published in 2022 at "Faraday discussions"
DOI: 10.1039/d2fd00013j
Abstract: Triggering new stable macroscopic orders in materials by ultrafast optical or terahertz pump pulses is a difficult challenge, complicated by the interplay between multiscale microscopic mechanisms, and macroscopic excitation profiles in samples. In particular, the… read more here.
Keywords: film; strain waves; pump; optical pump ... See more keywords
Bulk Nonlinear Elastic Strain Waves in a Bilayer Coaxial Cylindrical Rod
Sign Up to like & getrecommendations! Published in 2017 at "Technical Physics"
DOI: 10.1134/s1063784217120118
Abstract: The problem of the propagation of long nonlinear elastic strain waves in a bilayer coaxial cylindrical rod with an ideal contact between the layers has been considered. Expressions for transverse displacements through longitudinal displacements have… read more here.
Keywords: strain waves; elastic strain; rod; waves bilayer ... See more keywords
Ultrafast formation of quantized interlayer vibrations in Bi2Se3 by photoinduced strain waves.
Sign Up to like & getrecommendations! Published in 2022 at "Optics express"
DOI: 10.1364/oe.470310
Abstract: This study comprehensively investigated the coherent lattice dynamics in Bi2Se3 by ultrafast optical pump-probe spectroscopy with tunable near-infrared probe pulses. Sample-thickness- and probe-wavelength-dependent experiments revealed the key role of Bi2Se3 optical property in the generation… read more here.
Keywords: ultrafast formation; photoinduced strain; spectroscopy; formation quantized ... See more keywords