Zobrazeno 1 - 10
of 17
pro vyhledávání: '"Gregory J. Chaplain"'
Autor:
Gregory J. Chaplain, Jacopo M. De Ponti, Andrea Colombi, Rafael Fuentes-Dominguez, Paul Dryburg, Don Pieris, Richard J. Smith, Adam Clare, Matt Clark, Richard V. Craster
Publikováno v:
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Umklapp scattering, an effect that has been conventionally studied in phonon systems in quantum transport, is studied here in an elastic system. The authors demonstrate mode conversion from surface Rayleigh waves into bulk waves that have uniquely tu
Externí odkaz:
https://doaj.org/article/75e74894a8f34db5b8f2bef60495a1b6
Autor:
Jacopo M. De Ponti, Luca Iorio, Gregory J. Chaplain, Alberto Corigliano, Richard V. Craster, Raffaele Ardito
Precise manipulation of the direction and re-direction of vibrational wave energy is a key demand in wave physics and engineering. We consider the paradigm of a finite frame-like structure and the requirement to channel energy away from critical regi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::446d75a25b4213756a7693de141df34e
http://arxiv.org/abs/2210.00919
http://arxiv.org/abs/2210.00919
Autor:
Gregory J. Chaplain, Mehul P. Makwana
Publikováno v:
Scientific Reports, Vol 9, Iss 1, Pp 1-16 (2019)
Scientific Reports
Scientific Reports
Strategically combining four structured domains creates the first ever three-way topological energy-splitter; remarkably, this is only possible using a square, or rectangular, lattice, and not the graphene-like structures more commonly used in valley
Scholte modes that are localized between a submerged axisymmetric structured elastic plate and surrounding fluid can undergo mode conversion via Umklapp diffraction into radiative modes; this radiative response is verified by experiments that show fo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ebe78708c5fd4f5c9fbb843358895ef2
http://hdl.handle.net/10044/1/94543
http://hdl.handle.net/10044/1/94543
Publikováno v:
Journal of Applied Physics
The phenomenon of selective diffraction is extended to in-plane elastic waves and we design surface corrugated periodic laminates that incorporate crystal momentum transfer which, due to the rich physics embedded within the vector elastic system, res
Publikováno v:
Physical Review Applied, 14 (5)
Physical Review Applied
Physical Review Applied
We amalgamate two fundamental designs from distinct areas of wave control in physics, and place them in the setting of elasticity. Graded elastic metasurfaces, so-called metawedges, are combined with the now classical Su-Schrieffer-Heeger (SSH) model
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0b1589c76b9bf574b15297a09138e1c4
https://hdl.handle.net/20.500.11850/452845
https://hdl.handle.net/20.500.11850/452845
Important distinctions are made between two related wave control mechanisms that act to spatially separate frequency components; these so-called rainbow mechanisms either slow or reverse guided waves propagating along a graded line array. We demonstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::978659815f27f5e58035af13fc8364d1
http://hdl.handle.net/10044/1/78908
http://hdl.handle.net/10044/1/78908
Publikováno v:
155430 – 9
155430 – 1
Physical Review B
155430 – 1
Physical Review B
We design ultra-thin, entirely flat, dielectric lenses using crystal momentum transfer, so-called Umklapp processes, achieving the required wave control for a new mechanism of flat lensing; physically, these lenses take advantage of abrupt changes in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fa704832302b8fbad53d69296d9d3a58
http://hdl.handle.net/10044/1/79240
http://hdl.handle.net/10044/1/79240
Autor:
Matt Clark, Gregory J. Chaplain, Paul Dryburg, Adam T. Clare, Don Pieris, Richard V. Craster, Andrea Colombi, Richard J. Smith, Rafael Fuentes-Domínguez, Jacopo M. De Ponti
Publikováno v:
Nature Communications
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Nature Communications, 11 (1)
Nature Communications, Vol 11, Iss 1, Pp 1-6 (2020)
Nature Communications, 11 (1)
Elastic waves guided along surfaces dominate applications in geophysics, ultrasonic inspection, mechanical vibration, and surface acoustic wave devices; precise manipulation of surface Rayleigh waves and their coupling with polarised body waves prese
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::82e31f000ea7c4981b61e186393e2528
http://hdl.handle.net/11311/1141790
http://hdl.handle.net/11311/1141790
Autor:
Christoph Englert, Dimitris Georgantzis Garcia, Gregory J. Chaplain, Johannes Courtial, Jakub Bělín, Tomáš Tyc
Publikováno v:
Optica
Not only do curved spaces fascinate scientists and non-scientists, but they are also at the heart of general relativity and modern theories of quantum gravity. Optical systems can provide models for the wave and quantum behavior of curved spaces. Her
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b94b85aba6dabda4e281b0aa6d79b142
https://eprints.gla.ac.uk/206119/7/206119.pdf
https://eprints.gla.ac.uk/206119/7/206119.pdf