Matches in SemOpenAlex for { <https://semopenalex.org/work/W2981319901> ?p ?o ?g. }
Showing items 1 to 71 of
71
with 100 items per page.
- W2981319901 abstract "Toroidal excitations can exist both in matter, as represented by the toroidal multipoles, as well as in free-space in the form of “Flying Doughnuts” [1]. Toroidal multipoles provide significant contributions to the electromagnetic response of matter and together with the conventional electric and magnetic multipoles can lead to non-radiating configurations, termed anapoles. Indeed, anapoles can be formed by a superposition of an electric dipole and a toroidal dipole, which, owing to their identical radiation properties, allow for complete cancellation of radiated electromagnetic fields outside the source. However, although anapoles do not radiate electromagnetic fields, they do act as sources of vector potential (which cannot be eliminated by a change of gauge). On the other hand, Flying Doughnuts are few-cycle electromagnetic pulses with non-trivial spatiotemporal coupling and toroidal configuration of electromagnetic fields that propagate in free-space at the speed of light. They are exact solutions to Maxwell's equations and exhibit strong longitudinal field components along the propagation direction. The spatial and temporal dependence of the Flying Doughnut pulse cannot be separated from one another, which results in a spatially varying frequency spectrum. In particular, the Flying Doughnut pulse exhibits a frequency spectrum that varies across the wavefront with shorter wavelengths localized closer to the center of the pulse and longer wavelengths dominating the outer regions of the pulse. Importantly, this spatial variation remains invariant upon propagation of the pulse, as well as focusing and defocusing, indicating that the Flying Doughnut pulse is isodiffracting. This spatiotemporal coupling in combination with the doughnut-like arrangement of electromagnetic fields, leads to a complex topological structure in the form of spectrally broadband vortices with multiple singularities in both the electric and magnetic fields. Flying Doughnut pulses can interact with matter in unique ways, which result in non-trivial field transformations upon reflection from perfectly conducting and dielectric interfaces. Moreover, the interactions of Flying Doughnut pulses with spherical dielectric particles can lead to the excitation of toroidal resonances and non-radiating configurations (anapoles)." @default.
- W2981319901 created "2019-11-01" @default.
- W2981319901 creator A5008707808 @default.
- W2981319901 creator A5015286829 @default.
- W2981319901 creator A5082546352 @default.
- W2981319901 creator A5091720873 @default.
- W2981319901 date "2019-09-01" @default.
- W2981319901 modified "2023-10-16" @default.
- W2981319901 title "Anapoles and Flying Doughnuts" @default.
- W2981319901 cites W2270244810 @default.
- W2981319901 doi "https://doi.org/10.1109/iceaa.2019.8879277" @default.
- W2981319901 hasPublicationYear "2019" @default.
- W2981319901 type Work @default.
- W2981319901 sameAs 2981319901 @default.
- W2981319901 citedByCount "0" @default.
- W2981319901 crossrefType "proceedings-article" @default.
- W2981319901 hasAuthorship W2981319901A5008707808 @default.
- W2981319901 hasAuthorship W2981319901A5015286829 @default.
- W2981319901 hasAuthorship W2981319901A5082546352 @default.
- W2981319901 hasAuthorship W2981319901A5091720873 @default.
- W2981319901 hasBestOaLocation W29813199012 @default.
- W2981319901 hasConcept C120665830 @default.
- W2981319901 hasConcept C121332964 @default.
- W2981319901 hasConcept C14589660 @default.
- W2981319901 hasConcept C149773537 @default.
- W2981319901 hasConcept C15001198 @default.
- W2981319901 hasConcept C155761240 @default.
- W2981319901 hasConcept C165699331 @default.
- W2981319901 hasConcept C173523689 @default.
- W2981319901 hasConcept C27753989 @default.
- W2981319901 hasConcept C2780167933 @default.
- W2981319901 hasConcept C28843909 @default.
- W2981319901 hasConcept C30475298 @default.
- W2981319901 hasConcept C62520636 @default.
- W2981319901 hasConcept C6260449 @default.
- W2981319901 hasConcept C82706917 @default.
- W2981319901 hasConcept C94915269 @default.
- W2981319901 hasConceptScore W2981319901C120665830 @default.
- W2981319901 hasConceptScore W2981319901C121332964 @default.
- W2981319901 hasConceptScore W2981319901C14589660 @default.
- W2981319901 hasConceptScore W2981319901C149773537 @default.
- W2981319901 hasConceptScore W2981319901C15001198 @default.
- W2981319901 hasConceptScore W2981319901C155761240 @default.
- W2981319901 hasConceptScore W2981319901C165699331 @default.
- W2981319901 hasConceptScore W2981319901C173523689 @default.
- W2981319901 hasConceptScore W2981319901C27753989 @default.
- W2981319901 hasConceptScore W2981319901C2780167933 @default.
- W2981319901 hasConceptScore W2981319901C28843909 @default.
- W2981319901 hasConceptScore W2981319901C30475298 @default.
- W2981319901 hasConceptScore W2981319901C62520636 @default.
- W2981319901 hasConceptScore W2981319901C6260449 @default.
- W2981319901 hasConceptScore W2981319901C82706917 @default.
- W2981319901 hasConceptScore W2981319901C94915269 @default.
- W2981319901 hasLocation W29813199011 @default.
- W2981319901 hasLocation W29813199012 @default.
- W2981319901 hasOpenAccess W2981319901 @default.
- W2981319901 hasPrimaryLocation W29813199011 @default.
- W2981319901 hasRelatedWork W1608124417 @default.
- W2981319901 hasRelatedWork W1971001556 @default.
- W2981319901 hasRelatedWork W1975968841 @default.
- W2981319901 hasRelatedWork W2006314592 @default.
- W2981319901 hasRelatedWork W2012825345 @default.
- W2981319901 hasRelatedWork W2048640597 @default.
- W2981319901 hasRelatedWork W2055178897 @default.
- W2981319901 hasRelatedWork W2349270289 @default.
- W2981319901 hasRelatedWork W2391548702 @default.
- W2981319901 hasRelatedWork W2981319901 @default.
- W2981319901 isParatext "false" @default.
- W2981319901 isRetracted "false" @default.
- W2981319901 magId "2981319901" @default.
- W2981319901 workType "article" @default.