Casimir forces exerted by epsilon-near-zero hyperbolic materials
The Casimir force exerted on a gold dipolar nanoparticle by a fnite-thickness slab of the natural hyperbolic material namely, the ortorhombic crystalline modifcation of boron nitride, is investigated. The main contribution to the force originates from the TM-polarized waves, for frequencies at which...
| Authors: | ; |
|---|---|
| Format: | Article |
| Status: | Published version |
| Publication date: | 2020 |
| Country: | España |
| Institution: | Universidad de Barcelona |
| Repository: | Dipòsit Digital de la UB |
| OAI Identifier: | oai:diposit.ub.edu:2445/177254 |
| Online Access: | https://hdl.handle.net/2445/177254 |
| Access Level: | Open access |
| Keyword: | Teoria quàntica de camps Quantum field theory |
| _version_ | 1878731358367383552 |
|---|---|
| author | Nefedov, Igor S. |
| author2 | Rubí Capaceti, José Miguel |
| author2_role | author |
| author_browse | Nefedov, Igor S. Rubí Capaceti, José Miguel |
| author_facet | Nefedov, Igor S. Rubí Capaceti, José Miguel |
| author_role | author |
| collection | Dipòsit Digital de la UB |
| description | The Casimir force exerted on a gold dipolar nanoparticle by a fnite-thickness slab of the natural hyperbolic material namely, the ortorhombic crystalline modifcation of boron nitride, is investigated. The main contribution to the force originates from the TM-polarized waves, for frequencies at which the parallel and perpendicular components of the dielectric tensor reach minimal values. These frequencies difer from those corresponding to the Lorentzian resonances for the permittivity components. We show that when the slab is made of an isotropic epsilon-near-zero absorbing material the force on the nanoparticle is larger than that induced by a hyperbolic material, for similar values of the characteristic parameters. This fact makes these materials optimal in the use of Casimir's forces for nanotechnology applications. |
| eu_rights_str_mv | openAccess |
| format | article |
| id | ES_2df4f76c25bec7dfa2d2d2c1eda002f9 |
| institution | Universidad de Barcelona |
| instname_str | Universidad de Barcelona |
| network_acronym_str | ES |
| network_name_str | España |
| oai_identifier_str | oai:diposit.ub.edu:2445/177254 |
| publishDate | 2020 |
| publishDateSort | 2020 |
| publisher | Nature Publishing Group |
| publisherStr | Nature Publishing Group |
| reponame_str | Dipòsit Digital de la UB |
| spelling | Casimir forces exerted by epsilon-near-zero hyperbolic materials Nefedov, Igor S. Rubí Capaceti, José Miguel Teoria quàntica de camps Quantum field theory The Casimir force exerted on a gold dipolar nanoparticle by a fnite-thickness slab of the natural hyperbolic material namely, the ortorhombic crystalline modifcation of boron nitride, is investigated. The main contribution to the force originates from the TM-polarized waves, for frequencies at which the parallel and perpendicular components of the dielectric tensor reach minimal values. These frequencies difer from those corresponding to the Lorentzian resonances for the permittivity components. We show that when the slab is made of an isotropic epsilon-near-zero absorbing material the force on the nanoparticle is larger than that induced by a hyperbolic material, for similar values of the characteristic parameters. This fact makes these materials optimal in the use of Casimir's forces for nanotechnology applications. Nature Publishing Group https://hdl.handle.net/2445/177254 |
| spellingShingle | Casimir forces exerted by epsilon-near-zero hyperbolic materials Nefedov, Igor S. Teoria quàntica de camps Quantum field theory |
| status_str | publishedVersion |
| title | Casimir forces exerted by epsilon-near-zero hyperbolic materials |
| title_full | Casimir forces exerted by epsilon-near-zero hyperbolic materials |
| title_fullStr | Casimir forces exerted by epsilon-near-zero hyperbolic materials |
| title_full_unstemmed | Casimir forces exerted by epsilon-near-zero hyperbolic materials |
| title_short | Casimir forces exerted by epsilon-near-zero hyperbolic materials |
| title_sort | Casimir forces exerted by epsilon-near-zero hyperbolic materials |
| topic | Teoria quàntica de camps Quantum field theory |
| topic_facet | Teoria quàntica de camps Quantum field theory |
| url | https://hdl.handle.net/2445/177254 |