Microstructure effects for Casimir forces in chiral metamaterials
We examine a recent prediction for the chirality dependence of the Casimir force in chiral metamaterials by numerical computation of the forces between the exact microstructures, rather than homogeneous approximations. Although repulsion in the metamaterial regime is rigorously impossible, it is unk...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2011
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| Online Access: | http://hdl.handle.net/1721.1/60910 https://orcid.org/0000-0001-7327-4967 https://orcid.org/0000-0002-7244-3682 |
| _version_ | 1826204428377522176 |
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| author | McCauley, Alexander Patrick Reid, M. T. Homer Zhao, Rongkuo Zhou, Jiangfeng Rossa, F. S. S. Dalvit, D. A. R. Soukoulis, Costas M. Rodriguez-Wong, Alejandro Johnson, Steven G Joannopoulos, John |
| author2 | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies |
| author_facet | Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies McCauley, Alexander Patrick Reid, M. T. Homer Zhao, Rongkuo Zhou, Jiangfeng Rossa, F. S. S. Dalvit, D. A. R. Soukoulis, Costas M. Rodriguez-Wong, Alejandro Johnson, Steven G Joannopoulos, John |
| author_sort | McCauley, Alexander Patrick |
| collection | MIT |
| description | We examine a recent prediction for the chirality dependence of the Casimir force in chiral metamaterials by numerical computation of the forces between the exact microstructures, rather than homogeneous approximations. Although repulsion in the metamaterial regime is rigorously impossible, it is unknown whether a reduction in the attractive force can be achieved through suitable material engineering. We compute the exact force for a chiral bent-cross pattern, as well as forces for an idealized “omega”-particle medium in the dilute approximation and identify the effects of structural inhomogeneity (i.e., proximity forces and anisotropy). We find that these microstructure effects dominate the force for separations where chirality was predicted to have a strong influence. At separations where the homogeneous approximation is valid, in even the most ideal circumstances the effects of chirality are less than 10[superscript −4] of the total force, making them virtually undetectable in experiments. |
| first_indexed | 2024-09-23T12:54:55Z |
| format | Article |
| id | mit-1721.1/60910 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T12:54:55Z |
| publishDate | 2011 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/609102022-10-01T11:51:44Z Microstructure effects for Casimir forces in chiral metamaterials McCauley, Alexander Patrick Reid, M. T. Homer Zhao, Rongkuo Zhou, Jiangfeng Rossa, F. S. S. Dalvit, D. A. R. Soukoulis, Costas M. Rodriguez-Wong, Alejandro Johnson, Steven G Joannopoulos, John Massachusetts Institute of Technology. Institute for Soldier Nanotechnologies Massachusetts Institute of Technology. Department of Mathematics Massachusetts Institute of Technology. Department of Physics Johnson, Steven G. Johnson, Steven G. Joannopoulos, John D. McCauley, Alexander Patrick Rodriguez, Alejandro W. Reid, M. T. Homer We examine a recent prediction for the chirality dependence of the Casimir force in chiral metamaterials by numerical computation of the forces between the exact microstructures, rather than homogeneous approximations. Although repulsion in the metamaterial regime is rigorously impossible, it is unknown whether a reduction in the attractive force can be achieved through suitable material engineering. We compute the exact force for a chiral bent-cross pattern, as well as forces for an idealized “omega”-particle medium in the dilute approximation and identify the effects of structural inhomogeneity (i.e., proximity forces and anisotropy). We find that these microstructure effects dominate the force for separations where chirality was predicted to have a strong influence. At separations where the homogeneous approximation is valid, in even the most ideal circumstances the effects of chirality are less than 10[superscript −4] of the total force, making them virtually undetectable in experiments. 2011-02-09T17:03:00Z 2011-02-09T17:03:00Z 2010-10 2010-09 Article http://purl.org/eprint/type/JournalArticle 1098-0121 1550-235X http://hdl.handle.net/1721.1/60910 McCauley, Alexander P. et al. “Microstructure effects for Casimir forces in chiral metamaterials.” Physical Review B 82.16 (2010): 165108. © 2010 The American Physical Society. https://orcid.org/0000-0001-7327-4967 https://orcid.org/0000-0002-7244-3682 en_US http://dx.doi.org/10.1103/PhysRevB.82.165108 Physical Review B Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Physical Society APS |
| spellingShingle | McCauley, Alexander Patrick Reid, M. T. Homer Zhao, Rongkuo Zhou, Jiangfeng Rossa, F. S. S. Dalvit, D. A. R. Soukoulis, Costas M. Rodriguez-Wong, Alejandro Johnson, Steven G Joannopoulos, John Microstructure effects for Casimir forces in chiral metamaterials |
| title | Microstructure effects for Casimir forces in chiral metamaterials |
| title_full | Microstructure effects for Casimir forces in chiral metamaterials |
| title_fullStr | Microstructure effects for Casimir forces in chiral metamaterials |
| title_full_unstemmed | Microstructure effects for Casimir forces in chiral metamaterials |
| title_short | Microstructure effects for Casimir forces in chiral metamaterials |
| title_sort | microstructure effects for casimir forces in chiral metamaterials |
| url | http://hdl.handle.net/1721.1/60910 https://orcid.org/0000-0001-7327-4967 https://orcid.org/0000-0002-7244-3682 |
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