Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids
In this Letter, we aim at making nanoparticles embedded in a host semiconductor with a size comparable to electronic wavelengths “invisible” to the electron transport. Inspired by the recent progress made in optics and working within the framework of the expansion of partial waves, we demonstrate th...
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| Format: | Article |
| Language: | en_US |
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American Physical Society
2013
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| Online Access: | http://hdl.handle.net/1721.1/75819 https://orcid.org/0000-0002-0898-0803 https://orcid.org/0000-0002-3968-8530 |
| _version_ | 1811089590554984448 |
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| author | Liao, Bolin Zebarjadi, Mona Esfarjani, Keivan Chen, Gang |
| author2 | Massachusetts Institute of Technology. Department of Mechanical Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Mechanical Engineering Liao, Bolin Zebarjadi, Mona Esfarjani, Keivan Chen, Gang |
| author_sort | Liao, Bolin |
| collection | MIT |
| description | In this Letter, we aim at making nanoparticles embedded in a host semiconductor with a size comparable to electronic wavelengths “invisible” to the electron transport. Inspired by the recent progress made in optics and working within the framework of the expansion of partial waves, we demonstrate that the opposite effects imposed by potential barriers and wells of a core-shell nanoparticle on the phase shifts associated with the scattered electron wave could make the scattering cross section of the first two partial waves vanish simultaneously. We show that this is sufficient to cloak the nanoparticle from being detected by electrons with specific energy in the sense that a total scattering cross section smaller than 0.01% of the physical cross section can be obtained and a 4 orders of magnitude difference in the total scattering cross section can be presented within an energy range of only 40 meV, indicating possible applications of the “electron cloaks” as novel electronic switches and sensors, and in efficient energy harvesting and conversion technologies. |
| first_indexed | 2024-09-23T14:21:37Z |
| format | Article |
| id | mit-1721.1/75819 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T14:21:37Z |
| publishDate | 2013 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/758192022-09-29T08:55:39Z Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids Liao, Bolin Zebarjadi, Mona Esfarjani, Keivan Chen, Gang Massachusetts Institute of Technology. Department of Mechanical Engineering Liao, Bolin Zebarjadi, Mona Esfarjani, Keivan Chen, Gang In this Letter, we aim at making nanoparticles embedded in a host semiconductor with a size comparable to electronic wavelengths “invisible” to the electron transport. Inspired by the recent progress made in optics and working within the framework of the expansion of partial waves, we demonstrate that the opposite effects imposed by potential barriers and wells of a core-shell nanoparticle on the phase shifts associated with the scattered electron wave could make the scattering cross section of the first two partial waves vanish simultaneously. We show that this is sufficient to cloak the nanoparticle from being detected by electrons with specific energy in the sense that a total scattering cross section smaller than 0.01% of the physical cross section can be obtained and a 4 orders of magnitude difference in the total scattering cross section can be presented within an energy range of only 40 meV, indicating possible applications of the “electron cloaks” as novel electronic switches and sensors, and in efficient energy harvesting and conversion technologies. United States. Dept. of Energy. Office of Basic Energy Sciences (Award DE-FG02-09ER46577) 2013-01-02T18:10:26Z 2013-01-02T18:10:26Z 2012-09 2012-06 Article http://purl.org/eprint/type/JournalArticle 0031-9007 1079-7114 http://hdl.handle.net/1721.1/75819 Liao, Bolin et al. “Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids.” Physical Review Letters 109.12 (2012). © 2012 American Physical Society https://orcid.org/0000-0002-0898-0803 https://orcid.org/0000-0002-3968-8530 en_US http://dx.doi.org/10.1103/PhysRevLett.109.126806 Physical Review Letters 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 | Liao, Bolin Zebarjadi, Mona Esfarjani, Keivan Chen, Gang Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids |
| title | Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids |
| title_full | Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids |
| title_fullStr | Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids |
| title_full_unstemmed | Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids |
| title_short | Cloaking Core-Shell Nanoparticles from Conducting Electrons in Solids |
| title_sort | cloaking core shell nanoparticles from conducting electrons in solids |
| url | http://hdl.handle.net/1721.1/75819 https://orcid.org/0000-0002-0898-0803 https://orcid.org/0000-0002-3968-8530 |
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