Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium
Heat radiation and near-field radiative heat transfer can be strongly manipulated by adjusting geometrical shapes, optical properties, or the relative positions of the objects involved. Typically, these objects are considered as embedded in vacuum. By applying the methods of fluctuational electrodyn...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2017
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| Online Access: | http://hdl.handle.net/1721.1/107194 |
| _version_ | 1826188635612905472 |
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| author | Müller, Boris Incardone, Roberta Antezza, Mauro Emig, Thorsten Krüger, Matthias |
| author2 | MIT Energy Initiative |
| author_facet | MIT Energy Initiative Müller, Boris Incardone, Roberta Antezza, Mauro Emig, Thorsten Krüger, Matthias |
| author_sort | Müller, Boris |
| collection | MIT |
| description | Heat radiation and near-field radiative heat transfer can be strongly manipulated by adjusting geometrical shapes, optical properties, or the relative positions of the objects involved. Typically, these objects are considered as embedded in vacuum. By applying the methods of fluctuational electrodynamics, we derive general closed-form expressions for heat radiation and heat transfer in a system of N arbitrary objects embedded in a passive nonabsorbing background medium. Taking into account the principle of reciprocity, we explicitly prove the symmetry and positivity of transfer in any such system. Regarding applications, we find that the heat radiation of a sphere as well as the heat transfer between two parallel plates is strongly enhanced by the presence of a background medium. Regarding near- and far-field transfer through a gas like air, we show that a microscopic model (based on gas particles) and a macroscopic model (using a dielectric contrast) yield identical results. We also compare the radiative transfer through a medium like air and the energy transfer found from kinetic gas theory. |
| first_indexed | 2024-09-23T08:02:43Z |
| format | Article |
| id | mit-1721.1/107194 |
| institution | Massachusetts Institute of Technology |
| language | English |
| last_indexed | 2024-09-23T08:02:43Z |
| publishDate | 2017 |
| publisher | American Physical Society |
| record_format | dspace |
| spelling | mit-1721.1/1071942022-09-23T10:31:10Z Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium Müller, Boris Incardone, Roberta Antezza, Mauro Emig, Thorsten Krüger, Matthias MIT Energy Initiative MultiScale Materials Science for Energy and Environment, Joint MIT-CNRS Laboratory Emig, Thorsten Heat radiation and near-field radiative heat transfer can be strongly manipulated by adjusting geometrical shapes, optical properties, or the relative positions of the objects involved. Typically, these objects are considered as embedded in vacuum. By applying the methods of fluctuational electrodynamics, we derive general closed-form expressions for heat radiation and heat transfer in a system of N arbitrary objects embedded in a passive nonabsorbing background medium. Taking into account the principle of reciprocity, we explicitly prove the symmetry and positivity of transfer in any such system. Regarding applications, we find that the heat radiation of a sphere as well as the heat transfer between two parallel plates is strongly enhanced by the presence of a background medium. Regarding near- and far-field transfer through a gas like air, we show that a microscopic model (based on gas particles) and a macroscopic model (using a dielectric contrast) yield identical results. We also compare the radiative transfer through a medium like air and the energy transfer found from kinetic gas theory. 2017-03-06T17:17:42Z 2017-03-06T17:17:42Z 2017-02 2016-10 2017-02-14T18:30:56Z Article http://purl.org/eprint/type/JournalArticle 2469-9950 2469-9969 http://hdl.handle.net/1721.1/107194 Müller, Boris et al. “Many-Body Heat Radiation and Heat Transfer in the Presence of a Nonabsorbing Background Medium.” Physical Review B 95.8 (2017): n. pag. © 2017 American Physical Society en http://dx.doi.org/10.1103/PhysRevB.95.085413 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. American Physical Society application/pdf American Physical Society American Physical Society |
| spellingShingle | Müller, Boris Incardone, Roberta Antezza, Mauro Emig, Thorsten Krüger, Matthias Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| title | Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| title_full | Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| title_fullStr | Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| title_full_unstemmed | Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| title_short | Many-body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| title_sort | many body heat radiation and heat transfer in the presence of a nonabsorbing background medium |
| url | http://hdl.handle.net/1721.1/107194 |
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