Multilayer Graphene as an Endoreversible Otto Engine
We examine the performance of a finite-time, endoreversible Otto heat engine with a working medium of monolayer or multilayered graphene subjected to an external magnetic field. As the energy spectrum of multilayer graphene under an external magnetic field depends strongly on the number of layers, s...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-05-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/13/9/1548 |
| _version_ | 1797602063919611904 |
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| author | Nathan M. Myers Francisco J. Peña Natalia Cortés Patricio Vargas |
| author_facet | Nathan M. Myers Francisco J. Peña Natalia Cortés Patricio Vargas |
| author_sort | Nathan M. Myers |
| collection | DOAJ |
| description | We examine the performance of a finite-time, endoreversible Otto heat engine with a working medium of monolayer or multilayered graphene subjected to an external magnetic field. As the energy spectrum of multilayer graphene under an external magnetic field depends strongly on the number of layers, so too does its thermodynamic behavior. We show that this leads to a simple relationship between the engine efficiency and the number of layers of graphene in the working medium. Furthermore, we find that the efficiency at maximum power for bilayer and trilayer working mediums can exceed that of a classical endoreversible Otto cycle. Conversely, a working medium of monolayer graphene displays identical efficiency at maximum power to a classical working medium. These results demonstrate that layered graphene can be a useful material for the construction of efficient thermal machines for diverse quantum device applications. |
| first_indexed | 2024-03-11T04:11:40Z |
| format | Article |
| id | doaj.art-eb1ecbf1e74946fba4f2a68437c0f4c6 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-11T04:11:40Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-eb1ecbf1e74946fba4f2a68437c0f4c62023-11-17T23:27:33ZengMDPI AGNanomaterials2079-49912023-05-01139154810.3390/nano13091548Multilayer Graphene as an Endoreversible Otto EngineNathan M. Myers0Francisco J. Peña1Natalia Cortés2Patricio Vargas3Department of Physics, Virginia Tech, Blacksburg, VA 24061, USADepartamento de Física, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso 11520, ChileInstituto de Alta Investigación, Universidad de Tarapacá, Arica Casilla 7D, ChileDepartamento de Física, CEDENNA, Universidad Técnica Federico Santa María, Av. España 1680, Valparaíso 11520, ChileWe examine the performance of a finite-time, endoreversible Otto heat engine with a working medium of monolayer or multilayered graphene subjected to an external magnetic field. As the energy spectrum of multilayer graphene under an external magnetic field depends strongly on the number of layers, so too does its thermodynamic behavior. We show that this leads to a simple relationship between the engine efficiency and the number of layers of graphene in the working medium. Furthermore, we find that the efficiency at maximum power for bilayer and trilayer working mediums can exceed that of a classical endoreversible Otto cycle. Conversely, a working medium of monolayer graphene displays identical efficiency at maximum power to a classical working medium. These results demonstrate that layered graphene can be a useful material for the construction of efficient thermal machines for diverse quantum device applications.https://www.mdpi.com/2079-4991/13/9/1548magnetic cyclequantum Otto cyclequantum thermodynamicsgraphene |
| spellingShingle | Nathan M. Myers Francisco J. Peña Natalia Cortés Patricio Vargas Multilayer Graphene as an Endoreversible Otto Engine Nanomaterials magnetic cycle quantum Otto cycle quantum thermodynamics graphene |
| title | Multilayer Graphene as an Endoreversible Otto Engine |
| title_full | Multilayer Graphene as an Endoreversible Otto Engine |
| title_fullStr | Multilayer Graphene as an Endoreversible Otto Engine |
| title_full_unstemmed | Multilayer Graphene as an Endoreversible Otto Engine |
| title_short | Multilayer Graphene as an Endoreversible Otto Engine |
| title_sort | multilayer graphene as an endoreversible otto engine |
| topic | magnetic cycle quantum Otto cycle quantum thermodynamics graphene |
| url | https://www.mdpi.com/2079-4991/13/9/1548 |
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