Requisite ingredients for thermal rectification

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dc.creatorEmmanuel Araújo Pereira
dc.date.accessioned2021-08-03T17:58:19Z
dc.date.accessioned2025-09-09T00:04:22Z
dc.date.available2021-08-03T17:58:19Z
dc.date.issued2017-07-10
dc.description.sponsorshipCNPq - Conselho Nacional de Desenvolvimento Científico e Tecnológico
dc.identifier.doihttps://doi.org/10.1103/PhysRevE.96.012114
dc.identifier.issn2470-0053
dc.identifier.urihttps://hdl.handle.net/1843/37211
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofPhysical Review E
dc.rightsAcesso Restrito
dc.subjectRetificação
dc.subjectCalor
dc.subject.otherThermal rectification
dc.subject.otherHeat
dc.titleRequisite ingredients for thermal rectification
dc.typeArtigo de periódico
local.citation.epage012114-7
local.citation.issue1
local.citation.spage012114-1
local.citation.volume96
local.description.resumoThe present work is devoted to an analytical investigation of the thermal rectification mechanism. More specifically, we attempt to find the requisite ingredients for such a phenomenon to occur. Starting from the linearization of the time evolution equations of anharmonic chains of oscillators, we propose some effective harmonic toy models with a potential that is dependent on temperature, and we investigate their steady heat currents. This unusual temperature-dependent potential is the footprint of nonlinearity in the final effective linear model. The approach is not restricted to any particular regime of heat transport. Our results show that thermal rectification holds in a system if it has asymmetric parameters related to its own structure, e.g., a graded particle mass distribution and some other parameters or features dependent on the inner temperatures that change as we invert the baths at the boundaries. The description of rectification in these simplified models, with minimal ingredients, shows that it is a ubiquitous phenomenon, and it may serve as a guide for further research.
local.publisher.countryBrasil
local.publisher.departmentICX - DEPARTAMENTO DE FÍSICA
local.publisher.initialsUFMG
local.url.externahttps://journals.aps.org/pre/abstract/10.1103/PhysRevE.96.012114

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