Elastocaloric effect in graphene kirigami

Ribeiro Júnior, Luiz Antônio; Pereira Júnior, Marcelo Lopes; Fonseca, Alexandre F.

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Campo DC	Valor	Lengua/Idioma
dc.contributor.author	Ribeiro Júnior, Luiz Antônio	-
dc.contributor.author	Pereira Júnior, Marcelo Lopes	-
dc.contributor.author	Fonseca, Alexandre F.	-
dc.date.accessioned	2024-07-16T11:14:24Z	-
dc.date.available	2024-07-16T11:14:24Z	-
dc.date.issued	2023-07-21	-
dc.identifier.citation	RIBEIRO JUNIOR, Luiz A.; PEREIRA JUNIOR, Marcelo L.; FONSECA, Alexandre F. Elastocaloric effect in graphene kirigami. Nano Letters, [S. l.], v. 23, n. 18, 8801-8807, 2023. DOI: https://doi.org/10.1021/acs.nanolett.3c02260.	pt_BR
dc.identifier.uri	http://repositorio.unb.br/handle/10482/48895	-
dc.language.iso	eng	pt_BR
dc.publisher	American Chemical Society	pt_BR
dc.rights	Acesso Restrito	pt_BR
dc.title	Elastocaloric effect in graphene kirigami	pt_BR
dc.type	Artigo	pt_BR
dc.subject.keyword	Grafeno Kirigami	pt_BR
dc.subject.keyword	Coeficiente de desempenho	pt_BR
dc.subject.keyword	Dinâmica molecular	pt_BR
dc.identifier.doi	https://doi.org/10.1021/acs.nanolett.3c02260	pt_BR
dc.relation.publisherversion	https://pubs.acs.org/doi/10.1021/acs.nanolett.3c02260?ref=PDF	pt_BR
dc.description.abstract1	Kirigami, a traditional Japanese art of paper cutting, has recently been explored for its elastocaloric effect (ECE) in kirigami-based materials (KMs), where an applied strain induces temperature changes. Importantly, the feasibility of a nanoscale graphene kirigami monolayer was experimentally demonstrated. Here, we investigate the ECE in GK representing the thinnest possible KM to better understand this phenomenon. Through molecular dynamics simulations, we analyze the temperature change and coefficient of performance (COP) of GK. Our findings reveal that while GKs lack the intricate temperature changes observed in macroscopic KMs, they exhibit a substantial temperature change of approximately 9.32 K (23 times higher than that of macroscopic KMs, which is about 0.4 K) for heating and −3.50 K for cooling. Furthermore, they demonstrate reasonable COP values of approximately 1.57 and 0.62, respectively. It is noteworthy that the one-atom-thick graphene configuration prevents the occurrence of the complex temperature distribution observed in macroscopic KMs.	pt_BR
dc.identifier.orcid	https://orcid.org/0000-0001-8413-9744	pt_BR
dc.contributor.affiliation	University of Brasília, Institute of Physic	pt_BR
dc.contributor.affiliation	University of Brasília, Institute of Physics, Computational Materials Laboratory, LCCMat	pt_BR
dc.contributor.affiliation	University of Brasília, Faculty of Technology, Department of Electrical Engineering	pt_BR
dc.contributor.affiliation	University of Campinas, Gleb Wataghin Institute of Physics, Applied Physics Department	pt_BR
dc.description.unidade	Faculdade de Tecnologia (FT)	pt_BR
dc.description.unidade	Departamento de Engenharia Elétrica (FT ENE)	pt_BR
dc.description.unidade	Instituto de Física (IF)	pt_BR
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