Anomalous acoustic phonons as the physical mechanism behind the adiabatic barocaloric effect on graphene

Autor:	Mario S. Reis, Ning Ma
Jazyk:	angličtina
Rok vydání:	2019
Předmět:	0301 basic medicine Physics Multidisciplinary Condensed matter physics Graphene lcsh:R lcsh:Medicine Acoustic Phonons Article law.invention Strain energy 03 medical and health sciences Entropy (classical thermodynamics) Condensed Matter::Materials Science 030104 developmental biology 0302 clinical medicine law lcsh:Q Total entropy Adiabatic process lcsh:Science 030217 neurology & neurosurgery
Zdroj:	Scientific Reports, Vol 9, Iss 1, Pp 1-6 (2019) Scientific Reports
ISSN:	2045-2322
DOI:	10.1038/s41598-018-36525-7
Popis:	A graphene sheet is able to either heat up or cool down due to a mechanical strain: this is the adiabatic barocaloric effect. In order to understand the physical mechanism behind this effect, we have explored the adiabatic temperature change of the graphene and, for this purpose, we considered two contributions to the total entropy: a lattice entropy (depending on the transversal, longitudinal and anomalous out-of-plane acoustic phonons) and a strain entropy. We found that the adiabatic barocaloric effect only depends on the strain energy and the anomalous acoustic phonons, without terms due to the transversal and longitudinal acoustic phonons.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::aba12c7bd2f86c3a9be521cd110761b4 http://link.springer.com/article/10.1038/s41598-018-36525-7 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
Nepřihlášeným uživatelům se plný text nezobrazuje	K zobrazení výsledku je třeba se přihlásit.