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Thermal conductivity measurement of graphene exfoliated on silicon dioxide / Jae Hun Seol in Journal of heat transfer, Vol. 133 N° 2 (Fevrier 2011) 

Public ISBD [article]  in Journal of heat transfer > Vol. 133 N° 2 (Fevrier 2011) . - pp. [022403/1-7] Titre : Thermal conductivity measurement of graphene exfoliated on silicon dioxide Type de document : texte imprimé Auteurs : Jae Hun Seol, Auteur ; Arden L. Moore, Auteur ; Li Shi, Auteur Année de publication : 2011 Article en page(s) : pp. [022403/1-7] Note générale : Physique Langues : Anglais (eng) Mots-clés : Thermal  conductivity  Supported  graphene  Phonon  transport  Measurement Index. décimale : 536 Chaleur. Thermodynamique Résumé : We have developed a nanofabricated resistance thermometer device to measure the thermal conductivity of graphene monolayers exfoliated onto silicon dioxide. The measurement results show that the thermal conductivity of the supported graphene is approximately 600 W/m K at room temperature. While this value is lower than the reported basal plane values for graphite and suspended graphene because of phonon leakage across the graphene-support interface, it is still considerably higher than the values for common thin film electronic materials. Here, we present a detailed discussion of the design and fabrication of the measurement device. Analytical and numerical heat transfer solutions are developed to evaluate the accuracy and uncertainty of this method for thermal conductivity measurement of high-thermal conductivity ultrathin films. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...] [article] Thermal conductivity measurement of graphene exfoliated on silicon dioxide [texte imprimé] / Jae Hun Seol, Auteur ; Arden L. Moore, Auteur ; Li Shi, Auteur . - 2011 . - pp. [022403/1-7]. Physique Langues : Anglais (eng) in Journal of heat transfer > Vol. 133 N° 2 (Fevrier 2011) . - pp. [022403/1-7] Mots-clés : Thermal  conductivity  Supported  graphene  Phonon  transport  Measurement Index. décimale : 536 Chaleur. Thermodynamique Résumé : We have developed a nanofabricated resistance thermometer device to measure the thermal conductivity of graphene monolayers exfoliated onto silicon dioxide. The measurement results show that the thermal conductivity of the supported graphene is approximately 600 W/m K at room temperature. While this value is lower than the reported basal plane values for graphite and suspended graphene because of phonon leakage across the graphene-support interface, it is still considerably higher than the values for common thin film electronic materials. Here, we present a detailed discussion of the design and fabrication of the measurement device. Analytical and numerical heat transfer solutions are developed to evaluate the accuracy and uncertainty of this method for thermal conductivity measurement of high-thermal conductivity ultrathin films. DEWEY : 536 ISSN : 0022-1481 En ligne : http://asmedl.aip.org/vsearch/servlet/VerityServlet?KEY=JHTRAO&ONLINE=YES&smode= [...]