Heat conduction across multiwalled carbon nanotube/graphene hybrid films

Author

Li, Xiaocheng ; Jarvis, Loh Guan Chee ; Liang, Kun ; Tay, Beng Kang ; Baillargeat, Dominique

Author_Institution

Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore, Singapore

fYear

2011

fDate

7-9 Dec. 2011

Firstpage

63

Lastpage

66

Abstract

Chemically-reduced graphene oxide (CR-GO) was obtained by reduction of graphene oxide in solution of hydrazine hydrate and ammonium hydroxide solution. AFM and Raman spectra indicated the formation of single-layer CR-GO nanosheets. By using the drop-cast method, multi-walled carbon nanotube (MWCNT)-CR-GO hybrid film was fabricated by transferring the synthesized CR-GO onto the top surface of MWCNT arrays. The electrical and thermal conductivity of the MWCNT-CR-GO hybrid material are also investigated. It was found that the additional layer of graphene on MWNCT reduces the thermal conductance between MWCNT and graphene induced by their non-covalent interface.

Keywords

Raman spectra; atomic force microscopy; carbon nanotubes; electrical conductivity; graphene; heat conduction; nanofabrication; reduction (chemical); thermal conductivity; thin films; AFM spectra; C-C; MWCNL arrays; MWCNL-CR-GO hybrid film; MWCNL-CR-GO hybrid material; Raman spectra; ammonium hydroxide solution; chemically-reduced graphene oxide; drop-cast method; electrical conductivity; heat conduction; hydrazine hydrate solution; multiwalled carbon nanotube-graphene hybrid films; noncovalent interface; single-layer CR-GO nanosheet formation; thermal conductance reduction; thermal conductivity; Carbon nanotubes; Conductivity; Films; Gold; Surface treatment; Temperature measurement; Thermal conductivity;

fLanguage

English

Publisher

ieee

Conference_Titel

Electronics Packaging Technology Conference (EPTC), 2011 IEEE 13th

Conference_Location

Singapore

Print_ISBN

978-1-4577-1983-7

Electronic_ISBN

978-1-4577-1981-3

Type

conf

DOI

10.1109/EPTC.2011.6184387

Filename

6184387