Thermal diffusivity of few-layers graphene measured by an all-optical method

H. Cabrera, D. Mendoza, J. L. Benítez, C. Bautista Flores, S. Alvarado, E. Marín

Research output: Contribution to journalArticle

16 Citations (Scopus)

Abstract

© 2015 IOP Publishing Ltd. We report on the measurement of the thermal diffusivity, D, of few-layers graphene obtained by chemical vapor deposition, using a noncontact optical microscopy method based on a mode mismatched thermal lens technique in a pump-probe two-laser beams configuration. It takes advantage of the coaxial counter propagating tightly focused excitation and collimated probe beams in an improved thermal lens microscopy setup. The obtained results: D = (6.5 ± 0.09) × 10-4m2s-1, D = (1.9 ± 0.07) × 10-4m2s-1and D = (1.3 ± 0.05) × 10-4m2s-1for four (on a glass slide), eight and sixteen graphene (freestanding) layers are reasonable values, as can be concluded from reported literature data.
Original languageAmerican English
JournalJournal of Physics D: Applied Physics
DOIs
StatePublished - 7 Oct 2015

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thermal lensing
Thermal diffusivity
thermal diffusivity
Graphene
Lenses
graphene
optics
microscopy
probes
chutes
Optical microscopy
Laser beams
Chemical vapor deposition
Microscopic examination
counters
vapor deposition
Pumps
laser beams
pumps

Cite this

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title = "Thermal diffusivity of few-layers graphene measured by an all-optical method",
abstract = "{\circledC} 2015 IOP Publishing Ltd. We report on the measurement of the thermal diffusivity, D, of few-layers graphene obtained by chemical vapor deposition, using a noncontact optical microscopy method based on a mode mismatched thermal lens technique in a pump-probe two-laser beams configuration. It takes advantage of the coaxial counter propagating tightly focused excitation and collimated probe beams in an improved thermal lens microscopy setup. The obtained results: D = (6.5 ± 0.09) × 10-4m2s-1, D = (1.9 ± 0.07) × 10-4m2s-1and D = (1.3 ± 0.05) × 10-4m2s-1for four (on a glass slide), eight and sixteen graphene (freestanding) layers are reasonable values, as can be concluded from reported literature data.",
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Thermal diffusivity of few-layers graphene measured by an all-optical method. / Cabrera, H.; Mendoza, D.; Benítez, J. L.; Bautista Flores, C.; Alvarado, S.; Marín, E.

In: Journal of Physics D: Applied Physics, 07.10.2015.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Thermal diffusivity of few-layers graphene measured by an all-optical method

AU - Cabrera, H.

AU - Mendoza, D.

AU - Benítez, J. L.

AU - Bautista Flores, C.

AU - Alvarado, S.

AU - Marín, E.

PY - 2015/10/7

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AB - © 2015 IOP Publishing Ltd. We report on the measurement of the thermal diffusivity, D, of few-layers graphene obtained by chemical vapor deposition, using a noncontact optical microscopy method based on a mode mismatched thermal lens technique in a pump-probe two-laser beams configuration. It takes advantage of the coaxial counter propagating tightly focused excitation and collimated probe beams in an improved thermal lens microscopy setup. The obtained results: D = (6.5 ± 0.09) × 10-4m2s-1, D = (1.9 ± 0.07) × 10-4m2s-1and D = (1.3 ± 0.05) × 10-4m2s-1for four (on a glass slide), eight and sixteen graphene (freestanding) layers are reasonable values, as can be concluded from reported literature data.

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