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Thermal characterization of carbon nanotube foam using MEMS microhotplates and thermographic analysis. / Silvestri, Cinzia; Riccio, M; Poelma, Rene; Morana, Bruno; Vollebregt, Sten; Santagata, Fabio; Irace, A; Zhang, Guo Qi; Sarro, Lina.

In: Nanoscale, No. 15, 31.03.2016, p. 1-10.

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@article{40f33d46316c40d495e2b08ccfc53067,
title = "Thermal characterization of carbon nanotube foam using MEMS microhotplates and thermographic analysis",
abstract = "Thermal material properties play a fundamental role in the thermal management of microelectronic systems. The porous nature of carbon nanotube (CNT) arrays results in a very high surface area to volume ratio, which makes the material attractive for surface driven heat transfer mechanisms. Here, we report on the heat transfer performance of lithographically defined micropins made of carbon nanotube (CNT) nanofoam, directly grown on microhotplates (MHPs). The MHP is used as an in situ characterization platform with controllable hot-spot and integrated temperature sensor. Under natural convection, and equivalent power supplied, we measured a significant reduction in hot-spot temperature when augmenting the MHP surface with CNT micropins. In particular, a strong enhancement of convective and radiative heat transfer towards the surrounding environment is recorded, due to the high aspect ratio and the foam-like morphology of the patterned CNTs. By combining electrical characterizations with high-resolution thermographic microscopy analysis, we quantified the heat losses induced by the integrated CNT nanofoams and we found a unique temperature dependency of the equivalent convective heat transfer coefficient, Hc. The obtained results with the proposed non-destructive characterization method demonstrate that significant improvements can be achieved in microelectronic thermal management and hierarchical structured porous material characterization.",
author = "Cinzia Silvestri and M Riccio and Rene Poelma and Bruno Morana and Sten Vollebregt and Fabio Santagata and A Irace and Zhang, {Guo Qi} and Lina Sarro",
year = "2016",
month = "3",
day = "31",
doi = "10.1039/C6NR00745G",
language = "English",
pages = "1--10",
journal = "Nanoscale",
issn = "2040-3364",
publisher = "Royal Society of Chemistry",
number = "15",

}

RIS

TY - JOUR

T1 - Thermal characterization of carbon nanotube foam using MEMS microhotplates and thermographic analysis

AU - Silvestri, Cinzia

AU - Riccio, M

AU - Poelma, Rene

AU - Morana, Bruno

AU - Vollebregt, Sten

AU - Santagata, Fabio

AU - Irace, A

AU - Zhang, Guo Qi

AU - Sarro, Lina

PY - 2016/3/31

Y1 - 2016/3/31

N2 - Thermal material properties play a fundamental role in the thermal management of microelectronic systems. The porous nature of carbon nanotube (CNT) arrays results in a very high surface area to volume ratio, which makes the material attractive for surface driven heat transfer mechanisms. Here, we report on the heat transfer performance of lithographically defined micropins made of carbon nanotube (CNT) nanofoam, directly grown on microhotplates (MHPs). The MHP is used as an in situ characterization platform with controllable hot-spot and integrated temperature sensor. Under natural convection, and equivalent power supplied, we measured a significant reduction in hot-spot temperature when augmenting the MHP surface with CNT micropins. In particular, a strong enhancement of convective and radiative heat transfer towards the surrounding environment is recorded, due to the high aspect ratio and the foam-like morphology of the patterned CNTs. By combining electrical characterizations with high-resolution thermographic microscopy analysis, we quantified the heat losses induced by the integrated CNT nanofoams and we found a unique temperature dependency of the equivalent convective heat transfer coefficient, Hc. The obtained results with the proposed non-destructive characterization method demonstrate that significant improvements can be achieved in microelectronic thermal management and hierarchical structured porous material characterization.

AB - Thermal material properties play a fundamental role in the thermal management of microelectronic systems. The porous nature of carbon nanotube (CNT) arrays results in a very high surface area to volume ratio, which makes the material attractive for surface driven heat transfer mechanisms. Here, we report on the heat transfer performance of lithographically defined micropins made of carbon nanotube (CNT) nanofoam, directly grown on microhotplates (MHPs). The MHP is used as an in situ characterization platform with controllable hot-spot and integrated temperature sensor. Under natural convection, and equivalent power supplied, we measured a significant reduction in hot-spot temperature when augmenting the MHP surface with CNT micropins. In particular, a strong enhancement of convective and radiative heat transfer towards the surrounding environment is recorded, due to the high aspect ratio and the foam-like morphology of the patterned CNTs. By combining electrical characterizations with high-resolution thermographic microscopy analysis, we quantified the heat losses induced by the integrated CNT nanofoams and we found a unique temperature dependency of the equivalent convective heat transfer coefficient, Hc. The obtained results with the proposed non-destructive characterization method demonstrate that significant improvements can be achieved in microelectronic thermal management and hierarchical structured porous material characterization.

UR - http://resolver.tudelft.nl/uuid:2555af69-d367-4574-963d-7e273bbbbd16

U2 - 10.1039/C6NR00745G

DO - 10.1039/C6NR00745G

M3 - Article

SP - 1

EP - 10

JO - Nanoscale

T2 - Nanoscale

JF - Nanoscale

SN - 2040-3364

IS - 15

ER -

ID: 6271157