Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes

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Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes. / Silvestri, Cinzia; Riccio, Michele; Poelma, Rene H.; Jovic, Aleksandar ; Morana, Bruno ; Vollebregt, Sten; Irace, Andrea; Zhang, Guo Qi ; Sarro, Pasqualina M.

In: Small, Vol. 14, No. 20, 2018, p. 1-10.

Research output: Contribution to journal › Article › Scientific › peer-review

BibTeX

@article{04d6a588a0fa4fa6a06466afced8e2d6,

title = "Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes",

abstract = "The high aspect ratio and the porous nature of spatially oriented forest-like carbon nanotube (CNT) structures represent a unique opportunity to engineer a novel class of nanoscale assemblies. By combining CNTs and conformal coatings, a 3D lightweight scaffold with tailored behavior can be achieved. The effect of nanoscale coatings, aluminum oxide (Al2O3) and nonstoichiometric amorphous silicon carbide (a-SiC), on the thermal transport efficiency of high aspect ratio vertically aligned CNTs, is reported herein. The thermal performance of the CNT-based nanostructure strongly depends on the achieved porosity, the coating material and its infiltration within the nanotube network. An unprecedented enhancement in terms of effective thermal conductivity in a-SiC coated CNTs has been obtained: 181{\%} compared to the as-grown CNTs and Al2O3 coated CNTs. Furthermore, the integration of coated high aspect ratio CNTs in an epoxy molding compound demonstrates that, next to the required thermal conductivity, the mechanical compliance for thermal interface applications can also be achieved through coating infiltration into foam-like CNT forests.",

keywords = "Carbon nanotubes, Conformal coating, Epoxy molding, Thermal property, Vertically aligned",

author = "Cinzia Silvestri and Michele Riccio and Poelma, {Rene H.} and Aleksandar Jovic and Bruno Morana and Sten Vollebregt and Andrea Irace and Zhang, {Guo Qi} and Sarro, {Pasqualina M.}",

note = "Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.",

year = "2018",

doi = "10.1002/smll.201800614",

language = "English",

volume = "14",

pages = "1--10",

journal = "Small (online)",

issn = "1613-6829",

publisher = "Wiley-VCH Verlag",

number = "20",

}

RIS

TY - JOUR

T1 - Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes

AU - Silvestri, Cinzia

AU - Riccio, Michele

AU - Poelma, Rene H.

AU - Jovic, Aleksandar

AU - Morana, Bruno

AU - Vollebregt, Sten

AU - Irace, Andrea

AU - Zhang, Guo Qi

AU - Sarro, Pasqualina M.

N1 - Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.

PY - 2018

Y1 - 2018

N2 - The high aspect ratio and the porous nature of spatially oriented forest-like carbon nanotube (CNT) structures represent a unique opportunity to engineer a novel class of nanoscale assemblies. By combining CNTs and conformal coatings, a 3D lightweight scaffold with tailored behavior can be achieved. The effect of nanoscale coatings, aluminum oxide (Al2O3) and nonstoichiometric amorphous silicon carbide (a-SiC), on the thermal transport efficiency of high aspect ratio vertically aligned CNTs, is reported herein. The thermal performance of the CNT-based nanostructure strongly depends on the achieved porosity, the coating material and its infiltration within the nanotube network. An unprecedented enhancement in terms of effective thermal conductivity in a-SiC coated CNTs has been obtained: 181% compared to the as-grown CNTs and Al2O3 coated CNTs. Furthermore, the integration of coated high aspect ratio CNTs in an epoxy molding compound demonstrates that, next to the required thermal conductivity, the mechanical compliance for thermal interface applications can also be achieved through coating infiltration into foam-like CNT forests.

AB - The high aspect ratio and the porous nature of spatially oriented forest-like carbon nanotube (CNT) structures represent a unique opportunity to engineer a novel class of nanoscale assemblies. By combining CNTs and conformal coatings, a 3D lightweight scaffold with tailored behavior can be achieved. The effect of nanoscale coatings, aluminum oxide (Al2O3) and nonstoichiometric amorphous silicon carbide (a-SiC), on the thermal transport efficiency of high aspect ratio vertically aligned CNTs, is reported herein. The thermal performance of the CNT-based nanostructure strongly depends on the achieved porosity, the coating material and its infiltration within the nanotube network. An unprecedented enhancement in terms of effective thermal conductivity in a-SiC coated CNTs has been obtained: 181% compared to the as-grown CNTs and Al2O3 coated CNTs. Furthermore, the integration of coated high aspect ratio CNTs in an epoxy molding compound demonstrates that, next to the required thermal conductivity, the mechanical compliance for thermal interface applications can also be achieved through coating infiltration into foam-like CNT forests.

KW - Carbon nanotubes

KW - Conformal coating

KW - Epoxy molding

KW - Thermal property

KW - Vertically aligned

UR - http://www.scopus.com/inward/record.url?scp=85045758373&partnerID=8YFLogxK

U2 - 10.1002/smll.201800614

DO - 10.1002/smll.201800614

M3 - Article

VL - 14

SP - 1

EP - 10

JO - Small (online)

T2 - Small (online)

JF - Small (online)

SN - 1613-6829

IS - 20

ER -

ID: 44903991