Title
Effects of Conformal Nanoscale Coatings on Thermal Performance of Vertically Aligned Carbon Nanotubes
Author
Silvestri, C. (TU Delft Tera-Hertz Sensing)
Riccio, Michele (Università degli Studi di Napoli Federico II)
Poelma, René H. (TU Delft Electronic Components, Technology and Materials)
Jovic, A. (TU Delft EKL Processing)
Morana, B. (TU Delft Electronic Components, Technology and Materials)
Vollebregt, S. (TU Delft Electronic Components, Technology and Materials)
Irace, Andrea (Università degli Studi di Napoli Federico II)
Zhang, Kouchi (TU Delft Electronic Components, Technology and Materials)
Sarro, Pasqualina M (TU Delft Electronic Components, Technology and Materials)
Date
2018
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.
Subject
Carbon nanotubes
Conformal coating
Epoxy molding
Thermal property
Vertically aligned
To reference this document use:
http://resolver.tudelft.nl/uuid:04d6a588-a0fa-4fa6-a064-66afced8e2d6
DOI
https://doi.org/10.1002/smll.201800614
Embargo date
2018-10-17
ISSN
1613-6810
Source
Small (online), 14 (20), 1-10
Bibliographical 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.
Part of collection
Institutional Repository
Document type
journal article
Rights
© 2018 C. Silvestri, Michele Riccio, René H. Poelma, A. Jovic, B. Morana, S. Vollebregt, Andrea Irace, Kouchi Zhang, Pasqualina M Sarro