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Nanomaterials 2016, 6(11), 217; doi:10.3390/nano6110217

Electrostatic Self-Assembly of Diamond Nanoparticles onto Al- and N-Polar Sputtered Aluminum Nitride Surfaces

1
Fraunhofer Institute for Applied Solid State Physics, Tullastraße 72, 79108 Freiburg, Germany
2
Department of Microsystems Engineering—IMTEK, University of Freiburg, Georges-Köhler-Allee 103, 79110 Freiburg, Germany
3
Atomic Energy and Alternative Energies Commission (CEA), Laboratory of Applied Research on Software-Intensive Technologies (LIST), Diamond Sensors Laboratory, F-91191 Gif-sur-Yvette, France
*
Author to whom correspondence should be addressed.
Academic Editor: Qiaoqin Yang
Received: 11 October 2016 / Accepted: 10 November 2016 / Published: 17 November 2016
(This article belongs to the Special Issue Diamond and Its Related Nanostructured Thin Films/Coatings)
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Abstract

Electrostatic self-assembly of diamond nanoparticles (DNPs) onto substrate surfaces (so-called nanodiamond seeding) is a notable technique, enabling chemical vapor deposition (CVD) of nanocrystalline diamond thin films on non-diamond substrates. In this study, we examine this technique onto differently polarized (either Al- or N-polar) c-axis oriented sputtered aluminum nitride (AlN) film surfaces. This investigation shows that Al-polar films, as compared to N-polar ones, obtain DNPs with higher density and more homogeneously on their surfaces. The origin of these differences in density and homogeneity is discussed based on the hydrolysis behavior of AlN surfaces in aqueous suspensions. View Full-Text
Keywords: electrostatic self-assembly; nanodiamond seeding; diamond nanoparticles; aluminum nitride; polarity; surface oxidation; hydrolysis; zeta potential electrostatic self-assembly; nanodiamond seeding; diamond nanoparticles; aluminum nitride; polarity; surface oxidation; hydrolysis; zeta potential
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Yoshikawa, T.; Reusch, M.; Zuerbig, V.; Cimalla, V.; Lee, K.-H.; Kurzyp, M.; Arnault, J.-C.; Nebel, C.E.; Ambacher, O.; Lebedev, V. Electrostatic Self-Assembly of Diamond Nanoparticles onto Al- and N-Polar Sputtered Aluminum Nitride Surfaces. Nanomaterials 2016, 6, 217.

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