Covalent Bonding-Based Adhesion Method for Rigidly Coupling Metal Nanocrystals to Metal and Metal Oxide Surfaces

The major challenges of developing a robust strain coupling between nanocrystals and a strain medium are addressed by employing a simple self-assembly-based adhesion process that relies on the formation of metal-oxide bonds between Ni nanocrystals and various surfaces. X-ray photoelectron spectrosco...

Full description

Saved in:
Bibliographic Details
Published in:ACS applied nano materials 2021-04, Vol.4 (4), p.3426-3433
Main Authors: Sasaki, Stephen, Kurish, Jeffrey, Robbennolt, Shauna, Yan, Yan, Garcia, Eduardo, Tolbert, Sarah H
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The major challenges of developing a robust strain coupling between nanocrystals and a strain medium are addressed by employing a simple self-assembly-based adhesion process that relies on the formation of metal-oxide bonds between Ni nanocrystals and various surfaces. X-ray photoelectron spectroscopy indicates that the adhesion mechanism necessitates high oxidation potential surfaces capable of metal-oxide bond formation. The process is demonstrated to be reversible, using a reducing plasma to induce adhesion in previously unadhered NiO/Ni nanocrystals. Adhesion to the substrate develops interfacial stress in the nanocrystals resulting in a 40 Oe increase in coercivity and a 25 K shift in the blocking temperature.
ISSN:2574-0970
2574-0970
DOI:10.1021/acsanm.0c03246