Freestanding graphene membranes were functionalized with SnO2 nanoparticles. A detailed procedure providing uniform coverage and chemical synthesis is presented. Elemental composition was determined using scanning electron microscopy combined with energy dispersive x-ray analysis. A technique called electrostatic-manipulation scanning tunneling microscopy was used to probe the electromechanical properties of functionalized freestanding graphene samples. We found ten times larger movement perpendicular to the plane compared to pristine freestanding graphene and propose a nanoparticle encapsulation model.
Physics, Astronomy, and Materials Science
This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Applied Physics Letters and may be found at https://doi.org/10.1063/1.4745780
energy dispersive X-ray spectroscopy, transition metal oxides, graphene, chemical elements, nanotubes, scanning tunneling microscopy, scanning electron microscopy, chemical synthesis, electrostatics, nanoparticles
Dong, L., J. Hansen, P. Xu, M. L. Ackerman, S. D. Barber, J. K. Schoelz, D. Qi, and P. M. Thibado. "Electromechanical properties of freestanding graphene functionalized with tin oxide (SnO2) nanoparticles." Applied Physics Letters 101, no. 6 (2012).
Applied Physics Letters