Picture of a sphere with binary code

Making Strathclyde research discoverable to the world...

The Strathprints institutional repository is a digital archive of University of Strathclyde research outputs. It exposes Strathclyde's world leading Open Access research to many of the world's leading resource discovery tools, and from there onto the screens of researchers around the world.

Explore Strathclyde Open Access research content

Weighing supported nanoparticles : size-selected clusters as mass standards in nanometrology

Young, N. P. and Li, Z. Y. and Chen, Yu and Palomba, S. and Di Vece, M. and Palmer, R. E. (2008) Weighing supported nanoparticles : size-selected clusters as mass standards in nanometrology. Physical Review Letters, 101 (24). ISSN 0031-9007

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

We present a new approach to quantify the mass and 3D shape of nanoparticles on supports, using size-selected nanoclusters as mass standards in scanning transmission electron microscope. Through quantitative image intensity analysis, we show that the integrated high angle annular dark field intensities of size-selected gold clusters soft-landed on graphite display a monotonic dependence on the cluster size as far as similar to 6500 atoms. We applied this mass standard to study gold nanoparticles prepared by thermal vapor deposition and by colloidal wet chemistry, and from which we deduced the shapes of these two types of nanoparticles as expected.