Estimation of mass thickness response of embedded aggregated silica nanospheres from high angle annular dark-field scanning transmission electron micrographs
Artikel i vetenskaplig tidskrift, 2014

In this study, we investigate the functional behaviour of the intensity in high-angle annular dark field scanning transmission electron micrograph images. The model material is a silica particle (20 nm) gel at 5 wt%. By assuming that the intensity response is monotonically increasing with increasing mass thickness of silica, an estimate of the functional form is calculated using a maximum likelihood approach. We conclude that a linear functional form of the intensity provides a fair estimate but that a power function is significantly better for estimating the amount of silica in the z-direction. The work adds to the development of quantifying material properties from electron micrographs, especially in the field of tomography methods and three-dimensional quantitative structural characterization from a scanning transmission electron micrograph. It also provides means for direct three-dimensional quantitative structural characterization from a scanning transmission electron micrograph.

structural characterization

Likelihood

TOMOGRAPHY

mass thickness

scanning transmission electron microscopy

Författare

Matias Nordin

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Christoffer Abrahamsson

SuMo Biomaterials

Chalmers, Kemi- och bioteknik, Teknisk ytkemi

Charlotte Hamngren Blomqvist

SuMo Biomaterials

Chalmers, Teknisk fysik, Eva Olsson Group

Henrike Häbel

SuMo Biomaterials

Göteborgs universitet

Chalmers, Matematiska vetenskaper, matematisk statistik

Magnus Röding

Chalmers, Matematiska vetenskaper, matematisk statistik

Göteborgs universitet

SuMo Biomaterials

Eva Olsson

Chalmers, Teknisk fysik, Eva Olsson Group

Magnus Nydén

University of South Australia

Mats Rudemo

Chalmers, Matematiska vetenskaper, matematisk statistik

Göteborgs universitet

Journal of Microscopy

0022-2720 (ISSN) 1365-2818 (eISSN)

Vol. 253 166-170

Ämneskategorier

Fysik

Styrkeområden

Materialvetenskap

DOI

10.1111/jmi.12107