1.
Ultramicroscopy
; 135: 89-94, 2013 Dec.
Article
in English
| MEDLINE
| ID: mdl-23948627
ABSTRACT
Nano-particles are of great interest in fundamental and applied research. However, their accurate visualization is often difficult and the interpretation of the obtained images can be complicated. We present a comparative scanning electron microscopy and helium ion microscopy study of cetyltrimethylammonium-bromide (CTAB) coated gold nano-rods. Using both methods we show how the gold core as well as the surrounding thin CTAB shell can selectively be visualized. This allows for a quantitative determination of the dimensions of the gold core or the CTAB shell. The obtained CTAB shell thickness of 1.0 nm-1.5 nm is in excellent agreement with earlier results using more demanding and reciprocal space techniques.