Measuring the lateral size of liquid-exfoliated nanosheets with dynamic light scattering
File Type:
PDFItem Type:
Journal ArticleDate:
2013Access:
OpenAccessCitation:
Lotya, M., Rakovich, A., Donegan, J.F., Coleman, J.N., Measuring the lateral size of liquid-exfoliated nanosheets with dynamic light scattering, Nanotechnology, 24, 26, 2013, art. no. 265703Download Item:
Lotya et al nanotechnology.pdf (Published (author's copy) - Peer Reviewed) 531.7Kb
Abstract:
We have developed an in-situ method to estimate the lateral size of exfoliated nanosheets dispersed in a liquid. Using standard liquid exfoliation and size-selection techniques, we prepared a range of dispersions of graphene, MoS2 and WS2 nanosheets with different mean lateral sizes. The mean nanosheet length was measured using transmission electron microscopy (TEM) to vary from ~40 nm to ~1 ?m. These dispersions were characterised using a standard dynamic light scattering (DLS) instrument. We found a well-defined correlation between the peak of the particle size distribution as outputted by the DLS instrument and the nanosheet length as measured by TEM. This correlation is consistent with the DLS instrument outputting the radius of the sphere with volume equal to the mean nanosheet volume. This correlation allows the mean nanosheet length to be extracted from DLS data.
Author's Homepage:
http://people.tcd.ie/colemajhttp://people.tcd.ie/jdonegan
Description:
PUBLISHEDType of material:
Journal ArticleCollections:
Series/Report no:
Nanotechnology;24;
26;
Availability:
Full text availableKeywords:
exfoliated nanosheetsLicences: