Edge and confinement effects allow in situ measurement of size and thickness of liquid-exfoliated nanosheets

Claudia Backes, Ronan J. Smith, Niall McEvoy, Nina C. Berner, David McCloskey, Hannah C. Nerl, Arlene O’Neill, Paul J. King, Tom Higgins, Damien Hanlon, Nils Scheuschner, Janina Maultzsch, Lothar Houben, Georg S. Duesberg, John F. Donegan, Valeria Nicolosi and Jonathan N. Coleman ()
Additional contact information
Claudia Backes: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Ronan J. Smith: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Niall McEvoy: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Nina C. Berner: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
David McCloskey: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Hannah C. Nerl: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Arlene O’Neill: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Paul J. King: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Tom Higgins: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Damien Hanlon: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Nils Scheuschner: Institut für Festkörperphysik, Technische Universität Berlin
Janina Maultzsch: Institut für Festkörperphysik, Technische Universität Berlin
Lothar Houben: Ernst Ruska Center for Microscopy and Spectroscopy with Electrons, Research Center Jülich
Georg S. Duesberg: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
John F. Donegan: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Valeria Nicolosi: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
Jonathan N. Coleman: Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin

Nature Communications, 2014, vol. 5, issue 1, 1-10

Abstract: Abstract Two-dimensional nanomaterials such as MoS2 are of great interest both because of their novel physical properties and their applications potential. Liquid exfoliation, an important production method, is limited by our inability to quickly and easily measure nanosheet size, thickness or concentration. Here we demonstrate a method to simultaneously determine mean values of these properties from an optical extinction spectrum measured on a liquid dispersion of MoS2 nanosheets. The concentration measurement is based on the size-independence of the low-wavelength extinction coefficient, while the size and thickness measurements rely on the effect of edges and quantum confinement on the optical spectra. The resultant controllability of concentration, size and thickness facilitates the preparation of dispersions with pre-determined properties such as high monolayer-content, leading to first measurement of A-exciton MoS2 luminescence in liquid suspensions. These techniques are general and can be applied to a range of two-dimensional materials including WS2, MoSe2 and WSe2.

Date: 2014
References: Add references at CitEc
Citations: View citations in EconPapers (1)

Downloads: (external link)
https://www.nature.com/articles/ncomms5576 Abstract (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5576

Ordering information: This journal article can be ordered from
https://www.nature.com/ncomms/

DOI: 10.1038/ncomms5576

Access Statistics for this article

Nature Communications is currently edited by Nathalie Le Bot, Enda Bergin and Fiona Gillespie

More articles in Nature Communications from Nature
Bibliographic data for series maintained by Sonal Shukla () and Springer Nature Abstracting and Indexing ().