Author
Listed:
- Claudia Backes
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Ronan J. Smith
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Niall McEvoy
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Chemistry, Trinity College Dublin)
- Nina C. Berner
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Chemistry, Trinity College Dublin)
- David McCloskey
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Hannah C. Nerl
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin
School of Chemistry, Trinity College Dublin)
- Arlene O’Neill
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Paul J. King
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Tom Higgins
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Damien Hanlon
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, 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
School of Chemistry, Trinity College Dublin)
- John F. Donegan
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
- Valeria Nicolosi
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin
School of Chemistry, Trinity College Dublin)
- Jonathan N. Coleman
(Centre for Research on Adaptive Nanostructures and Nanodevices (CRANN), Trinity College Dublin
School of Physics, Trinity College Dublin)
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.
Suggested Citation
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 &, 2014.
"Edge and confinement effects allow in situ measurement of size and thickness of liquid-exfoliated nanosheets,"
Nature Communications, Nature, vol. 5(1), pages 1-10, December.
Handle:
RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5576
DOI: 10.1038/ncomms5576
Download full text from publisher
Corrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms5576. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
We have no bibliographic references for this item. You can help adding them by using this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: Sonal Shukla or Springer Nature Abstracting and Indexing (email available below). General contact details of provider: http://www.nature.com .
Please note that corrections may take a couple of weeks to filter through
the various RePEc services.