AI Article Synopsis
- The study focuses on the optical imaging and absorption spectroscopy of armchair graphene nanoribbons (GNRs) placed on fused silica substrates, using controlled light polarization to improve visibility.
- Linear absorption spectra are measured for 7-armchair and 9-armchair GNRs, with results that align well with theoretical calculations.
- The developed polarization spectroscopy technique allows for clear identification of GNRs and serves as a fast method to assess large areas of transferred films.
Article Abstract
We report the optical imaging and absorption spectroscopy on atomically precise armchair graphene nanoribbons (GNRs) on insulating fused silica substrates. This is achieved by controlling light polarization on macroscopically aligned GNRs which greatly enhances the optical contrast of the submonolayer GNRs on the insulating substrates. We measure the linear absorption spectra of 7-armchair and 9-armchair GNRs in this study, and the experimental data agree qualitatively with ab inito calculation results. The polarization spectroscopy technique enables an unambiguous optical identification of GNRs and provides a rapid tool to characterize the transferred film over a large area.
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| http://dx.doi.org/10.1021/acs.nanolett.9b04497 | DOI Listing |
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