What is it about?
This publication demonstrates that optical absorption peak positions in carbon nanotubes can be mapped to the optical absorption peak positions in graphene nanoribbons. This is possible for an achiral tube and ribbon, when the circumference of the tube is twice the width of the ribbon. In this case the mapping is linear.
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Why is it important?
The optical absorption peak positions in nanostructures form unique patterns that can be used as unique fingerprints for their identification. Thus, if catalogued the peak positions data can be used for fast, simple and highly efficient optical characterization of the sample structure and composition. However, catalogization requires maintaining huge amounts of information in structured databases which may impede development of compact and portable characterization tools and software. The amount of data stored in the database could be reduced if one part of a database could be computable based on the other part of the data. We inferred the relation between the experimental database of optical absorption peaks in carbon nanotubes and yet experimentally incomplete database of graphene nanoribbons. It allows one to calculate optical absorption peak positions of graphene nanoribbons based on absorption peak positions of carbon nanotubes.
Perspectives
The knowledge about exact relations between optical absorption peak positions in different nanostructres opens the way of designing complex optoelectronic devices free from the optical cross-talk between compontents in nanoscale. It can also increase robustness of the optical spectroscopy measurements interpretation in complex composite systems such as ribbon inside the tube and etc.
Vasil Saroka
Norwegian University of Science and Technology
Read the Original
This page is a summary of: 2N+4-rule and an atlas of bulk optical resonances of zigzag graphene nanoribbons, Nature Communications, January 2020, Springer Science + Business Media,
DOI: 10.1038/s41467-019-13728-8.
You can read the full text:
Resources
Band Structures in Zigzag Graphene Nanoribbons and Armchair Carbon Nanotubes
Wolfram Demonstrations Projects interactive demonstration comparing the electronic properties of carbon nanotubes and nanoribbons.
An-atlas-of-ZGNRs-bulk-optical-resonances
This is Mathematica and partially Python code to reproduce results of the paper "2N+4-rule and an atlas of bulk optical resonances of zigzag graphene nanoribbons". This is also a database of the first principle calculations results.
Optical selection rules of zigzag graphene nanoribbons
This is APS publication where optical absorption similarity between the tubes and ribbons proposed and investigated in detail.
Contributors
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