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.


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.
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