Toronto Metropolitan University
Browse
- No file added yet -

Study of nanostructure growth with nanoscale apex induced by femtosecond laser irradiation at megahertz repetition rate

Download (2.15 MB)
journal contribution
posted on 2022-12-17, 02:24 authored by Nikunj B Patel, Bo TanBo Tan, Krishnan Venkatakrishnan

Leaf-like nanostructures with nanoscale apex are induced on dielectric target surfaces by high-repetition-rate femtosecond laser irradiation in ambient conditions. We have recently developed this unique technique to grow leaf-like nanostructures with such interesting geometry without the use of any catalyst. It was found to be possible only in the presence of background nitrogen gas flow. In this synthesis method, the target serves as the source for building material as well as the substrate upon which these nanostructures can grow. In our investigation, it was found that there are three possible kinds of nanotips that can grow on target surfaces. In this report, we have presented the study of the growth mechanisms of such leaf-like nanostructures under various conditions such as different laser pulse widths, pulse repetition rates, dwell times, and laser polarizations. We observed a clear transformation in the kind of nanotips that grew for the given laser conditions.

History

Language

English

Usage metrics

    Biomedical Engineering

    Licence

    Exports

    RefWorks
    BibTeX
    Ref. manager
    Endnote
    DataCite
    NLM
    DC