Understanding electrical conduction and nanopore formation during controlled breakdown

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Fried, Jasper P., Swett, Jacob L., Paulose Nadappuram, Binoy, Fedosyuk, Aleksandra, Sousa, Pedro Miguel, Briggs, Dayrl P., Ivanov, Aleksandar P., Edel, Joshua B., Mol, Jan A. and Yates, James R. (2021) Understanding electrical conduction and nanopore formation during controlled breakdown. Small, 17 (37). 2102543. ISSN 1613-6810 (https://doi.org/10.1002/smll.202102543)

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Controlled breakdown has recently emerged as a highly appealing technique to fabricate solid-state nanopores for a wide range of biosensing applications. This technique relies on applying an electric field of approximately 0.4–1 V nm−1 across the membrane to induce a current, and eventually, breakdown of the dielectric. Although previous studies have performed controlled breakdown under a range of different conditions, the mechanism of conduction and breakdown has not been fully explored. Here, electrical conduction and nanopore formation in SiNx membranes during controlled breakdown is studied. It is demonstrated that for Si-rich SiNx, oxidation reactions that occur at the membrane-electrolyte interface limit conduction across the dielectric. However, for stoichiometric Si3N4 the effect of oxidation reactions becomes relatively small and conduction is predominately limited by charge transport across the dielectric. Several important implications resulting from understanding this process are provided which will aid in further developing controlled breakdown in the coming years, particularly for extending this technique to integrate nanopores with on-chip nanostructures.

ORCID iDs

Fried, Jasper P., Swett, Jacob L., Paulose Nadappuram, Binoy ORCID logoORCID: https://orcid.org/0000-0002-1386-8357, Fedosyuk, Aleksandra, Sousa, Pedro Miguel, Briggs, Dayrl P., Ivanov, Aleksandar P., Edel, Joshua B., Mol, Jan A. and Yates, James R.;
  • Item type:['eprint_typename_article' not defined]
    ID code:81785
    Dates:
    Date
    Event
    16 ['lib/utils:month_09' not defined] 2021
    Published
    1 ['lib/utils:month_08' not defined] 2021
    Published Online
    1 ['lib/utils:month_07' not defined] 2021
    Accepted
    ['eprint_fieldname_subjects' not defined]:Science['lib/metafield:join_subject_parts' not defined]Chemistry
    ['eprint_fieldname_divisions' not defined]:Faculty of Science['lib/metafield:join_subject_parts' not defined]Pure and Applied Chemistry
    Depositing user: Pure Administrator
    Date deposited:09 ['lib/utils:month_short_08' not defined] 2022 15:23
    Last modified:02 ['lib/utils:month_short_06' not defined] 2026 06:09
    URI:https://strathprints.strath.ac.uk/id/eprint/81785
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