Effect of the ionic-strength of the gating-solution on a bioelectronic response

Eleonora Macchia, E., Manoli, K., Holtzer, B., Franco, C. D., Torricelli, F., Picca, R. A., Palazzo, G., Scamarcio, G., Torsi, L.

    Research output: Chapter in Book/Conference proceedingConference contributionScientificpeer-review

    Abstract

    Bioelectronic organic transistors have been recently proposed as a disruptive wide-field label-free single-molecule biosensing technology. Key relevant for this millimetric sized electrolyte-gated field-effect-transistor is a self-assembled-monolayer attached to the gate comprising a highly-packed layer of recognition elements. Here a dedicated study of the FET sensing response as a function of the salinity of the electrolyte solution is proposed. It has been demonstrated that the device response is dramatically reduced at high ionic strength and this offer the rationale for choosing to operate the device in pure water where the Debye length, lambda(D), is 100 nm.
    Original languageUndefined/Unknown
    Title of host publication2019 8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019
    PublisherIEEE
    Pages221–223
    Number of pages3
    ISBN (Print)978-1-7281-0557-4
    DOIs
    Publication statusPublished - 2019
    MoE publication typeA4 Article in a conference publication
    EventInternational Workshop on Advances in Sensors and Interfaces - 8th International Workshop on Advances in Sensors and Interfaces
    Duration: 13 Jun 201914 Jun 2019

    Conference

    ConferenceInternational Workshop on Advances in Sensors and Interfaces
    Period13/06/1914/06/19

    Keywords

    • Electrolyte-Gated Thin-Film-Transistors
    • Single Molecule detection with a Transistor - SiMoT

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