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

A4 Conference proceedings

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Publication Details

List of Authors: Macchia, E.; Manoli, K.; Holtzer, B.; Franco, C. D.; Torricelli, F.; Picca, R. A.; Palazzo, G.; Scamarcio, G.; Torsi, L.
Publication year: 2019
Publisher: IEEE
Book title: 2019 8th International Workshop on Advances in Sensors and Interfaces, IWASI 2019
Start page: 221
End page: 223
Number of pages: 3
ISBN: 978-1-7281-0557-4


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.


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

Last updated on 2020-02-04 at 08:57