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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