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Ionomer-Based Ion-Sensitive Field-Effect Transistor for Lithium Ion Sensing
Tuluhan Olcayto Colak1, Mehmet Kurt1, Ecenaz Yaman1
1Micro and Nanotechnology Graduate Program, TOBB University of Economics and Technology, Sogutozu Caddesi No 43 Sogutozu 06560 Ankara, Turkey.
Abstract:
Lithium detection is critical in the medical field, as it is used for the treatment of bipolar disorder. Here, we offer a simple method using an ion-sensitive field-effect transistor device prepared to detect the presence of lithium in a solution. The Nafion 115 membrane used in this study has been conditioned to allow the transport of lithium ions from the electrolyte to a zinc oxide-based transistor. The device was studied with lithium ion concentrations ranging between 10-2-10-7 M. It was modeled using the COMSOL Multiphysics program for 10-2 M. The device showed 2.85 mA/decade sensitivity and a detection limit of 77 μM.
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