Pulsed Method for Characterizing Aqueous Media Using Nanowire Field Effect Transistors

Author

Mescher, Marleen ; Marcelis, Bout ; De Smet, Louis C P M ; Sudhölter, Ernst J R ; Klootwijk, Johan H.

Author_Institution

Mater. Innovation Inst. (M2i), Delft, Netherlands

Volume

58

Issue

7

fYear

2011

fDate

7/1/2011 12:00:00 AM

Firstpage

1886

Lastpage

1891

Abstract

This paper presents a method for using nanowire field-effect transistors (NW-FETs) as sensors in aqueous solutions without the need for a reference electrode. A pulsed-gate potential method is used to reduce instabilities related to the dynamics of ions and other charged species present in the solution. Application of this method results in a significant increase in the stability of the electrical properties of the devices, enabling reproducible characterization of aqueous media with NW-FETs. We show that this method can be applied to perform pH measurements with a silicon NW-FET.

Keywords

field effect transistors; nanowires; pH measurement; NW-FET; aqueous media; electrical property; nanowire field effect transistor; pH measurements; pulsed-gate potential method; reference electrode; Current measurement; Electric potential; Logic gates; Nanobioscience; Sensor phenomena and characterization; Silicon; Field-effect transistor (FET); fluidics; nanowire; pulsed measurements; sensor;

fLanguage

English

Journal_Title

Electron Devices, IEEE Transactions on

Publisher

ieee

ISSN

0018-9383

Type

jour

DOI

10.1109/TED.2011.2142416

Filename

5770199