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Vol. 229, Issue 1, January 2019, pp. 39-46




Creation of a Humidity Sensor Based on Functionalized Graphene Nanostructures

1 Tilek K. Kuanyshbekov, 1 Arkady M. Ilyin, 2 Gary W. Beall and 1 Nazim R. Guseinov

1 al-Farabi Kazakh National University, al-Farabi Avenue, 71, Almaty 050040, Kazakhstan
2 Texas State University, 601 university Dr, San Marcos, TX 78666-4684, USA
1 Tel.: 87052817796, 87752028095

E-mail: kuanyshbekov_17@mail.ru, ilyinar@mail.ru, solar_neo@mail.ru, gb11@txstate.edu


Received: 30 November 2018 /Accepted: 31 December 2018 /Published: 31 January 2019

Digital Sensors and Sensor Sysstems


Abstract: In this article, we present the results of GO as a primary material of the humidity sensor and the electro-physical characteristics of this sensitive element. The sensitive humidity sensor created using the GO membrane was obtained via vacuum filtration. Initial material GO was synthesized by the modified Hummers method and characterized by Raman spectroscopy, XRD analysis and SEM. The stability of the electrical resistance, also the rate of recovery and response of a humidity sensor element based on GO was studied as a function of the relative humidity level. The GO sensor was demonstrated to function properly in a wide range of humidity over an extended 10 hour period at room temperature. The deviation of the electrical resistance readings of the device during the experiment did not exceed 2 %.


Keywords: Graphene; Functionalized graphene, Graphene oxide (GO); Hummers method; Humidity sensor, X-ray diffraction.


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