Abstract
Abstract
The high surface sensitivity of low-dimensional carbon nanomaterials renders them good candidates for noise detection. Herein, Mg-porphyrin-modified graphene field-effect transistors (FETs) were fabricated, and parts-per-billion concentrations of NO2 were introduced to the devices. When the power spectrum density (PSD) of the Mg-porphyrin-modified graphene was measured in NO2, a specific PSD change near 1000 Hz was observed. This change could be due to the change in the electrical state of Mg-porphyrin caused by NO2 adsorption. This study reveals that frequency-domain measurement of graphene FETs can be used to evaluate changes in the electronic state of molecules.
Funder
Japan Society for the Promotion of Science
Core Research for Evolutional Science and Technology
Precursory Research for Embryonic Science and Technology
Subject
General Physics and Astronomy,General Engineering
Cited by
1 articles.
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