Next Article in Journal
Bradykinin B2 Receptor Contributes to Inflammatory Responses in Human Endothelial Cells by the Transactivation of the Fibroblast Growth Factor Receptor FGFR-1
Next Article in Special Issue
Cancer Vaccine Immunotherapy with RNA-Loaded Liposomes
Previous Article in Journal
Peiminine Protects against Lipopolysaccharide-Induced Mastitis by Inhibiting the AKT/NF-κB, ERK1/2 and p38 Signaling Pathways
Previous Article in Special Issue
Towards a Bioelectronic Computer: A Theoretical Study of a Multi-Layer Biomolecular Computing System That Can Process Electronic Inputs
Open AccessArticle

Noise Analysis of Monolayer Graphene Nanopores

College of Instrumentation and Electrical Engineering, Jilin University, Changchun 130061, China
Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, China
Materials Characterization and Preparation Center, Southern University of Science and Technology, Shenzhen 518055, China
Authors to whom correspondence should be addressed.
Int. J. Mol. Sci. 2018, 19(9), 2639;
Received: 5 July 2018 / Revised: 21 August 2018 / Accepted: 3 September 2018 / Published: 6 September 2018
(This article belongs to the Special Issue Nucleic Acid Nanotechnology)
Graphene-based nanopore devices have shown tantalizing potential in single molecule detection for their monoatomic membrane thickness which is roughly equal to the gap between nucleobases. However, high noise level hampers applications of graphene nanopore sensors, especially at low frequencies. In this article, we report on a study of the contribution of suspended graphene area to noise level in full frequency band. Monolayer graphene films are transferred onto SiNx substrates preset with holes in varied diameters and formed self-supported films. After that, the films are perforated with smaller, nanoscale holes. Experimental studies indicate a dependency of low-frequency 1/f noise on the underlying SiNx geometry. The contribution of the suspended graphene area to capacitance which affects the noise level in the high frequency range reveals that the graphene free-standing film area influences noise level over a wide frequency region. In addition, the low-frequency noise demonstrates a weak dependency on salt concentration, in deviation from Hooge’s relation. These findings and attendant analysis provide a systematic understanding of the noise characteristics and can serve as a guide to designing free-standing monolayer graphene nanopore devices. View Full-Text
Keywords: monolayer graphene; solid-state nanopore; suspended area; noise; power spectral density monolayer graphene; solid-state nanopore; suspended area; noise; power spectral density
Show Figures

Figure 1

MDPI and ACS Style

Zhang, Z.-Y.; Deng, Y.-S.; Tian, H.-B.; Yan, H.; Cui, H.-L.; Wang, D.-Q. Noise Analysis of Monolayer Graphene Nanopores. Int. J. Mol. Sci. 2018, 19, 2639.

Show more citation formats Show less citations formats
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

Back to TopTop