The DOI matches its Crossref record; 43 of the 43 references it cites were found in a registry or an index.
DNA Base Detection Using a Single-Layer MoS2
Abstract
Nanopore-based DNA sequencing has led to fast and high-resolution recognition and detection of DNA bases. Solid-state and biological nanopores have low signal-to-noise ratio (SNR) (< 10) and are generally too thick (> 5 nm) to be able to read at single-base resolution. A nanopore in graphene, a 2-D material with sub-nanometer thickness, has a SNR of ∼3 under DNA ionic current. In this report, using atomistic and quantum simulations, we find that a single-layer MoS2 is an extraordinary material (with a SNR > 15) for DNA sequencing by two competing technologies (i.e., nanopore and nanochannel). A MoS2 nanopore shows four distinct ionic current signals for single-nucleobase detection with low noise. In addition, a single-layer MoS2 shows a characteristic change/response in the total density of states for each base. The band gap of MoS2 is significantly changed compared to other nanomaterials (e.g., graphene, h-BN, and silicon nanowire) when bases are placed on top of the pristine MoS2 and armchair MoS2 nanoribbon, thus making MoS2 a promising material for base detection via transverse current tunneling measurement. MoS2 nanopore benefits from a craftable pore architecture (combination of Mo and S atoms at the edge) which can be engineered to obtain the optimum sequencing signals.
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Metadata
- Authors
- Farimani, A. B., Min, K., & Aluru, N. R.
- Venue
- ACS Nano
- Publisher
- American Chemical Society (ACS)
- Published
- 2014-07-15
- Volume
- 8
- Issue
- 8
- Pages
- 7914-7922
- ISSN
- 1936-0851 (ISSN-L)
- 1936-086X
- OpenAlex
- W2319363320
- Cited by
- 355
- References
- 43
- FWCI
- 18.04
- Type
- journal article
- Language
- en
- Open access
- closed
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