Journal
NANOMATERIALS
Volume 6, Issue 6, Pages -Publisher
MDPI
DOI: 10.3390/nano6060111
Keywords
molecular dynamics simulation; hexagonal boron nitride; ssDNA sequencing
Categories
Funding
- National Science Foundation
- University of Georgia (UGA) start-up fund
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [1306065] Funding Source: National Science Foundation
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The single molecule detection associated with DNA sequencing has motivated intensive efforts to identify single DNA bases. However, little research has been reported utilizing single-layer hexagonal boron nitride (hBN) for DNA sequencing. Here we employ molecular dynamics simulations to explore pathways for single-strand DNA (ssDNA) sequencing by nanopore on the hBN sheet. We first investigate the adhesive strength between nucleobases and the hBN sheet, which provides the foundation for the hBN-base interaction and nanopore sequencing mechanism. Simulation results show that the purine base has a more remarkable energy profile and affinity than the pyrimidine base on the hBN sheet. The threading of ssDNA through the hBN nanopore can be clearly identified due to their different energy profiles and conformations with circular nanopores on the hBN sheet. The sequencing process is orientation dependent when the shape of the hBN nanopore deviates from the circle. Our results open up a promising avenue to explore the capability of DNA sequencing by hBN nanopore.
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