Double barrel nanopores as a new tool for controlling single-molecule transport
Author(s)
Type
Journal Article
Abstract
The ability to control the motion of single biomolecules is key to improving a wide range of biophysical and diagnostic applications. Solid-state nanopores are a promising tool capable of solving this task. However, molecular control and the possibility of slow readouts of long polymer molecules are still limited due to fast analyte transport and low signal-to-noise ratios. Here, we report on a novel approach of actively controlling analyte transport by using a double-nanopore architecture where two nanopores are separated by only a ∼ 20 nm gap. The nanopores can be addressed individually, allowing for two unique modes of operation: (i) pore-to-pore transfer, which can be controlled at near 100% efficiency, and (ii) DNA molecules bridging between the two nanopores, which enables detection with an enhanced temporal resolution (e.g., an increase of more than 2 orders of magnitude in the dwell time) without compromising the signal quality. The simplicity of fabrication and operation of the double-barrel architecture opens a wide range of applications for high-resolution readout of biological molecules.
Date Issued
2018-04-11
Date Acceptance
2018-03-23
Citation
Nano Letters, 2018, 18 (4), pp.2738-2745
ISSN
1530-6984
Publisher
American Chemical Society
Start Page
2738
End Page
2745
Journal / Book Title
Nano Letters
Volume
18
Issue
4
Copyright Statement
© 2018 American Chemical Society.
Sponsor
Engineering & Physical Science Research Council (EPSRC)
Commission of the European Communities
Imperial College London
Biotechnology and Biological Sciences Research Council (BBSRC)
Identifier
https://pubs.acs.org/doi/10.1021/acs.nanolett.8b00860
Grant Number
EP/P011985/1
724300
BB/R022429/1
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Multidisciplinary
Chemistry, Physical
Nanoscience & Nanotechnology
Materials Science, Multidisciplinary
Physics, Applied
Physics, Condensed Matter
Chemistry
Science & Technology - Other Topics
Materials Science
Physics
Single-molecule sensing
double nanopore architecture
biophysics
SOLID-STATE NANOPORES
DNA TRANSLOCATION
IDENTIFICATION
GRAPHENE
CHANNEL
Single-molecule sensing
biophysics
double nanopore architecture
DNA
Electrodes
Motion
Nanopores
Nanotechnology
DNA
Electrodes
Nanotechnology
Motion
Nanopores
Nanoscience & Nanotechnology
Publication Status
Published
Date Publish Online
2018-03-23