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Solid-state nanopore sensors
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DOI：10.1038/s41578-020-0229-6.png)
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Nanopore sensors enable the solution-based analysis of nucleic acids, proteins and other biomolecules at the single-molecule level. This Review discusses new fabrication and sensing strategies - including field-effect transistors, quantum tunnelling and optical methods - that enhance the sensitivity and selectivity of nanopores. Nanopore-based sensors have established themselves as a prominent tool for solution-based, single-molecule analysis of the key building blocks of life, including nucleic acids, proteins, glycans and a large pool of biomolecules that have an essential role in life and healthcare. The predominant molecular readout method is based on measuring the temporal fluctuations in the ionic current through the pore. Recent advances in materials science and surface chemistries have not only enabled more robust and sensitive devices but also facilitated alternative detection modalities based on field-effect transistors, quantum tunnelling and optical methods such as fluorescence and plasmonic sensing. In this Review, we discuss recent advances in nanopore fabrication and sensing strategies that endow nanopores not only with sensitivity but also with selectivity and high throughput, and highlight some of the challenges that still need to be addressed.
Keyword:
SINGLE-MOLECULE DETECTION
ATOMIC LAYER DEPOSITION
DESIGNED DNA CARRIERS
RESISTIVE-PULSE MEASUREMENTS
LABEL-FREE
GRAPHENE NANORIBBON
PLASMONIC NANOPORE
ALPHA-HEMOLYSIN
ELECTRON-BEAM
NANOPIPETTES DETECTION
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