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Abstract
Nanopores in two-dimensional (2D) membranes show great promise in single-molecule sensing, osmotic power generation, and information storage. This research identifies chemical oxidation and delamination of monolayer MoS2 from substrates as major causes of nanopore instability. Surface modification of the substrate and oxygen reduction in the measurement solution significantly enhance nanopore stability and extend device lifespan. The findings provide insights for controlling pore size and shape, enabling long-term measurements with high signal-to-noise ratios and the engineering of durable nanopore devices.
Publisher
npj 2D Materials and Applications
Published On
Feb 23, 2023
Authors
Mukeshchand Thakur, Nianduo Cai, Miao Zhang, Yunfei Teng, Andrey Chernev, Mukesh Tripathi, Yanfei Zhao, Michal Macha, Farida Elharouni, Martina Lihter, Liping Wen, Andras Kis, Aleksandra Radenovic
Tags
nanopores
two-dimensional membranes
MoS2
device stability
single-molecule sensing
surface modification
chemical oxidation

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