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Dataset for the paper High durability and stability of 2D nanofluidic devices for long-term single-molecule sensing

Nianduo Cai, Andrey Chernev, Andras Kis, Martina Lihter, Michal Daniel Macha, Aleksandra Radenovic, Yunfei Teng, Mukeshchand Thakur, Mukesh Kumar Tripathi, Miao Zhang, Yanfei Zhao

Information regarding the Dataset, corresponding to the paper: “Thakur, M., Cai, N., Zhang, M. et al. High durability and stability of 2D nanofluidic devices for long-term single-molecule sensing. npj 2D Mater Appl 7, 11 (2023). https://doi.org/10.1038/s41699-023-00373-5” This folder contains the raw data and complete package of codes used to analyze, view, save, and plot data for the publication titled "High durability and stability of 2D nanofluidic devices for long-term single-molecule sensing". The code folder, "OpenNanopore-nanopore-tools", can be used to plot raw data which corresponds to the figures in the paper and supplementary information.

EPFL Infoscience2023

Direct Growth of Hexagonal Boron Nitride on Photonic Chips for High-Throughput Characterization

Andrey Chernev, Jean Camille Benjamin Comtet, Evgenii Glushkov, Martina Lihter, Vytautas Navikas, Aleksandra Radenovic, Reza Zamani

Adapting optical microscopy methods for nanoscale characterization of defects in two-dimensional (2D) materials is a vital step for photonic on-chip devices. To increase the analysis throughput, waveguide-based on-chip imaging platforms have been recently developed. Their inherent disadvantage, however, is the necessity to transfer the 2D material from the growth substrate to the imaging chip, which introduces nonuniform material coverage and contamination, potentially altering the characterization results. Here we present a unique approach to circumvent these shortfalls by directly growing a widely used 2D material (hexagonal boron nitride, hBN) on silicon nitride chips and optically characterizing the defects in the intact as-grown material. We compare the direct growth approach to the standard PMMA-assisted wet transfer method and confirm the clear advantages of the direct growth. While demonstrated with hBN in the current work, the method can be extended to other 2D materials.

AMER CHEMICAL SOC2021

Wetting of nanopores probed with pressure

Andrey Chernev, Sebastian James Davis, Michal Daniel Macha, Sanjin Marion, Aleksandra Radenovic

Nanopores are both a tool to study single-molecule biophysics and nanoscale ion transport, but also a promising material for desalination or osmotic power generation. Understanding the physics underlying ion transport through nano-sized pores allows better design of porous membrane materials. Material surfaces can present hydrophobicity, a property which can make them prone to formation of surface nanobubbles. Nanobubbles can influence the electrical transport properties of such devices. We demonstrate an approach which uses hydraulic pressure to probe the electrical transport properties of solid state nanopores. We show how pressure can be used to wet pores, and how it allows control over bubbles or other contaminants in the nanometer scale range normally unachievable using only an electrical driving force. Molybdenum disulfide is then used as a typical example of a 2D material on which we demonstrate wetting and bubble induced nonlinear and linear conductance in the regimes typically used with these experiments. We show that by using pressure one can identify and evade wetting artifacts.

ROYAL SOC CHEMISTRY2021