Wetting of nanopores probed with pressure
| Autor: | Sebastian J. Davis, Sanjin Marion, Aleksandra Radenovic, Andrey Chernev, Michal Macha |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Materials science
Bubble FOS: Physical sciences General Physics and Astronomy Conductance 02 engineering and technology Condensed Matter - Soft Condensed Matter 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 7. Clean energy 0104 chemical sciences chemistry.chemical_compound Nanopore chemistry Chemical physics Osmotic power Soft Condensed Matter (cond-mat.soft) Nanometre Wetting Physical and Theoretical Chemistry 0210 nano-technology Molybdenum disulfide Nanoscopic scale |
| Zdroj: | Physical Chemistry Chemical Physics |
| ISSN: | 1463-9076 |
| DOI: | 10.1039/d1cp00253h |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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