Measurements of the size and correlations between ions using an electrolytic point contact
| Autor: | Jae Hyun Park, Narayana R. Aluru, Lisa Almonte-Garcia, Mohammad Hokmabadi, Li Ding, Zhuxin Dong, E. Rigo, Gregory Timp, Eamonn Kennedy |
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| Rok vydání: | 2019 |
| Předmět: |
0301 basic medicine
Materials science Science General Physics and Astronomy 02 engineering and technology Electrolyte Molecular physics Article General Biochemistry Genetics and Molecular Biology Ion Nanopores 03 medical and health sciences Surfaces interfaces and thin films lcsh:Science Nanoscale materials Multidisciplinary Spectral density Conductance Nanometrology General Chemistry Gauge (firearms) 021001 nanoscience & nanotechnology Nanoscale devices 030104 developmental biology Solvation shell lcsh:Q Current (fluid) 0210 nano-technology Noise (radio) |
| Zdroj: | Nature Communications, Vol 10, Iss 1, Pp 1-13 (2019) Nature Communications |
| ISSN: | 2041-1723 |
| Popis: | The size of an ion affects everything from the structure of water to life itself. In this report, to gauge their size, ions dissolved in water are forced electrically through a sub-nanometer-diameter pore spanning a thin membrane and the current is measured. The measurements reveal an ion-selective conductance that vanishes in pores The size of an ion affects everything from the structure of water to life itself. Here, a sub-nanometer diameter pore sputtered through a thin silicon nitride membrane is used to systematically test ion permeability by measuring the electrolytic current and current noise and show that the ions move with a grossly distorted hydration shell in a correlated way. |
| Databáze: | OpenAIRE |
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