Multiple Negative Differential Resistances in Nanofluidic Conical Pores: A Phenomenological Model
[EN] Ionic flow nonlinear effects are helpful for sensing and signal processing in nanofluidic systems. Here, we develop a simple phenomenological model based on a distribution of Boltzmann-like electrical conductances to describe different forms of voltage-controlled negative differential resistanc...
| Autores: | , , , , , , |
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| Tipo de recurso: | artículo |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/231081 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/231081 |
| Access Level: | acceso abierto |
| Palabra clave: | Nanofluidic systems Ionic transport Negative differential resistance Conical nanopores Phenomenological modeling Signal processing |
| Sumario: | [EN] Ionic flow nonlinear effects are helpful for sensing and signal processing in nanofluidic systems. Here, we develop a simple phenomenological model based on a distribution of Boltzmann-like electrical conductances to describe different forms of voltage-controlled negative differential resistance observed in charged conical nanopores. Multiple negative differential resistance phenomena show abrupt drops in the ionic current when the applied voltage exceeds a series of threshold voltages. We use the phenomenological model to describe the multiple states resulting from externally controlled salt precipitation at the conical pore tips. We consider both single- and multipore membranes, together with parallel and antiparallel arrangements of two membranes, as a function of the applied voltage, salt type, ionic concentration, and temperature. |
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