Biphasic concentration patterns in ionic transport under nanoconfinement revealed in steady-state and time-dependent properties
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Otros documentos de la autoría: Queralt-Martín, María; Perez-Grau, Jose J.; Alvero González, Laidy Maidel; Perini, Deborah Aurora; Cervera, Javier; Aguilella, Vicente; Alcaraz, Antonio
Metadatos
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Título
Biphasic concentration patterns in ionic transport under nanoconfinement revealed in steady-state and time-dependent propertiesAutoría
Fecha de publicación
2023-02-08Editor
American Institute of PhysicsISSN
0021-9606; 1089-7690Cita bibliográfica
Queralt-Martín, M., Pérez-Grau, J. J., González, L. M. A., Perini, D. A., Cervera, J., Aguilella, V. M., & Alcaraz, A. (2023). Biphasic concentration patterns in ionic transport under nanoconfinement revealed in steady state and time-dependent properties. Biophysical Journal, 122(3), 223a-224a.Tipo de documento
info:eu-repo/semantics/articleVersión
info:eu-repo/semantics/acceptedVersionPalabras clave / Materias
Resumen
Ion permeation across nanoscopic structures differs considerably from microfluidics because of strong steric constraints, transformed solvent properties, and charge-regulation effects revealed mostly in diluted ... [+]
Ion permeation across nanoscopic structures differs considerably from microfluidics because of strong steric constraints, transformed solvent properties, and charge-regulation effects revealed mostly in diluted solutions. However, little is known about nanofluidics in moderately concentrated solutions, which are critically important for industrial applications and living systems. Here, we show that nanoconfinement triggers general biphasic concentration patterns in a myriad of ion transport properties by using two contrasting systems: a biological ion channel and a much larger synthetic nanopore. Our findings show a low-concentration regime ruled by classical Debye screening and another one where ion–ion correlations and enhanced ion–surface interactions contribute differently to each electrophysiological property. Thus, different quantities (e.g., conductance vs noise) measured under the same conditions may appear contradictory because they belong to different concentration regimes. In addition, non-linear effects that are barely visible in bulk conductivity only in extremely concentrated solutions become apparent in nanochannels around physiological conditions. [-]
Publicado en
J. Chem. Phys. 158, 064701 (2023)Datos relacionados
https://pubs.aip.org/jcp/article-supplement/2875298/zip/064701_1_epaps/Entidad financiadora
MCIN/AEI/ 10.13039/501100011033 | Universitat Jaume I | Generalitat Valenciana
Código del proyecto o subvención
Project 2019-108434GB-I00 to A.A | IJC2018-035283- I to M.Q.M. | UJI-B2022-42 | UJI-A2020-21 | GRISOLIAP/2018/061 | AICO/2020/066
Derechos de acceso
© 2023 Author(s). Published under an exclusive license by AIP Publishing.
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info:eu-repo/semantics/openAccess
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