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Assembly and Characterization of Biomolecular Memristors Consisting of Ion Channel-doped Lipid Membranes
Published on: March 9, 2019
El potencial de transmembrana a través de nanoporos cónicos individuales y el transporte de iones memristivo y
Dengchao Wang1, Maksim Kvetny, Juan Liu
1Department of Chemistry, Georgia State University, Atlanta, Georgia 30302, USA.
Journal of the American Chemical Society
|February 9, 2012
Resumen
Los nanoporos cónicos individuales exhiben un comportamiento memristivo debido a los efectos de memoria de transporte de iones. Este fenómeno de transporte de iones es dependiente de la concentración, ofreciendo información sobre los dispositivos electrónicos a nanoescala.
Área de la Ciencia:
- Nanotecnología La nanotecnología es la nanotecnología.
- Ciencia de los materiales Ciencia de los materiales.
- Química Física es la química física.
Sus antecedentes:
- Los dispositivos memristivos y memcapacitivos son cruciales para la electrónica de próxima generación.
- Comprender el transporte de iones en geometrías confinadas es clave para el diseño de nuevos dispositivos.
Objetivo del estudio:
- Para investigar los comportamientos memristivos y memcapacitivos en nanoporos cónicos individuales.
- Para aclarar los mecanismos subyacentes del transporte de iones y los efectos de memoria.
Principales métodos:
- Fabricación de nanoporos cónicos individuales en el sustrato SiO(2).
- Mediciones del transporte de iones utilizando la caracterización corriente-voltaje (i-V).
- Análisis de bucles de histeresis a diferentes velocidades de exploración y concentraciones de electrolitos.
Principales resultados:
- Corriente dependiente de la historia observada (efecto memoria) en el transporte de iones.
- Identificó un potencial de punto cruzado constante que separa los bucles de histeresis normal y negativa.
- Se estableció una correlación cuantitativa entre el potencial de punto cruzado y la concentración de electrolitos.
Conclusiones:
- La movilidad de iones finitos dentro del nanoporo cargado explica los efectos de memoria observados.
- El transporte de iones de nanoporo exhibe características de memoria ajustables.
- La concentración de electrolitos es un parámetro crítico para controlar el comportamiento del dispositivo de nanoporo.
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