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La paradoja de Braess y el comportamiento programable en redes microfluidas
Daniel J Case1, Yifan Liu2, István Z Kiss2
1Department of Physics and Astronomy, Northwestern University, Evanston, IL, USA.
Nature
|October 25, 2019
Resumen
Los investigadores diseñaron nuevas redes microfluídicas con un comportamiento de flujo no lineal. Esta innovación permite el control integrado de dispositivos microfluídicos, allanando el camino para sistemas portátiles avanzados.
Área de la Ciencia:
- Dinámica de fluidos
- Microfluidos
- Sistemas no lineales
Sus antecedentes:
- Los sistemas microfluídicos requieren dispositivos externos para el control debido al flujo lineal.
- La falta de control integrado dificulta el desarrollo de aplicaciones microfluidas complejas.
Objetivo del estudio:
- Diseñar redes microfluidas con relaciones no lineales de presión y flujo.
- Para permitir el control de flujo integrado mediante la manipulación de las presiones de entrada/salida.
Principales métodos:
- Implementación de redes microfluidas utilizando canales rígidos de polímeros.
- Investigación experimental de la dinámica del flujo de agua bajo presiones variables.
- Análisis del comportamiento de flujo análogo a la paradoja de Braess.
Principales resultados:
- Se ha demostrado la relación presión-flujo no lineal en redes microfluidas.
- Análogo fluido observado de la paradoja de Braess: el cierre de un canal aumenta el flujo total.
- Mostró capacidades de enrutamiento de flujo escalables con múltiples conmutadores.
Conclusiones:
- Las redes microfluídicas no lineales ofrecen una vía hacia mecanismos de control integrados.
- Potencial para el desarrollo de sistemas portátiles avanzados en el cuidado de la salud y la exploración espacial.
- Facilita nuevas aplicaciones que requieren una manipulación sofisticada de fluidos a microescala.
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