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Separación de fases activa desencadenada por defectos quimiotácticos
Yujuan Song1, Feifei Liu1, Qingqing Yin1
1MOE Key Laboratory of Advanced Micro-Structured Materials, School of Physics Science and Engineering, Tongji University, Shanghai 200092, China.
The Journal of chemical physics
|February 23, 2026
Resumen
Los defectos en las suspensiones activas desencadenan rápidamente la agregación de partículas, lo que permite la separación de fases inducida por la motilidad (MIPS) incluso a bajas densidades. Este mecanismo puede explicar la formación de biopelículas bacterianas.
Sus antecedentes:
- La separación de fases inducida por la motilidad (MIPS) es un fenómeno clave en la materia activa.
- Lograr MIPS a bajas densidades de partículas (región binodal) es computacionalmente desafiante.
- Los modelos existentes a menudo requieren altas fracciones de empaquetamiento o largos tiempos de simulación.
Conclusiones:
- La agregación inducida por defectos proporciona una vía eficiente para MIPS a bajas densidades.
- Este mecanismo ofrece una explicación potencial para la agregación bacteriana en biopelículas.
- Las partículas de nutrientes pueden servir como atractores quimiotácticos, de manera similar a los defectos en modelos físicos.
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