Diffusiophoresis: a novel transport mechanism - fundamentals, applications, and future opportunities
Diffusiophoresis: a novel transport mechanism - fundamentals, applications, and future opportunities
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DOI：
10.3389/fsens.2023.1322906
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发表时间：
2023-11
期刊：
影响因子：
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通讯作者：
Arkava Ganguly;Benjamin M. Alessio;Ankur Gupta
中科院分区：
文献类型：
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作者：
Arkava Ganguly;Benjamin M. Alessio;Ankur Gupta
扩散电泳涉及响应于溶质的浓度梯度的胶体尺度实体的移动。它大致分为两种类型：被动和主动扩散电泳。在被动扩散电泳中，外部浓度梯度驱动运动，而在主动扩散电泳中，胶体实体本身有助于产生梯度。从这个角度来看，我们深入研究了被动和主动扩散电泳的基本过程，并强调如何普遍的两种扩散电泳在胶体和自然系统。特别是，我们强调了被动扩散电泳中的胶体聚焦功能，并讨论了它如何支撑各种实验观察和应用，如低成本zetasizer，水过滤和生物模式的形成。对于主动扩散电泳，我们强调颗粒轨迹对其形状和表面异质性的依赖性，并讨论这如何决定诸如药物递送、去除微塑料和自修复材料等应用。最后，我们提供了关于扩散电泳未来机会的见解和想法。
Diffusiophoresis involves the movement of colloidal-scale entities in response to concentration gradients of a solute. It is broadly categorized into two types: passive and active diffusiophoresis. In passive diffusiophoresis, external concentration gradients drive the motion, while in active diffusiophoresis, the colloidal entity itself assists in generating the gradients. In this perspective, we delve into the fundamental processes underlying passive and active diffusiophoresis and emphasize how prevalent both kinds of diffusiophoresis are in colloidal and natural systems. In particular, we highlight the colloidal focusing feature in passive diffusiophoresis and discuss how it underpins the variety of experimental observations and applications such as low-cost zetasizers, water filtration, and biological pattern formation. For active diffusiophoresis, we emphasize the dependence of particle trajectory on its shape and surface heterogeneity, and discuss how this dictates the applications such as drug delivery, removal of microplastics, and self-repairing materials. Finally, we offer insights and ideas regarding future opportunities in diffusiophoresis.