装甲液滴中的屈曲
Buckling in Armored Droplets
摘要：
利用耗散粒子动力学模拟，在介观水平上解决了由固体颗粒（装甲液滴）稳定的液滴中的屈曲机制问题。我们考虑在癸烷溶剂中的球形水滴涂覆有两种不同类型的纳米颗粒单层：Janus和均匀。所选择的颗粒产生可比较的初始三相接触角，选择该接触角以使界面处的吸附能最大化。我们研究了液滴形状的演变，分层的颗粒，它们的分布在界面上的液滴的体积减少时，之间的相互作用。我们发现，Janus粒子强烈影响的形状的液滴形成一个火山口般的抑郁症。这种演变是积极控制的紧密堆积的颗粒单层在弯曲的界面。相反，均匀的颗粒被动地跟随液滴的体积减小，其形状不会偏离球形太多，即使当在界面处检测到纳米颗粒单层/双层过渡时。我们讨论了这些屈曲装甲液滴可能是相关的各种应用，包括潜在的药物输送系统和功能表面的仿生设计。
英文摘要：
The issue of the buckling mechanism in droplets stabilized by solid particles (armored droplets) is tackled at a mesoscopic level using dissipative particle dynamics simulations. We consider spherical water droplet in a decane solvent coated with nanoparticle monolayers of two different types: Janus and homogeneous. The chosen particles yield comparable initial three-phase contact angles, chosen to maximize the adsorption energy at the interface. We study the interplay between the evolution of droplet shape, layering of the particles, and their distribution at the interface when the volume of the droplets is reduced. We show that Janus particles affect strongly the shape of the droplet with the formation of a crater-like depression. This evolution is actively controlled by a close-packed particle monolayer at the curved interface. On the contrary, homogeneous particles follow passively the volume reduction of the droplet, whose shape does not deviate too much from spherical, even when a nanoparticle monolayer/bilayer transition is detected at the interface. We discuss how these buckled armored droplets might be of relevance in various applications including potential drug delivery systems and biomimetic design of functional surfaces.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
