Patchy Particle Behavior Near Interfaces

这一建议试图阐明界面附近自推进的Janus粒子的行为，使用分子动力学来检查布朗运动、溶质浓度梯度、运动诱导的流体流动和不对称力场的反平衡影响。皮？S根据他们的实验和理论背景划分了主要职责，但也与其他大学的其他实验室在其他技术方面进行了合作(例如使用胶体探针原子力显微镜)。该研究计划弥合了原子水平模拟和胶体尺度模拟之间的差距，具有很强的创新性和挑战性。这样的研究结果应该在复杂流体和微流控设备中的颗粒混合、组装和传输方面有广泛的应用。对设计者材料的配方和定向自组装中的活性材料的潜在发展的更广泛的影响，以及在用于货物和药物输送的单芯片实验室类型的设备中使用自推进颗粒，以及它们扩展到未被充分代表的大学水平的学生的潜在影响是非常好的。

This proposal seeks to elucidate the behavior of self-propelled Janus particles near interfaces, using molecular dynamics to examine the countervailing influences of Brownian motion, solute concentration gradient, motion-induced fluid flow, and asymmetric force fields. The PI?s divide the main responsibilities according to their experimental and theoretical affiliations, but there are also collaborations with other laboratories in other universities for other techniques (e.g. using colloidal probe atomic force microscopy). The research plan bridges the gap between atomic-level simulations and colloidal-scale modeling and is very innovative and challenging. The results of such an investigation should have broad applications in mixing, assembling, and transport of particles in complex fluids and microfluidic devices.The broader impacts on potential development of active materials in the formulation and directed self-assembly of designer materials, and the use of self-propelled particles in lab-on-a-chip type devices for cargo and drug delivery are very good as is the potential impact of their outreach to underrepresented college-level students.