Particle Size Determines the Shape of Supraparticles in Self-Lubricating Ternary Droplets.

ABSTRACT: Supraparticles are large clusters of much smaller colloidal particles. Controlling the shape and anisotropy of supraparticles can enhance their functionality, enabling applications in fields such as optics, magnetics, and medicine. The evaporation of self-lubricating colloidal ouzo droplets is an easy and efficient strategy to create supraparticles, overcoming the problem of the "coffee-stain effect" during drop evaporation. Yet, the parameters that control the shape of the supraparticles formed in such evaporating droplets are not fully understood. Here, we show that the size of the colloidal particles determines the shape of the supraparticle. We compared the shape of the supraparticles made of seven different sizes of spherical silica particles, namely from 20 to 1000 nm, and of the mix

SUBMITTER: Thayyil Raju L 

PROVIDER: S-EPMC8023807 | biostudies-literature | 2021 Mar

REPOSITORIES: biostudies-literature