Anisometric silica supraparticles are produced by a simple process of evaporation of sessile droplets containing fumed silica deposited on a superhydrophobic substrate. The shape of the supraparticles is directly controlled by the salt (NaCl) concentration, becoming anisometric beyond a threshold concentration, as quantified by light microscopy. This process is easily extended to supraparticles containing further functional colloidal components.

中文翻译：

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通过离子强度控制蒸发液滴的形状：高度不等距的二氧化硅超颗粒的形成

等距二氧化硅超颗粒是通过蒸发包含沉积在超疏水性基质上的气相法二氧化硅的无固定液滴的简单方法来生产的。超微粒子的形状直接受盐（NaCl）浓度控制，超出光学显微镜所定量的阈值浓度，变得不等轴测。该过程很容易扩展到含有其他功能胶体成分的超颗粒。