论文标题
CO $ _2 $驱动的延伸植物用于去除细菌
CO$_2$-driven diffusiophoresis for removal of bacteria
论文作者
论文摘要
我们研究了Hele-Shaw几何形状中胶体颗粒和细菌细胞的CO $ _2 $驱动的扩散。结合了实验和模型，我们了解了CO $ _2 $驱动的分散型的特征长度和时间尺度与系统尺寸和CO $ _2 $扩散率有关。野生型V.霍乱和缺乏鞭毛的突变体的定向迁移，以及金黄色葡萄球菌和铜绿假单胞菌，靠近溶解的Co $ _2 $来源表明，细菌的扩张层是独立于细胞形状和革兰氏染色的。长期的实验表明，细菌扩散层的可能应用到清洁系统或抗双重表面。
We investigate CO$_2$-driven diffusiophoresis of colloidal particles and bacterial cells in a Hele-Shaw geometry. Combining experiments and a model, we understand the characteristic length and time scales of CO$_2$-driven diffusiophoresis in relation to system dimensions and CO$_2$ diffusivity. Directional migration of wild-type V. cholerae and a mutant lacking flagella, as well as S. aureus and P. aeruginosa, near a dissolving CO$_2$ source shows that diffusiophoresis of bacteria is achieved independent of cell shape and Gram stain. Long-time experiments suggest possible applications for bacterial diffusiophoresis to cleaning systems or anti-biofouling surfaces.
