Nilsson Sara, Erlandsson Per G, Robinson Nathaniel D
Transport and Separations Group, Department of Physics, Chemistry and Biology, Linköping University, Linköping, Sweden.
PLoS One. 2015 Dec 2;10(12):e0144065. doi: 10.1371/journal.pone.0144065. eCollection 2015.
Electroosmotic pumps employing silica frits synthesized from potassium silicate as a stationary phase show strong electroosmotic flow velocity and resistance to pressure-driven flow. We characterize these pumps and measure an electroosmotic mobility of 2.5 × 10(-8) m(2)/V s and hydrodynamic resistance per unit length of 70 × 10(17) Pa s/m(4) with a standard deviation of less than 2% even when varying the amount of water used in the potassium silicate mixture. Furthermore, we demonstrate the simple integration of these pumps into a proof-of-concept PDMS lab-on-a-chip device fabricated from a 3D-printed template.
采用由硅酸钾合成的二氧化硅烧结体作为固定相的电渗泵表现出强大的电渗流速和对压力驱动流的抗性。我们对这些泵进行了表征，测量得到电渗迁移率为2.5×10⁻⁸ m²/V·s，单位长度的流体动力学阻力为70×10¹⁷ Pa·s/m⁴，即使改变硅酸钾混合物中所用水的量，标准偏差也小于2%。此外，我们展示了将这些泵简单集成到一个由3D打印模板制造的概念验证PDMS芯片实验室设备中的过程。
