Microfluidic pool structure for cell docking and rapid mixing |
| |
Authors: | Jun Yang Jing Yang Zheng-Qin Yin Irina Svir Hong-Yan Luo Yi Cao Yan-Jian Liao |
| |
Institution: | a Bioengineering College, Chongqing University, Chongqing 400030, PR China b Southwest Eye Hospital, Southwest Hospital, Third Military Medical University, Chongqing 400038, PR China c Department of Information Engineering Chongqing communication College, Chongqing 400035, PR China d Kharkov Natl Univ Radioelect, Math & Comp Modelling Lab, UA-61166 Kharkov, Ukraine |
| |
Abstract: | A microfluidic pool structure for cell docking and rapid mixing is described. The pool structure is defined as a microchamber on one structural layer of a bilayer chip and connects with two or more individual microchannels on the other structural layer. In contrast to the turbulent flow in a macroscale pool, laminar streams enter and exit this microfluidic pool structure with definite and controllable direction that may be influenced by the location and geometry of the pool. A simple microfluidic model was used to validate this hypothesis. In this model, a microscale pool structure was made on the lower layer of a chip and connected with three parallel microchannels in the upper layer. Simulation and experimental results indicated that the flow profile within the pool structure was determined by its geometry and location. This could be used as a flow control method and it was simpler than designs based on microvalve, hydraulic pressure, or electrokinetic force, and has some important applications. For example, controllable streams within this structure were used to immobilize biological cells along the microchannel walls. When different solution streams flowed through the pool, rapid diffusion of analytes occurred for short diffusion distance between vertical flow laminas. Furthermore, desired dilution (mixing) ratio could be obtained by controlling the geometry of the microfluidic pool. |
| |
Keywords: | Microfluidic Pool structure Cell docking Mixing Polydimethylsiloxane |
本文献已被 ScienceDirect 等数据库收录! |
|