摘要
针对一种新型的可用于气动微流控芯片气压控制的电磁致动微阀的进一步研究和应用问题,在阐述了其结构和工作原理的基础上,利用AMESim软件建立了相应的动态仿真模型,对其流量、压力动态特性进行了分析,并且给出了该种微阀和传统气动电磁阀的流量、压力动态特性的对比分析结果。该种新型的电磁致动微阀由微流控芯片的上层PDMS平膜、具有微流道的下层PDMS厚膜和电磁致动器构成,电磁致动器通过安装在阀座上的玻璃片与PDMS微流控芯片实现了集成。而且,采用这种集成化的新型微阀的控制方式相较于传统采用气动电磁阀的控制方式,具有成本低、体积小、易于与微流控芯片集成等优点。研究结果表明,采用这种新型PDMS微阀对微流控芯片进行驱动和控制可以获得较好的动态特性,并且该研究对电磁致动微阀的进一步研究和应用提供了一定的理论指导。
Aiming at further researches and applications of a new type microvalve which can be used in pneumatic pressure control for lab-ona-chip applications,on the basis of descriptions of its structure and working principle,an analysis of its flow and pressure dynamic characteristics,a corresponding simulation model with the use of the software AMESim and dynamic simulation were carried out.As a comparison a same analysis of traditional solenoid valve was given,as well.The new type microvalve is made up of upper layer PDMS tlat film,lower layer PDMS thick film with microchannels in microfluidic chip and electromagnetic actuator.The electromagnetic actuator was integrated into the PDMS microfluidic chip by bonding the glass on the valve seat to the PDMS chip.Besides,the new PDMS microvalve＇s advantages such as lower cost,smaller size and easier integration with the microfluidic chip and so on than the traditional control method with pneumatic solenoid valves were described.The results indicate that it has good dynamic characteristics to drive and control the microfluidic chip with the new PDMS microvalve and provide a theoretical guidance for further researches and applications of this microvalve.
出处
《机电工程》
CAS
2014年第9期1103-1106,共4页
Journal of Mechanical & Electrical Engineering
基金
国家自然科学基金资助项目(51175101)
