The influence of geometry on the flow rate sensitivity to applied voltage within cone-jet mode electrospray
The influence of geometry on the flow rate sensitivity to applied voltage within cone-jet mode electrospray
复制标题
锥射流模式电喷雾中几何形状对施加电压的流量敏感性的影响
DOI：
10.1063/1.4768451
复制
发表时间：
2012
影响因子：
3.2
通讯作者：
J. Stark
中科院分区：
文献类型：
--
作者：
C. Ryan;K. Smith;J. Stark
这项工作比以前的研究更详细地研究了几何形状对锥射流模式电喷雾系统中发射流量和施加电势差之间关系的影响。流量与电压关系的大小被证明对许多几何参数敏感。提供了对这种变化的解释；结果表明，在锥射流操作模式下，流速随施加的提取电压的变化是由于发射器尖端的电场变化造成的。通过对假定静电过程的有限元方法模拟，分析进一步扩展到包括所有几何参数。概述的结果表明，在锥射流模式电喷雾中，流量随施加电压的变化可能是显着的。在某些条件下，这种依赖性将对电喷雾流量产生相当大的影响，从而对电流和液滴尺寸产生相当大的影响。这对电喷雾应用产生影响......
This work investigates in greater detail than in previous studies the effect of geometry on the relationship between emitted flow rate and applied potential difference in cone-jet mode electrospray systems. The magnitude of the flow rate to voltage relationship is demonstrated to be sensitive to numerous geometric parameters. An explanation of this variation is offered; it is demonstrated that in the cone-jet mode of operation the change of flow rate with the applied extraction voltage is due to the change in electric field at the tip of the emitter. By a finite element method simulation of the assumed electrostatic process the analysis is further extended to include all geometric parameters. The results outlined show the change of flow rate with applied voltage in cone-jet mode electrospray can be significant. This dependence will, under some conditions, have a considerable effect on the electrospray flow rate, and consequently current and droplet size. This has implications on electrospray applications ...