Effects of the resultant force due to two-phase density difference on droplet formation in a step-emulsification microfluidic device
Effects of the resultant force due to two-phase density difference on droplet formation in a step-emulsification microfluidic device
复制标题
阶梯乳化微流控装置中两相密度差合力对液滴形成的影响
DOI：
10.1016/j.jiec.2022.03.029
复制
发表时间：
2022-03
影响因子：
6.1
通讯作者：
Taotao Fu
中科院分区：
文献类型：
--
作者：
Zhiwei Zhang;Mengyu Fan;Qianqiao Wang;Huaiyu Li;Chunying Zhu;Youguang Ma;Taotao Fu
本研究重点研究了阶梯乳化微流控装置中两相密度差引起的合力对液滴生成过程的影响。三维可视化用于观察液滴生成的特征。根据液滴生成形式的不同，可分为滴滴生成模式和悬浮生成模式。在悬浮生成模式下，液滴更倾向于椭圆体膨胀的形成过程，其水平方向尺寸大于垂直方向；而在滴水生成模式下，水滴的形状是相反的。确定了各种操作条件下液滴生成的控制阶段。随着分散相粘度的增大，悬浮生成方式的控制阶段为颈缩阶段，滴落生成方式的控制阶段由三维膨胀第一阶段转变为颈缩阶段。结合力学分析和实验测试数据，提出了液滴生成模型，从而得到了液滴尺寸预测公式。
This study focuses on the influence of the resultant force caused by the density difference of the two phases on the droplet generation process in a step-emulsification microfluidic device. Three-dimensional visualization is used to observe the characteristics of droplet generation. According to the difference in droplet generation form, it can be divided into drip generation mode and suspended generation mode. In the suspended generation mode, the droplets are more inclined to the formation process of the expansion of the ellipsoid, whose size in the horizontal direction is larger than the vertical direction; while in the drip generation mode, the shape of the droplet is opposite. The control stage of the droplet generation under various operating conditions is determined. As the viscosity of the dispersed phase increases, the control stage of the suspended generation mode is the necking stage, and the control stage of the drip generation mode changes from the first stage of three-dimensional expansion to the necking stage. The model of the droplet generation is proposed by combining mechanical analysis and experimental testing data, and the droplet size prediction formula is thereby obtained.
登录
查看更多内容
影响因子：
2.5
作者：
Ran Li;I. Kobayashi;Yanru Zhang;M. Neves;K. Uemura;M. Nakajima
通讯作者：
Ran Li;I. Kobayashi;Yanru Zhang;M. Neves;K. Uemura;M. Nakajima
DOI：
10.1209/epl/i1999-00371-6
发表时间：
1999-07-01
期刊：
EUROPHYSICS LETTERS
影响因子：
--
作者：
Perez, M;Brechet, Y;Suery, M
通讯作者：
Suery, M
影响因子：
4.7
作者：
Gharedaghi, Hamed;Dousti, Ahmad;Ashjaee, Mehdi
通讯作者：
Ashjaee, Mehdi
影响因子：
6.1
作者：
Zhiwei Zhang;Zhong-Zheng Wang;F. Bao;Mengyu Fan;Shaokun Jiang;Chunying Zhu;Youguang Ma;Taotao Fu
通讯作者：
Zhiwei Zhang;Zhong-Zheng Wang;F. Bao;Mengyu Fan;Shaokun Jiang;Chunying Zhu;Youguang Ma;Taotao Fu
影响因子：
13.3
作者：
Hashimoto, Michinao;Garstecki, Piotr;Whitesides, George M.
通讯作者：
Whitesides, George M.