The research developed a new mechanism for particle agglomeration growth and fracture in the flow-electric coupling field. Microscopic visualization experiments reveal an optimum voltage range for controlling agglomerate growth dynamics. Additionally, we observed, for the first time, twisting behaviors of particle agglomerates during the growth and fracture process under the influence of the flow-electric field. A correlation between twist and fracture, varying with the increase in applied voltage, was identified. Moreover, we identified two distinct agglomeration modes: dendritic and chain agglomerates, each exhibiting unique growth characteristics. We discovered that the growth, twisting, and fracture of inclined dendritic agglomerates are influenced by two components of the electric dipole moment: the axial () and radial () components, with the aid of numerical simulation. Chain-like agglomerates exhibit growth followed by fracture. Our findings offer insights into the controlled growth of submicron particle agglomerates in gas phases using electric fields.

中文翻译：

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流电耦合场中亚微米颗粒枝晶团聚生长与断裂机理

该研究开发了流电耦合领域颗粒团聚生长和破裂的新机制。显微可视化实验揭示了控制附聚物生长动态的最佳电压范围。此外，我们首次观察到在流电场的影响下颗粒团聚体在生长和断裂过程中的扭曲行为。扭曲和断裂之间的相关性随着施加电压的增加而变化，已被确定。此外，我们还发现了两种不同的团聚模式：树枝状和链状团聚体，每种都表现出独特的生长特征。借助数值模拟，我们发现倾斜树枝状团聚体的生长、扭曲和断裂受到电偶极矩的两个分量的影响：轴向（）和径向（）分量。链状团聚体先生长后断裂。我们的研究结果为利用电场控制气相中亚微米颗粒团聚体的生长提供了见解。