@inproceedings {pub5650,
	title = {Enhancement of interfacial instabilities by solid particles during fast stretching of a liquid suspension bridge},
	author = {Philipp Brockmann AND Hatim Ennayar AND Max Lannert AND Xulan Dong AND Yuhao Cao AND Sebastian Brulin AND Ilia Roisman AND Jeanette Hussong},
	year = {2024},
	month = {June},
	abstract = {In this experimental study, the rapid stretching dynamics and interfacial instabilities of a suspension liquid bridge are studied using a highspeed video system. The bridge is formed between two parallel plates with an initial gap width ranging from 30 to 60 {\textmu}m. One of the plates is fixed while the second plate moves with a constant acceleration whose magnitude reaches 180 m/s2. The particle size in the suspensions is varied from 6 to 40 {\textmu}m. Fast stretching of a viscous liquid bridge may lead to the emergence of the interfacial instability of the bridge meniscus, resulting in the formation of fingers. In this study, it is demonstrated that the the presence of particles amplifies the number of fingers during the initial stretching phase. Furthermore, particles contribute to the emergence of additional secondary fingers in the later stages of the stretching process, strongly increasing the overall finger number. These findings highlight a fascinating phenomenon: the presence of particles triggers the formation of secondary liquid bridges around the primary one. We establish a correlation between the number of bridges and both the particle volume fraction and size. Remarkably, intermediate particle sizes (15 {\textmu}m) lead to the highest number of secondary bridges, while the smallest particles (6 {\textmu}m) generate only a few. Furthermore, this study reveals that particles can organize into periodic agglomerations or structures when the liquid is compressed during the experiment preparation. The presence of these structures results in the even distribution of secondary bridges and predefines the spatial locations of the fingers.},
	publisher = {The Institute for Liquid Atomization and Spray Systems},
	booktitle = {16th International Conference on Liquid Atomization and Spray Systems 2024}
}