Direct Self-Sustained Fragmentation Cascade of Reactive Droplets

Chihiro Inoue, Yu Ichiro Izato, Atsumi Miyake, Emmanuel Villermaux

研究成果: Contribution to journalArticle査読

5 被引用数 (Scopus)

抄録

A traditional hand-held firework generates light streaks similar to branched pine needles, with ever smaller ramifications. These streaks are the trajectories of incandescent reactive liquid droplets bursting from a melted powder. We have uncovered the detailed sequence of events, which involve a chemical reaction with the oxygen of air, thermal decomposition of metastable compounds in the melt, gas bubble nucleation and bursting, liquid ligaments and droplets formation, all occurring in a sequential fashion. We have also evidenced a rare instance in nature of a spontaneous fragmentation process involving a direct cascade from big to smaller droplets. Here, the self-sustained direct cascade is shown to proceed over up to eight generations, with well-defined time and length scales, thus answering a century old question, and enriching, with a new example, the phenomenology of comminution.

本文言語英語
論文番号074502
ジャーナルPhysical review letters
118
7
DOI
出版ステータス出版済み - 2 14 2017
外部発表はい

All Science Journal Classification (ASJC) codes

  • 物理学および天文学(全般)

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