Cooperative microexcitations in 2+1D chain-bundle dusty plasma liquids

Chong Wai Io, Chia Ling Chan, I. Lin

Research output: Contribution to journalArticlepeer-review

10 Scopus citations


Through direct visualization at the discrete level, the microexcitations in cold 2+1D dusty plasma liquids formed by negatively charged dusts suspended in low pressure gaseous discharges were experimentally investigated, in which the downward ion flow wake field induces strong vertical coupling and chain bundle structure. It is found that the horizontal structure and motion are similar to those of the two-dimensional liquid. Different types of basic cooperative chain excitations: straight vertical chains with small amplitude jittering, chain tilting-restraightening, bundle twisting-restraightening, and chain breaking-reconnection, are observed. The region with good (poor) horizontal structural order prefers the straight (tilted or broken) chains with little (large) titling and tilting rate.

Original languageEnglish
Article number053703
JournalPhysics of Plasmas
Issue number5
StatePublished - May 2010


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