Title :
Liquid and crystalline structures in dusty plasmas: dust liquid crystal
Author :
Khrapak, Alexey G. ; Molotkov, Vladimir I. ; Nefedov, Anatoly P. ; Torchinsky, Vladimir M. ; Yoshino, Katsumi
Author_Institution :
Inst. of High Temp., Acad. of Sci., Moscow, Russia
Abstract :
Results of the experimental investigation of dusty plasma structures being formed in striations of a positive column of the dc low-pressure glow discharge in the wide range sizes of dust grains from 5·10-12 g to 10-7 g are presented. Depending upon a relation between forces acting on dust particles (gravity, electrical, ion drag) different type of dusty plasma formations were observed: plasma crystals, structures with a short-distance order and with a convective movement of dust grains. The molecular dynamics simulation performed showed a good agreement with the experimental data. For the first time there has been realized levitation of large cylindrical particles (with a length of 300 μm) which formed a structure similar to liquid crystals
Keywords :
dust; dusty plasmas; glow discharges; molecular dynamics method; plasma simulation; convective movement; crystalline structures; dc low-pressure glow discharge; dust grains; dust liquid crystal; dusty plasma; dusty plasma structures; dusty plasmas; electrical forces; gravity; ion drag; large cylindrical particles; liquid structures; molecular dynamics simulation; plasma crystals; positive column; short-distance order; striations; Crystallization; Drag; Dusty plasma; Glow discharges; Gravity; Liquid crystals; Plasma density; Plasma simulation; Plasma temperature; Power engineering and energy;
Conference_Titel :
Dielectric Liquids, 1999. (ICDL '99) Proceedings of the 1999 IEEE 13th International Conference on
Conference_Location :
Nara
Print_ISBN :
0-7803-4759-5
DOI :
10.1109/ICDL.1999.799021
