Ordered Structures in a Variable Length A.C. Trap

Abstract

A variable length linear trap operating between 20-1000 Hz under standard temperature and pressure conditions is reported. We simulated and observed various kinds of stable patterns: linear strings, planar z ig-zag and volume structures. The interparticle distances depend on the trapped particle number and trap length. Our setup allows trapped microparticle diagnosis by various methods.

The physics and applications of strongly coupled plasmas levitated in electrodynamic traps

“…The drops assemble into a Coulomb structure under SATP conditions. To confine charged particles of silicon carbide (SiC) and alumina (Al 2 O 3 ), classical quadrupole traps [175,176,177] and multi-electrode traps consisting of 8, 12 or 16 cylindrical brass electrodes (with 3 or 4 mm diameter) can be used [178,179]. Experiments confirm that a 12 electrode trap geometry yields to higher stability and smaller amplitude of oscillation of the levitated microparticles.…”

“…The electric charge of the dust particles can rise up to values that are several thousand times larger with respect to the electric charge of the electron, as it is determined by the electron temperature and the particle size [30,31]. The dimension of levitated dust particles generally lies in the 1 ÷ 50 µm range, but not necessarily [58,176,177,181,256]. The size range is determined by the electric charge of the particle and the electrical discharge fields that accomplish levitation.…”

Studies on the Interaction Between an Acoustic Wave and Levitated Microparticles

“…The charged microparticles are stored inside the trap for hours in a quasi interaction free environment. More details on the linear electrodynamic traps mechanical layout can be found in (Gheorghe et al, 1998;Stoican et al, 2001). The motion of a charged particle in a quadrupole electric field is very well known e.g.…”

Solitary wave pulse in structure of charged microparticles

“…Захват заряженных частиц в подобном типе ловушек в неподвижной газовой среде при нормальных условиях был изучен в [5,6]. Межчастичное расстояние в Кулоновских структурах в линейной ловушке Пауля было определено в [7,8].…”