2011/02/12 by R. Blümel, Blümel, R.
Biochemistry, Genetics and Molecular Biology · Engineering · Physics and Astronomy · #Characterization and Applications of Magnetic Nanoparticles #Magnetic and Electromagnetic Effects #Radioactive Decay and Measurement Techniques #physics.atom-ph
paper · pdf · doi:10.48550/arxiv.1102.2537
13 pages, 2 figures
arxiv created 2011/02/12 · arxiv updated 2011/02/15
It is shown that a superposition of static and rapidly oscillating electric \it monopole (source) fields is capable of trapping particles with a permanent electric dipole moment. Thus, the new trapping mechanism differs fundamentally from saddle-point traps that use static and oscillating higher-multipole fields. An analytical stability analysis together with detailed molecular dynamics trajectory calculations prove that the trap is stable. Thin rods of barium titanate (BaTiO3) provide an illustrative example for the working principle of the new trap. The effects of gravity are considered. The existence of a bifurcation regime is predicted. A particular strength of the new trap is that it also works for zero orbital angular momentum with respect to the field-generating electrodes.