Abstract
We describe the concept of a dielectrophoretic nanoparticle injector and its use in a plasmonic/photonic-based nanoparticle manipulation system. Particle motion is achieved by generating an electrostatic, non-uniform field between two tilted plates and applying the corresponding dielectrophoretic force to net-neutral nanoparticles. We investigate the dependence the dielectrophoretic force has on the plate angle of the charged plates as well as their separation distance, dielectric filler material, and exit interface membrane. Our results indicate an increasing average and maximum dielectrophoretic force attainable in the axial direction with corresponding decreasing plate angle and gap distance. The model also predicts larger field variation and deviation from the average with smaller plate angle and gap distance. Lastly, we conclude that the nanoparticles must be suspended in a dielectric medium with permittivity greater than their own permittivity so that their net motion is outward through the exit interface membrane and into the manipulator system.
Highlights
The manipulation of micro/nanoparticles of solid or aqueous material by way of gradient electromagnetic fields is used extensively in the fields of photonics and microfluidics
Additional nanoparticle manipulation schemes make use of plasmon generated gradient force fields which have been studied for the acceleration of net-neutral nanoparticles via dielectrophoresis with applications in nanosatellite propulsion systems
Dielectrophoresis occurs when a net-neutral particle is placed in a non-uniform electric field
Summary
The manipulation of micro/nanoparticles of solid or aqueous material by way of gradient electromagnetic fields is used extensively in the fields of photonics and microfluidics. One such action mechanism is that of the dielectrophoretic force. Dielectrophoresis is well known and has been utilized in the manipulation of liquid microflows and pico/nanoliter droplets for siphoning, separation and mixing in chemical and biological experiments, and transport applications.. Additional nanoparticle manipulation schemes make use of plasmon generated gradient force fields which have been studied for the acceleration of net-neutral nanoparticles via dielectrophoresis with applications in nanosatellite propulsion systems.. Additional nanoparticle manipulation schemes make use of plasmon generated gradient force fields which have been studied for the acceleration of net-neutral nanoparticles via dielectrophoresis with applications in nanosatellite propulsion systems. We study a dielectrophoretic tilted plate geometry that enables variable injection of nanoparticles or microliter quantities of liquids into manipulation/acceleration schemes such as those mentioned above and can double as a mass storage reservoir when injection is inactive
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