System and method for minimizing disturbances by a field emission structure
An improved field emission system and method is provided that involves field emission structures having electric or magnetic field sources. The magnitudes, polarities, and positions of the magnetic or electric field sources are configured to have desirable correlation properties, which may be in accordance with a code. The correlation properties correspond to a desired spatial force function where spatial forces between field emission structures correspond to relative alignment, separation distance, and the spatial force function.
1. A field emission structure, comprising:
a first plurality of field emission sources oriented in a positive polarity direction; and
a second plurality of field emission sources oriented in a negative polarity direction, said first plurality of field emission sources and said second plurality of field emission sources having field emission strengths, polarities, and positions in accordance with a desired spatial force function, wherein a first combined field emission strength of said first plurality of field emission sources is substantially equal to a second combined field emission strength of said second plurality of field emission sources, wherein said first plurality of field emission sources and said second plurality of field emission sources include a biasing field emission source, wherein said field emission sources of said first plurality of field emission sources and said second plurality of field emission sources other than said biasing field emission source have polarities and positions in accordance with a code, wherein said code comprises at least one of a Barker code, a Gold code, a Kasami sequence, a hyperbolic congruential code, a quadratic congruential code, a linear congruential code, a pseudorandom code, or a chaotic code.
2. The field emission structure of claim 1 , wherein there is an equal number of said first plurality of field emission sources and said second plurality of field emission sources.
3. The field emission structure of claim 1 , wherein said field emission sources of said first plurality of field emission sources and said second plurality of field emission sources other than said biasing field emission source are arranged in a circular ring about said biasing field emission source.
4. The field emission structure of claim 1 , wherein at least one of said first plurality of field emission sources or said second plurality of field emission sources comprises a permanent magnet, an electromagnet, an electret, a magnetized ferromagnetic material, a portion of a magnetized ferromagnetic material, a soft magnetic material, or a superconductive magnetic material.
5. The field emission structure of claim 1 , wherein said spatial force function comprises a peak attractive force.
6. The field emission structure of claim 1 , wherein said spatial force function comprises a peak repellant force.
7. A field emission structure, comprising:
a first plurality of field emission sources having field strengths, positions, and a first polarity in accordance with a desired spatial force function; and
a second plurality of field emission sources having field strengths, positions, and a second polarity in accordance with said desired spatial force function, wherein a first combined field emission strength of said first plurality of field emission sources is substantially equal to a second combined field emission strength of said second plurality of field emission sources, wherein said first plurality of field emission sources and said second plurality of field emission sources include a biasing field emission source, wherein said field emission sources of said first plurality of field emission sources and said second plurality of field emission sources other than said biasing field emission source have polarities and positions in accordance with a code, wherein said code comprises at least one of a Barker code, a Gold code, a Kasami sequence, a hyperbolic congruential code, a quadratic congruential code, a linear congruential code, a pseudorandom code, or a chaotic code.
8. The field emission structure of claim 7 , wherein there is an equal number of said first plurality of field emission sources and said second plurality of field emission sources.
9. The field emission structure of claim 7 , wherein said field emission sources of said first plurality of field emission sources and said second plurality of field emission sources other than said biasing field emission source are arranged in a circular ring about said biasing field emission source.
10. The field emission structure of claim 7 , wherein at least one of said first plurality of field emission sources or said second plurality of field emission sources comprises a permanent magnet, an electromagnet, an electret, a magnetized ferromagnetic material, a portion of a magnetized ferromagnetic material, a soft magnetic material, or a superconductive magnetic material.
11. The field emission structure of claim 7 , wherein said spatial force function comprises a peak attractive force.
12. The field emission structure of claim 7 , wherein said spatial force function comprises a peak repellant force.
13. A field emission structure, comprising:
a first plurality of field emission sources having field strengths, positions, and a first polarity in accordance with a desired spatial force function; and
a second plurality of field emission sources having field strengths, positions, and a second polarity in accordance with said desired spatial force function, wherein a first combined field emission strength of said first plurality of field emission sources is substantially equal to a second combined field emission strength of said second plurality of field emission sources such that their far field strength is substantially zero, wherein said first plurality of field emission sources and said second plurality of field emission sources include a biasing field emission source, wherein said field emission sources of said first plurality of field emission sources and said second plurality of field emission sources other than said biasing field emission source have polarities and positions in accordance with a code, wherein said code comprises at least one of a Barker code, a Gold code, a Kasami sequence, a hyperbolic congruential code, a quadratic congruential code, a linear congruential code, a pseudorandom code, or a chaotic code.