Patent ID: 7750777

Claim:
A system for affecting field emission properties, comprising: a first magnetic field emission structure, said first magnetic field emission structure having a spatial force function based on its relative alignment with a second magnetic field emission structure; and at least one intermediate element associated with said first magnetic field structure, said at least one intermediate element affecting field emission properties of said first magnetic field emission structure, said spatial force function being in accordance with a code, said code corresponding to a code modulo of said first magnetic field emission structure and a complementary code modulo of said second magnetic field emission structure, said code defining a peak spatial force corresponding to substantial alignment of said code modulo of said first magnetic field emission structure with said complementary code modulo of said second magnetic field emission structure, said code also defining a plurality of off peak spatial forces corresponding to a plurality of different misalignments of said code modulo of said first magnetic field emission structure and said complementary code modulo of said magnetic field emission structure, said plurality of off peak spatial forces having a largest off peak spatial force, said largest off peak spatial force being less than half of said peak spatial force.