Can perforated-sheet bubble devices be scaled down from 2 to 0.2 micron features

This paper assesses the scaling-down possibility, and determines feasible geometries for miniaturizing the perforated-sheet devices, which offer high speed and simple packaging, but must be improved in density and functional versatilities (replication, swapping, editing, etc.). The use of separate control conductors can provide design flexibility, and over-sized gates and permalloy keepers can relax scaling-down constraints (i.e. electromigration and on-chip power dissipation). Miniaturized devices are implemented with thin propagation sheets, and thick but over-sized control conductors plus keepers. Moreover, 0.2μ bubble devices with functional versatilities appear achievable if suitable bubble medium, lithography, and thin films could be provided.