A brush having a tubular housing and a comb rotationally mounted within a nozzle inlet of the housing, the comb having a plurality of channels there through with bristles secured to the comb between pairs of the channels, and a pivotal lever engaged with the comb for rotation between obverse and inverse positions. Said halogenation comprises a step which consists in halogenating an aromatic derivative of a medium or advantageously strong acid, the aromatic radical being a phenyl substituted in ortho and in para by functions attracting electrons by inductive effect. The lower layer of the bilayer structure is at the level of the wiring layer and the upper layer of the bilayer structure extends above the level of the wiring layer. Additionally, tieback andor overlap processing may be applied to adjust sensor model parameters in response to discrepancies between calculated and measured locations.