Scheme 3.

(A, B) Glycan-patterned slides by microcontact printing of BSA glycoconjugates onto NHS-activated glass substrates, followed by a blocking step. (C) Patterned capture slides were exposed to Pseudomonas at variable concentrations, then imaged under darkfield condtions. (D) Image processing by FFT analysis produced reciprocal lattice peaks at k=±1/a in spectral format; central peak (k=0) scales with spatially averaged intensity of original image; noise from nonspecific binding is dispersed throughout k-space.