Figure 2From: Immobilization of different biomolecules by atomic force microscopyFluorescence micrograph. Spotted 9 × 9 array on a biotinylated glass surface. After spotting neutravidin, the array was incubated with the biotinylated dye DY-547 and finally washed with water. The distance between each spot centre is 9 μm. The systematic reduction of spot size is owed to depletion of the tip-loading.Back to article page