Polynucleotide array fabrication

A method of fabricating an array of biopolymers on a substrate, comprising:

• (a) operating a deposition system to deposit fluid droplets on the substrate in accordance with a target pattern to produce an actual pattern of deposited fluid droplets on said substrate, which droplets contain the biopolymers or biopolymer precursors;
• (b) capturing an image of the actual pattern of the deposited droplets;
• and
• (c) saving the actual pattern in a memory.

A method of fabricating an array of biopolymers on a substrate, comprising:

• (a) operating a deposition system to deposit fluid droplets on the substrate in accordance with a target pattern to produce an actual pattern of deposited fluid droplets on said substrate, which droplets contain the biopolymers or biopolymer precursors;
• (b) capturing an image of the actual pattern;
• (c) comparing the actual pattern with the target pattern;
• (e) when the results of one or more comparisons for an array exceed a predetermined tolerance, generating an error indication associated with the array;
• and
• (f) writing the error indication or an identification of the error indication, on a medium;
• and
• (g) physically associating the medium with the array;
• wherein when an identification of the error indication is written on the medium, the method further comprising storing the identification in the memory in association with the error indication.