US Patent 7569340 - Nanoarrays of single virus particles

http://www.freepatentsonline.com/7569340.html

This patent covers an application of NanoInk's Dip Pen Nanolithography® to form arrays of binding sites for a virus which may represent the most precise and reliable way to control the positioning of a virus for study. Claim 1 reads:

1. An array comprising:

a substrate surface comprising a pattern of binding sites for a virus, wherein each binding site is surrounded by a substrate surface which does not bind virus, wherein the shape and the size of the virus binding site provides that only one virus particle is disposed on each binding site, and one virus particle disposed on each of the binding sites.