Biodot of Irvine, Calif., has received US Patent No. 7,736,591, "Method and apparatus for liquid dispensing." The patent describes a ceramic tip and a random-access print head for the transfer of microfluidic quantities of fluid. The print head can collect and deposit fluid samples from a source plate to a target, according to the patent. The print head can also be programmed to create a direct map of the fluid samples from the source plate on the target or to create any desired pattern or print on the target.