An au301 Rainmaker is in use at the headquarters of the NIH's Microscale Life Sciences Center developing single cell sensors. The au801 targets the well using machine vision and dispenses a ring of polymer around the outside of the 150um diameter well. The polymer is functionalized to detect Oxygen, pH, etc.. The Microscale Life Sciences Center headquarters is at The Center for Ecogenomics, The Biodesign Institute, Arizona State University.