A microfluidic AFM cantilever based dispensing and aspiration platform Ralph van Oorschot, Hector Hugo Perez Garza, Roy J S Derks, Urs Staufer and Murali Krishna Ghatkesar EPJ Techn Instrum, 2 1 (2015) 4 Published online: 12 March 2015 DOI: 10.1140/epjti/s40485-014-0012-4