A nanofountain probe with Sub-100 nm molecular writing resolution.

[*] K.-H. Kim, Dr. N. Moldovan, Prof. H. D. Espinosa Department of Mechanical Engineering Northwestern University 2145 Sheridan Rd., Evanston, IL 60208-3111 (USA) Fax: (+1)847-491-3915 E-mail: [email protected] [**] This work was supported primarily by the Nanoscale Science and Engineering Initiative of the National Science Foundation under NSF Award Number EEC-0118025. We thank Prof. Chad Mirkin and his research group for many insightful discussions. The authors acknowledge the Microfabrication Applications Laboratory (MAL) of the University of Illinois at Chicago, the Materials Processing and Crystal Growth Facility (MPCGF) of Northwestern University, Northwestern University Atomic and Nanoscale Characterization Experimental Center (NUANCE), and the Electron Microscopy Center at Argonne National Laboratory, which is supported by the DOE Office of Science under contract no. W-31-109Eng-38, for the fabrication and characterization facilities.