title: Near-field electrospinning.
abstract: A near-field electrospinning (NFES) process has been developed to deposit solid nanofibers in a direct, continuous, and controllable manner. A tungsten electrode with tip diameter of 25 microm is used to construct nanofibers of 50-500 nm line width on silicon-based collectors while the liquid polymer solution is supplied in a manner analogous to that of a dip pen. The minimum applied bias voltage is 600 V, and minimum electrode-to-collector distance is 500 microm to achieve position controllable deposition. Charged nanofibers can be orderly collected, making NFES a potential tool in direct write nanofabrication for a variety of materials.
authors.affiliation: Department of Mechanical Engineering, Berkeley Sensor and Actuator Center, University of California, Berkeley, California 94720, USA.
authors.forename: Daoheng
authors.initials: D
authors.lastname: Sun
authors.forename: Chieh
authors.initials: C
authors.lastname: Chang
authors.forename: Sha
authors.initials: S
authors.lastname: Li
authors.forename: Liwei
authors.initials: L
authors.lastname: Lin
mesh_terms: D003460:Crystallization / Q000379:methods*; D004563:Electrochemistry / Q000379:methods*; D008422:Materials Testing; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011092:Polyethylene Glycols / Q000032:analysis / Q000737:chemistry*; D012399:Rotation
chemical_list: D011092:Polyethylene Glycols