title: Direct-Write 3D Nanoprinting of Plasmonic Structures.
abstract: During the past decade, significant progress has been made in the field of resonant optics ranging from fundamental aspects to concrete applications. While several techniques have been introduced for the fabrication of highly defined metallic nanostructures, the synthesis of complex, free-standing three-dimensional (3D) structures is still an intriguing, but so far intractable, challenge. In this study, we demonstrate a 3D direct-write synthesis approach that addresses this challenge. Specifically, we succeeded in the direct-write fabrication of 3D nanoarchitectures via electron-stimulated reactions, which are applicable on virtually any material and surface morphology. By that, complex 3D nanostructures composed of highly compact, pure gold can be fabricated, which reveal strong plasmonic activity and pave the way for a new generation of 3D nanoplasmonic architectures that can be printed on-demand.
authors.affiliation: Graz Centre for Electron Microscopy, Steyrergasse 17, 8010 Graz, Austria.
authors.forename: Robert
authors.initials: R
authors.lastname: Winkler
authors.affiliation: Graz Centre for Electron Microscopy, Steyrergasse 17, 8010 Graz, Austria.|Institute of Physics, Karl-Franzens-University , Universitätsplatz 5, 8010 Graz, Austria.
authors.forename: Franz-Philipp
authors.initials: FP
authors.lastname: Schmidt
authors.affiliation: Graz Centre for Electron Microscopy, Steyrergasse 17, 8010 Graz, Austria.
authors.forename: Ulrich
authors.initials: U
authors.lastname: Haselmann
authors.affiliation: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.|Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: Jason D
authors.initials: JD
authors.lastname: Fowlkes
authors.affiliation: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.|Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: Brett B
authors.initials: BB
authors.lastname: Lewis
authors.affiliation: Graz Centre for Electron Microscopy, Steyrergasse 17, 8010 Graz, Austria.|Institute of Electron Microscopy and Nanoanalysis, Graz University of Technology , 8010 Graz, Austria.
authors.forename: Gerald
authors.initials: G
authors.lastname: Kothleitner
authors.affiliation: Center for Nanophase Materials Sciences, Oak Ridge National Laboratory , Oak Ridge, Tennessee 37831, United States.|Department of Materials Science and Engineering, University of Tennessee , Knoxville, Tennessee 37996, United States.
authors.forename: Philip D
authors.initials: PD
authors.lastname: Rack
authors.affiliation: Graz Centre for Electron Microscopy, Steyrergasse 17, 8010 Graz, Austria.|Institute of Electron Microscopy and Nanoanalysis, Graz University of Technology , 8010 Graz, Austria.
authors.forename: Harald
authors.identifier: http://orcid.org/0000-0003-1112-0908
authors.initials: H
authors.lastname: Plank
keywords: 3D nanoprinting; focused electron beam induced deposition; gold; nanofabrication; nanostructures; plasmonics; purification; surface plasmon resonance