title: High precision attachment of silver nanoparticles on AFM tips by dielectrophoresis.
abstract: AFM tips are modified with silver nanoparticles using an AC electrical field. The used technique works with sub-micron precision and also does not require chemical modification of the tip. Based on the electrical parameters applied in the process, particle density and particle position on the apex of the tip can be adjusted. The feasibility of the method is proven by subsequent tip-enhanced Raman spectroscopy (TERS) measurements using the fabricated tips as a measurement probe. Since this modification process itself does not require any lithographic processing, the technique can be easily adapted to modify AFM tips with a variety of nanostructures with pre-defined properties, while being parallelizable for a potential commercial application.
authors.affiliation: Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany. christian.leiterer@gmail.com.
authors.forename: Christian
authors.initials: C
authors.lastname: Leiterer
authors.affiliation: Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany.
authors.forename: Erik
authors.initials: E
authors.lastname: Wünsche
authors.affiliation: Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany.|Institute of Physical Chemistry, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.
authors.forename: Prabha
authors.initials: P
authors.lastname: Singh
authors.affiliation: Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Albert
authors.affiliation: Institute of Micro- and Nanotechnologies, Ilmenau University of Technology, 98684, Ilmenau, Germany.
authors.forename: Johann M
authors.initials: JM
authors.lastname: Köhler
authors.affiliation: Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany.|Institute of Physical Chemistry, Friedrich-Schiller-University Jena, Helmholtzweg 4, 07743, Jena, Germany.
authors.forename: Volker
authors.initials: V
authors.lastname: Deckert
authors.affiliation: Leibniz Institute of Photonic Technology Jena (IPHT), Albert-Einstein-Straße 9, 07745, Jena, Germany.
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Fritzsche
keywords: AFM tips; Dielectrophoresis; Nanoparticle; TERS