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Fabrication and Visualization of Metal‐Ion Patterns on Glass by Dip‐Pen Nanolithography
Author(s) -
BasabeDesmonts Lourdes,
Wu ChienChing,
van der Werf Kees O.,
Peter Maria,
Bennink Martin,
Otto Cees,
Velders Aldrik H.,
Reinhoudt David N.,
Subramaniam Vinod,
CregoCalama Mercedes
Publication year - 2008
Publication title -
chemphyschem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.016
H-Index - 140
eISSN - 1439-7641
pISSN - 1439-4235
DOI - 10.1002/cphc.200700853
Subject(s) - dip pen nanolithography , nanolithography , monolayer , fluorescence , fabrication , fluorescence microscope , nanotechnology , microscope , materials science , ion , chemistry , microscopy , analytical chemistry (journal) , optics , organic chemistry , medicine , alternative medicine , physics , pathology
Fluorescent self‐assembled monolayers (SAMs) are used as dip‐pen nanolithography (DPN) substrates for the fabrication of patterns of Ca 2+ and Cu 2+ ions. The driving force for the transfer of these ions from an atomic force microscopy (AFM) tip to the surface is their complexation to organic ligands on the monolayer. By means of fluorescent surfaces, the patterns can be visualized under a fluorescence microscope. We use a custom‐built atomic force fluorescence microscope (AFFM), a combination of atomic force and confocal fluorescence microscopes, to deposit the metal ions onto the sensing SAMs by DPN and to subsequently visualize modulations of fluorescence intensity in a sequential write–read mode.