Fabrication and visualization of metal-ion patterns on glass by dip-pen nanolithography

article
Fluorescent self-assembled monolayers (SAMs) are used as dippen nanolithography (DPN) substrates for the fabrication of patterns of Ca2+ 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. © 2008 Wiley-VCH Verlag GmbH & Co. KGaA.
Chemicals/CAS: Ions; Metals
TNO Identifier
461687
ISSN
14394235
Source
ChemPhysChem, 9(12), pp. 1680-1687.
Pages
1680-1687
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