High aspect ratio constructive nanolithography with a photo-dimerizable molecule

A major challenge in constructive nanolithography is the preservation of the lateral resolution of a monolayer-thick template pattern while amplifying it to a structure with a thickness above 10 nm. So far, the most successful approach to achieve this is surface-initiated polymerization (SIP) from e...

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Détails bibliographiques
Publié dans:Langmuir : the ACS journal of surfaces and colloids. - 1985. - 26(2010), 5 vom: 02. März, Seite 3623-8
Auteur principal: Barczewski, Matthias (Auteur)
Autres auteurs: Walheim, Stefan, Heiler, Tobias, Blaszczyk, Alfred, Mayor, Marcel, Schimmel, Thomas
Format: Article en ligne
Langue:English
Publié: 2010
Accès à la collection:Langmuir : the ACS journal of surfaces and colloids
Sujets:Journal Article
Description
Résumé:A major challenge in constructive nanolithography is the preservation of the lateral resolution of a monolayer-thick template pattern while amplifying it to a structure with a thickness above 10 nm. So far, the most successful approach to achieve this is surface-initiated polymerization (SIP) from e-beam structured monolayer templates in a multistep process. However, spreading of the polymer on the substrate leads to a rapid line-widening. Therefore, structures with lateral resolutions well below 100 nm and thicknesses above 10 nm (aspect ratio: 0.1) were not reported yet. Our approach of photoinduced, constructive, reversible nanolithography, is based on nanografting within a coumarin-derivative thiol (CDT) solution using the tip of an atomic force microscope (AFM). By photodimerization and the formation of disulfide bonds, the CDT polymerizes in a single-step process. We demonstrate the highest lateral resolution in constructive nanolithography at thicknesses above 10 nm (40 nm lateral resolution at 12 nm thickness, aspect ratio: 0.3)
Description:Date Completed 28.05.2010
Date Revised 23.02.2010
published: Print
Citation Status PubMed-not-MEDLINE
ISSN:1520-5827
DOI:10.1021/la903028x