The search result changed since you submitted your search request. Documents might be displayed in a different sort order.
  • search hit 3 of 3
Back to Result List

Nanoscale patterning, macroscopic reconstruction, and enhanced surface stress by organic adsorption on vicinal surfaces

Please always quote using this URN: urn:nbn:de:bvb:20-opus-171947
  • Self-organization is a promising method within the framework of bottom-up architectures to generate nanostructures in an efficient way. The present work demonstrates that self- organization on the length scale of a few to several tens of nanometers can be achieved by a proper combination of a large (organic) molecule and a vicinal metal surface if the local bonding of the molecule on steps is significantly stronger than that on low-index surfaces. In this case thermal annealing may lead to large mass transport of the subjacent substrate atomsSelf-organization is a promising method within the framework of bottom-up architectures to generate nanostructures in an efficient way. The present work demonstrates that self- organization on the length scale of a few to several tens of nanometers can be achieved by a proper combination of a large (organic) molecule and a vicinal metal surface if the local bonding of the molecule on steps is significantly stronger than that on low-index surfaces. In this case thermal annealing may lead to large mass transport of the subjacent substrate atoms such that nanometer-wide and micrometer-long molecular stripes or other patterns are being formed on high-index planes. The formation of these patterns can be controlled by the initial surface orientation and adsorbate coverage. The patterns arrange self-organized in regular arrays by repulsive mechanical interactions over long distances accompanied by a significant enhancement of surface stress. We demonstrate this effect using the planar organic molecule PTCDA as adsorbate and Ag(10 8 7) and Ag(775)surfaces as substrate. The patterns are directly observed by STM, the formation of vicinal surfaces is monitored by highresolution electron diffraction, the microscopic surface morphology changes are followed by spectromicroscopy, and the macroscopic changes of surface stress are measured by a cantilever bending method. The in situ combination of these complementary techniques provides compelling evidence for elastic interaction and a significant stress contribution to long-range order and nanopattern formation.show moreshow less

Download full text files

Export metadata

Additional Services

Share in Twitter Search Google Scholar Statistics
Metadaten
Author: Florian Pollinger, Stefan Schmitt, Dirk Sander, Zhen Tian, Jürgen Kirschner, Pavo Vrdoljak, Christoph Stadler, Florian Maier, Helder Marchetto, Thomas Schmidt, Achim Schöll, Eberhard Umbach
URN:urn:nbn:de:bvb:20-opus-171947
Document Type:Journal article
Faculties:Fakultät für Physik und Astronomie / Physikalisches Institut
Language:English
Parent Title (English):New Journal of Physics
Year of Completion:2017
Volume:19
Article Number:013019
Source:New Journal of Physics (2017) 19:013019; https://doi.org/10.1088/1367-2630/aa55b8
DOI:https://doi.org/10.1088/1367-2630/aa55b8
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Tag:SPA-LEED; STM; adsoption; patterning; physics; reconstruction; surface stress; vicinal surfaces
Release Date:2021/02/05
Licence (German):License LogoCC BY: Creative-Commons-Lizenz: Namensnennung