Surface plasmon nanolithography impact of dynamically varying near-field boundary conditions at the air-polymer interface
- It is well-known that surface plasmon generated near fields of suitably irradiated metal nano-structures can induce a patterning in an azobenzene-modified photosensitive polymer film placed on top. The change in the topography usually follows closely and permanently the underlying near field intensity pattern. With this approach, one can achieve a multitude of morphologies by additionally changing light intensity, polarization and the kind of metal used for nano-structuring. In this paper, we demonstrate that below a critical value of the polymer film thickness, the receding polymer material induces a change in refractive index of the glass-metal-polymer system, modifying the near field intensity distribution and causing a back-reaction on the flow of polymer material. This has a profound influence on the smallest size of topographical features that can be imprinted into the polymer.
Author details: | Tobias König, Y. Nataraja Sekhar, Svetlana SanterORCiDGND |
---|---|
DOI: | https://doi.org/10.1039/c2jm15864g |
ISSN: | 0959-9428 |
Title of parent work (English): | Journal of materials chemistry |
Publisher: | Royal Society of Chemistry |
Place of publishing: | Cambridge |
Publication type: | Article |
Language: | English |
Year of first publication: | 2012 |
Publication year: | 2012 |
Release date: | 2017/03/26 |
Volume: | 22 |
Issue: | 13 |
Number of pages: | 6 |
First page: | 5945 |
Last Page: | 5950 |
Funding institution: | DFG [SA1657/4-1] |
Organizational units: | Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie |
Peer review: | Referiert |