TY  - JOUR
A1  - König, Tobias
A1  - Santer, Svetlana
T1  - Visualization of surface plasmon interference by imprinting intensity patterns on a photosensitive polymer
T2  - Nanotechnology
N2  - We report on sub-wavelength structuring of photosensitive azo-containing polymer films induced by a surface plasmon interference intensity pattern. The two surface plasmon waves generated at neighboring nano-slits in the metal layer during irradiation interfere constructively, resulting in an intensity pattern with a periodicity three times smaller than the wavelength of the incoming light. The near field pattern interacts with the photosensitive polymer film placed above it, leading to a topography change which follows the intensity pattern exactly, resulting in the formation of surface relief gratings of a size below the diffraction limit. We analyze numerically and experimentally how the depth of the nano-slit alters the interference pattern of surface plasmons and find that the sub-wavelength patterning of the polymer surface could be optimized by modifying the geometry and the size of the nano-slit.
Y1  - 2012
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/35455
SN  - 0957-4484
VL  - 23
IS  - 48
PB  - IOP Publ. Ltd.
CY  - Bristol
ER  -