TY  - JOUR
A1  - König, Tobias
A1  - Sekhar, Y. Nataraja
A1  - Santer, Svetlana
T1  - Surface plasmon nanolithography impact of dynamically varying near-field boundary conditions at the air-polymer interface
JF  - Journal of materials chemistry
N2  - 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.
Y1  - 2012
U6  - https://doi.org/10.1039/c2jm15864g
SN  - 0959-9428
VL  - 22
IS  - 13
SP  - 5945
EP  - 5950
PB  - Royal Society of Chemistry
CY  - Cambridge
ER  -