title: Nanomolding the Surface of Polymer Films.
abstract: Slight changes in the experimental procedures of the micro contact printing (ACP) technique are introduced here, which allow for using polymers soluble in distinct solvents to fabricate submicrometric 2D periodic structures. Highly reproducible secondary and tertiary poly(dimethylsiloxane) (PDMS) molds could be produced, as demonstrated in atomic force microscopy images and light diffraction experiments. The replication of tertiary molds with no residues of PDMS demonstrates the feasibility of large-scale production with distinct polymers. The plane wave propagation along the tertiary poly(3,4-ethylenedioxythiophene) with poly(hydrogen 4-styrene sulfonate) molds was simulated with a finite-difference time-domain algorithm. A strong wave propagation was observed in the region containing the structures acting as a wave guide, in agreement with the results from the experimental absorption measurements. Furthermore, we show that the optical properties of the molds and their roughness can be tuned by choosing the polymers (including biopolymers) for printing pillars and tracks, thus bringing new possibilities for nanomolding of polymer surfaces for photonics, organic electronics and bioelectronics.
authors.forename: Mauricio
authors.initials: M
authors.lastname: Foschini
authors.forename: Silésia Fátima Curcino
authors.initials: SF
authors.lastname: Da Silva
authors.forename: José Roberto
authors.initials: JR
authors.lastname: Tozoni
authors.forename: Raigna Augusta Da Silva
authors.initials: RA
authors.lastname: Zadra-Armond
authors.forename: Osvaldo N
authors.initials: ON
authors.lastname: Oliveira
authors.forename: Alexandre
authors.initials: A
authors.lastname: Marletta