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SHR Neuro Cancer Cardio Lipid Metab Microb

Barb, RA; Hrelescu, C; Dong, L; Heitz, J; Siegel, J; Slepicka, P; Vosmanska, V; Svorcik, V; Magnus, B; Marksteiner, R; Schernthaner, M; Groschner, K.
Laser-induced periodic surface structures on polymers for formation of gold nanowires and activation of human cells
APPL PHYS A-MATER. 2014; 117(1): 295-300. Doi: 10.1007/s00339-013-8219-9
Web of Science FullText FullText_MUG

Co-authors Med Uni Graz: Groschner Klaus; Schernthaner Michaela
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Abstract:: Frequently observed coherent structures in laser-surface processing are ripples, also denoted as laser-induced periodic surface structures (LIPSS). For polyethylene terephthalate (PET) and polystyrene (PS), LIPSS can be induced by irradiation with linearly polarized ns-pulsed UV laser light. Under an angle of incidence of theta, their lateral period is close to the laser wavelength lambda divided by (n (eff) - sin theta). Here, n (eff) is the effective refractive index which is 1.32 and 1.23 for PET and PS, respectively. We describe potential applications of LIPSS for alignment and activation of human cells cultivated on polymer substrates, as well as for formation of separated gold nanowires which show pronounced surface plasmon resonances, e.g., at 775 nm for PET.