Dresden 2011 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 44: Nanostructures at surfaces: Dots, particles, clusters, arrays III

O 44.6: Vortrag

Mittwoch, 16. März 2011, 12:30–12:45, WIL C107

Surface Patterning Technique using Polystyrene Sphere Templates for Fabricating Diverse Nanostructures and Broad Applications — •Feng Xu, Shikuan Yang, Fabian Grote, Huaping Zhao, and Yong Lei — Institute of Materials Physics and Center for Nanotechnology, University of Muenster

Surface nano-patterning is a necessary step in many real device applications ranging from electronics to optics, data storage, sensing and display areas. Various protocols are adopted to synthesize surface nano-patterns, such as electron beam lithography, optical lithography, focused ion beam etching and so on. Template-based methods can be utilized for parallel surface nano-patterning with advantages such as high through-put and low-cost of surface nanostructures. Among them, monolayer polystyrene (PS) sphere template is powerful in preparing various surface nano-patterns with different topologies and composed of different building blocks. In our group, through heating Au-coated PS sphere arrays in a very controllable way, nanodot arrays can be acquired. These fabricated surface nano-patterns show intriguing optical properties, which include multiple surface plasmon resonance (SPR) bands and strong infrared absorption. These unique optical properties are very important in biological related application areas. Moreover, the full structural controllability of the surface nano-patterns supplies a possible way to investigate the relation of the sensing and surface-enhanced Raman scattering (SERS) performances to the structural parameters. This is important in the exploration of the fabrication of SERS and SPR-based sensing substrates with ultra-high sensitivities.