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KR: Fachverband Kristallographie
KR 3: Poster: Crystallography in Nanoscience
KR 3.1: Poster
Mittwoch, 24. März 2010, 15:00–17:30, Poster A
Physical aspects of the growth dynamics of plasmonic structures — •Merle Becker1, Bernhard Grotz1, Jens Pflaum2, Fedor Jelezko1, and Jörg Wrachtrup1 — 13. Physikalisches Institut, Universität Stuttgart, 70550 Stuttgart, Germany — 2Inst. Exp. Phys. VI, Julius-Maximilians Univ. and ZAE Bayern, 97074 Wuerzburg, Germany
In recent years, the importance of nanostructured materials for applications in e.g. nano-optics, plasmonics and as components of sensing devices strongly increased. Production by lithographic methods like optical, e-beam or ion-beam lithography [1] results in controllable and reproducible structures, however with the drawback of being highly intricate and expensive. In this contribution we demonstrate an alternative approach to compass these problems which is the use of chemical syntheses in combination with self-aggregation [2]. Silver nanowires grown in solution are investigated to optimize their performance as plasmon waveguides and antennae. Distributions of length and diameter in dependence on time and consequential development of aspect ratios of nanowires reveal influences of PVP on surface energies of participating faces. Broadenings of the distributions of length and diameter during growth are investigated and can be related to surface roughening of the (111) and (100) faces during growth process.
[1] Pelton, M. Laser&Photon. Rev. 2, 136-159 (2008) [2] Xia, Y. et al. Adv. Mater. 15, 353-389 (2003)