ACTA

Gold Nanoparticles with Elongated Shapes: Synthesis and Optical Properties

M. Olejnik^a, A. Agarwal^b, W. Zaleszczyk^c, N.A. Kotov^b and S. Mackowski^a
^aInstitute of Physics, Nicolaus Copernicus University, Grudziądzka 5, 87-100 Toruń, Poland
^bDepartment of Chemical Engineering, University of Michigan, Ann Arbor, Michigan 48109, USA
^cInstitute of Physics, Polish Academy of Sciences, al. Lotników 32/46, 02-668 Warsaw, Poland

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We use a seed-mediated growth to fabricate gold nanorods in water solution. By changing the amount of silver salt we demonstrate the control of aspect ratio of the obtained rods. The microscopic and spectroscopic analyses provide ways to characterize the morphology and the optical properties of the gold nanorods. Nanorods synthesized using this approach feature length of the order of 50-60 nm, which translates into longitudinal plasmon resonances in the near infrared spectrum region.

DOI: 10.12693/APhysPolA.122.346
PACS numbers: 81.07.-b, 81.07.Pr, 87.64.kv, 87.64.K-