Regensburg 2019 – wissenschaftliches Programm

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MM: Fachverband Metall- und Materialphysik

MM 20: Poster session II

MM 20.3: Poster

Dienstag, 2. April 2019, 18:30–20:00, Poster C

synthesis and optical characterization of plasmonic nanoparticles — •Ricardo Baez^1,2, Paulraj Manidurai², Shirly Espinoza³, and Charusheela Ramanan¹ — ¹Max Planck Institute for Polymer Research; Department -Molecular Electronics, Ultrafast Spectroscopy for Optoelectronics. Ackermannweg 10, 55128 Mainz, Germany. — ²Department of Physics, Faculty of Physical and Mathematical sciences, PO box-160-C, University of Concepcion, Concepcion, Chile. — ³ELI Beamlines, Institute of Physics, Czech Academy of Science, Na Slovance 2, 18221 Prague, Czechia.

Gold nanoparticles have promising potential for photonic applications due to high chemical stability and strong optical cross-sections [1,2]. These colloidal nanoparticles present a stable localized plasmon resonance (LPR), which leads to an enhancement of scattering processes of up to 1015 orders of magnitude [4]. In the present work we carried out a synthesis of gold nanoparticles (AuNPs) via a microwave-assisted technique using natural Vitamin C as the reducing agent [5]. Only water, Vitamin C and the gold salt precursor are necessary to generate the AuNPs under the influence of microwaves [6]. Previous results have shown the possibility of controlling the shape/size of colloids using variations in radiation time. TEM micrographs reveal stable triangular, spherical, and pentagonal morphologies, with varying distribution and size [7].The optical properties have been studied by using absorption and fluorescence spectroscopy [8,9]. Theoretical calculations have been by using boundary element method (BEM) [10].