Engineering crystalline Au nanoparticles of anisotropic shape in epitaxially grown high-index SrTiO3

Autor:	Hendrik Bernhardt, P. Sungur, C. Katzer, Wolfgang Fritzsche, Ingo Uschmann, Uwe Hübner, Frank Schmidl, G. Schmidl, R. Diener
Rok vydání:	2015
Předmět:	Materials science Condensed matter physics business.industry Scattering Mechanical Engineering Physics::Optics Nanoparticle Epitaxy Pulsed laser deposition Crystal Condensed Matter::Materials Science Optics Mechanics of Materials Particle General Materials Science Dewetting business Anisotropy
Zdroj:	Journal of Materials Science. 50:5562-5570
ISSN:	1573-4803 0022-2461
Popis:	We present a possible fabrication scheme of anisotropic nanoparticles grown in a crystal high-index material (SrTiO3). Different ellipsoidal Au nano-antennas were formed by changing the Au seed layer thickness and subsequent embedding in SrTiO3, prepared by pulsed laser deposition. Prior to the SrTiO3 deposition, a temperature-induced dewetting process of the thin Au films results in different particle sizes and size distributions, which are the basis for anisotropic particle formation after embedding in a crystalline SrTiO3 matrix. The dependence of the anisotropy on the Au seed layer thickness was investigated by X-ray diffraction (XRD) measurements. At this was noticed a stronger increase in size in c-axis direction than in a/b-axis direction for an increase of the Au seed layers. Additionally, the optical response of the particles was detected via the plasmon resonance shift in extinction and scattering spectra.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::5a75fe014be41d9c819a7948f9192be1 https://doi.org/10.1007/s10853-015-9103-0 Zobrazit plný text záznamu Plný text ve formátu PDF