Dresden 2017 – wissenschaftliches Programm
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MM: Fachverband Metall- und Materialphysik
MM 22: Poster session I
MM 22.17: Poster
Montag, 20. März 2017, 19:00–20:00, P4
Crystallization of coated nanoparticles — •Christine Walter1, Christian Klein1, Indranath Chakraborty2, Wolfgang Parak2, and Cornelius Krellner1 — 1Physikalisches Institut, Goethe-University, D- 60438 Frankfurt am Main, Germany — 2Department of Physics, Philipps-University of Marburg, D-35037 Marburg, Germany
Nanoparticles and nanoparticle assemblies display a range of properties that can diverge from classical observed properties in the colloidal regime [1]. Gold Nanoparticles coated with ω-functionalized alkane thiols, also called nanoions, can be crystallized in a diamond-like lattice , if their functionalized layers carry opposite surface charges [2]. This novel type of metamaterial presents a well-ordered three-dimensional assembly of crystalline nanoparticles with lattice parameters of about 20 nm. However, so far no electrical or magnetic characterizations of these nanoparticle crystals have been performed.
In this contribution, we report on the technique of nanoparticle crystallization following the recipe given in [2] and we will discuss the influence of different parameters like temperature and solvent on the size of the nanoparticle crystals and discuss first magnetic measurements on these crystallized nanoparticles.
[1] B. A. Grzybowski, CrystEngComm 16, 9368 (2014). [2] A.M. Kalsin et al., Science 312, 420 (2006).