Berlin 2015 – scientific programme

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 3: Nanoparticles and Composite Materials I (joint session CPP, BP)

CPP 3.5: Talk

Monday, March 16, 2015, 10:30–10:45, C 243

In situ Study of Spray-deposited Gold Nanoparticles Assemblies on Polymer Substrates Using GISAXS — •Peng Zhang¹, Koyiloth v. Sarathlal¹, Santoro Gonzalo¹, Nipam Shah², Guangsu Huang³, and Stephan v. Roth¹ — ¹Deutsches Elektronen Synchrotron, Notkestr. 85,22607 Hamburg — ²Fachbereichs Maschinenbau und Wirtschaft, Fachhochschule Lübeck, 23562 Lübeck — ³College of Polymer Science and Engineering, State Key Laboratory of Polymer Materials Engineering, Sichuan University, Chengdu 610065, China

The assembly of the nanoparticles from the solution still remains challenging, namely inhomogeneous material dispersion for example, coffee-stain-like or clumps of particles is observed1. To get designed nanocomposite in thin films, controlling the solution evaporation and promoting the ordering of nanoparticles on the templated substrates is a smart and feasible choice. Spray deposition is one of the desirable techniques to manipulate solvent evaporation by atomizing the solution2,3. Here we present our recent in situ studies on the directed assembly of spray deposited gold nanoparticles on patterned substrates. By manipulating the assembly process, we find that the well-ordered gold nanoparticles show enhanced optical properties. These findings are attractive for the applications such as solar cells and antireflection coating. [1] Yunker et al. Nature 476, 308 (2011); [2] Al-Hussein et al. Langmuir 29, 2490 (2013); [3]Herzog et al. Langmuir 29, 11260 (2013).