Your browser has javascript turned off or blocked. This will lead to some parts of our website to not work properly or at all. Turn on javascript for best performance.

The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Knut Deppert

Knut Deppert

Professor

Knut Deppert

Towards Superlattices via Evaporative Self-Assembly of Aerosol Nanoparticles

Author

  • Namsoon Eom
  • Knut Deppert

Summary, in English

Nanoparticle superlattices consisting of densely packed particles with periodic arrangements can exhibit interesting collective properties different from those of individual nanoparticles and thus have attracted great interest in research due to their potential applications in optoelectronic, plasmonic, and magnetic devices[1, 2]. Evaporation-induced self-assembly on solid substrates which employs nanoparticles produced by wet chemistry is one of the most widely used methods in nanoparticle superlattice fabrication[3]. However, impurities are inherent in the popular wet chemistry-based method and are often a cause of lack of reproducibility. Here we present a simple but novel method to generate close-packed arrays of nanoparticles uniquely created by combining aerosol technology with evaporation-induced self-assembly. Gold aerosol nanoparticles are generated using a spark discharge generator and are subsequently deposited on liquid droplets. We demonstrate that this way of capturing aerosol nanoparticles in the gas-liquid interface of a droplet suppresses the ubiquitous ‘coffee-ring’ effect during evaporation leading to self-assemblies of nanoparticles. This simple, effective method provides a versatile strategy for fabricating various types of nanoparticle superlattices.

Department/s

  • Solid State Physics
  • NanoLund

Publishing year

2019-08-25

Language

English

Document type

Conference paper: abstract

Topic

  • Chemical Sciences

Conference name

European Aerosol Conference 2019

Conference date

2019-08-25 - 2019-08-30

Conference place

Gothenburg, Sweden

Status

Published