Particle Assembly and Processing

Main content

In addition to the wet-chemical synthesis of functional materials, typically resulting in powdery products, we work on the development of concepts to process, assemble and pattern the powder particles by a modular and sequential approach. Starting from preformed particles as building blocks with exactly defined composition, size, shape and surface chemistry, we fabricate new materials with 1-, 2- and 3-dimensional geometries including fibers, films, foams, sponges or aerogels. Such an assembly process typically covers several orders of length scales from a few nanometers to several centimeters. The large number of building blocks in combination with the nearly indefinite possibilities to combine and arrange them makes it possible to develop multifunctional materials with unprecedented complexity and with properties optimized for specific applications.

mw_assembly_overview  
Selection of macroscopically shaped 1-, 2- and 3-D materials such as luminescent fibers, films, aerogels and sponges assembled and processed from preformed inorganic building blocks.

Our assembly and processing expertise can be summarized as follows:

  • Surface functionalization of particles
  • Formulation of dispersions
  • Film deposition by doctor blading, dip- and spin-coating
  • Assembly of nanoparticles
  • Oriented attachment of nanoparticles
  • Gelation of nanoparticles
  • Nanocomposite preparation

 

Selected references:

  • W. Cheng, Y. Ju, P. Payamyar, D. Primc, J. Rao, C. Willa, D. Koziej, M. Niederberger, Large-Area Alignment of Tungsten Oxide Nanowires over Flat and Patterned Substrates for Room Temperature Gas Sensing, Angew. Chem. Int. Ed. 2015, 54, 340
  • F. Rechberger, G. Ilari, M. Niederberger, Assembly of Antimony-Doped Tin Oxide Nanocrystals into Conducting Aerogel Monoliths, Chem. Commun. 2014, 50, 13138
  • F. J. Heiligtag, W. Cheng, V. R. de Mendonça, M. J. Süess, K. Hametner, D. Günther, C. Ribeiro, M. Niederberger, Self-Assembly of Metal and Metal Oxide Nanoparticles and Nanowires into a Macroscopic Ternary Aerogel Monolith with Tailored Photocatalytic Properties, Chem. Mater. 2014, 26, 5576
  • F. J. Heiligtag, M.  J. I. Airaghi Leccardi, D. Erdem, M. J. Süess, M. Niederberger, Anisotropically Structured Magnetic Aerogel Monoliths, Nanoscale 2014, 6, 13213
  • F. Rechberger, F. J. Heiligtag, M. J. Süess, M. Niederberger, Assembly of BaTiO3 Nanocrystals into Macroscopic Aerogel Monoliths with High Surface Area, Angew. Chem. Int. Ed., 2014, 53, 6823
  • D. Koziej, A. Lauria, M. Niederberger, Metal Oxide Particles in Materials Science: Addressing All Lengths Scales, Adv. Mater. 2014, 26, 235
  • N. Kränzlin, M. Niederberger, Wet-Chemical Preparation of Copper Foam Monoliths with Tunable Densities and Complex Macroscopic Shapes, Adv. Mater. 2013, 25, 5599

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Wed Jul 26 06:34:34 CEST 2017
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