Patterning of Nanoparticle-Based Aerogels and Xerogels by Inkjet Printing

Lübkemann, Franziska and Miethe, Jan Frederick and Steinbach, Frank and Rusch, Pascal and Schlosser, Anja and Zámbó, Dániel (2019) Patterning of Nanoparticle-Based Aerogels and Xerogels by Inkjet Printing. SMALL, 15 (39). pp. 1-8. ISSN 1613-6810 (print); 1613-6829 (online)

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Abstract

Nanoparticle-based voluminous 3D networks with low densities are a unique class of materials and are commonly known as aerogels. Due to the high surface-to-volume ratio, aerogels and xerogels might be suitable materials for applications in different fields, e.g. photocatalysis, catalysis, or sensing. One major difficulty in the handling of nanoparticle-based aerogels and xerogels is the defined patterning of these structures on different substrates and surfaces. The automated manufacturing of nanoparticle-based aerogel- or xerogel-coated electrodes can easily be realized via inkjet printing. The main focus of this work is the implementation of the standard nanoparticle-based gelation process in a commercial inkjet printing system. By simultaneously printing semiconductor nanoparticles and a destabilization agent, a 3D network on a conducting and transparent surface is obtained. First spectro-electrochemical measurements are recorded to investigate the charge-carrier mobility within these 3D semiconductor-based xerogel networks.

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