Nanocomposites and nanomaterials

New prospects in the printed electronics field: designing the size and the structure of clusters underdirected flow using "bottom-up" approach
Umerova S.O., Ragulya A.V.
Frantsevich Institute for Problems of Materials Science of NASU, 3, Krzhyzhanovsky St., Kyiv, 03142, Ukraine 
E-mail: Saidealexumerova@gmail.com

Printed electronics is an all-encompassing term for the printing method used to create electronic devices by printing on a variety of substrates. Printed electronics have become secure, flexible, and cost-effective, all of which make them appealing to a broad range of industries. Despite its status as a fast-growing field in technology, it is not without its challenges. Currently multifunctional materials research is based on designing of meta-nanostructures or laminated nanocomposites for a useful combination of properties and applications. Particularly, modern technologies of printed electronics for MLCC, SOFC, DSSC require developing of appropriate structures in form of thin layers with smooth interface between functional layers. This problem can be solved by development of new technologies and modernization of traditional methods or by the development of new raw materials for printing. As a traditional technology to be modernized, we chose screen-printing among many technologies. The screen-printing is more promising one due to low cost, rapidity and the possibility of obtaining smooth uniform layers with high density and different structures in one-step. For development of new raw materials for printing, we offer a complex approach: First was a traditional technological miniaturization “top – down” due to using of BaTiO3 nanopowder instead of micron-sized one. However, using of nanoparticles is accompanied with their agglomeration and very small size in comparison with polymer molecule. In addition, the interaction between bigger polymer molecule and smaller nanoparticle will promote complex non-typical structural effects. However, the agglomeration could be prevent through surface modification with some surface-active substance. Also, understanding of non-typical physical-chemical interaction of nanoparticles with long-chain polymer molecules will otherwise look at the rheology of such systems. Based on this, we used second approach “bottom – up”, designing the size and structure of the elements under directed flow for specific object and the formation processes.