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DS: Fachverband Dünne Schichten
DS 46: Thin Film Properties: Structure, Morphology and Composition IV
DS 46.6: Vortrag
Freitag, 20. März 2020, 12:30–12:45, CHE 89
Dewetting assisted MWCNT ring formation — •Surita Basu1, Prabir Patra2, and Jayati Sarkar1 — 1Department of Chemical Engineering, Indian Institute of Technology Delhi, India — 2Department of Biomedical Engineering, University of Bridgeport 126 Park Avenue, Bridgeport,CT 06604
The fabrication of finite arrangement with nanoscale materials is key to current technology and self-assembly and self-organization are considered efficient and cost-effective and so a preferred process for building ordered structure of nanoparticles. Carbon nanotubes are very interesting material for their properties and molecular structures. Carbon nanotubes can assemble in different morphologies depending on its physical synthesis method. The different morphologies of CNT are coiled CNTs, CNT junctions, and toroidal CNTs. Thin polymer film < 100 nm also undergoes self-organization resulting in the formation of arrays of droplets. These spontaneously formed ordered patterns or structures on the surface has a wide range of technological applications. The retraction of fluid from the surface that it was supposed to cover leads to the phenomenon of dewetting causing the arrangement of droplets which act as a template for the self-assembly of the carbon nanotubes. The self-organized patterns on the thin PS film along with Marangoni flow are the driving force behind the circular ring formation of the carbon nanotubes without any external physical method.