Defence of dissertation in the field of Engineering Physics, Vsevolod Iakovlev, M.Sc.

Title of the dissertation is "Advanced synthesis of single-walled carbon nanotube films by aerosol CVD method for electro-optical applications".

Improvement of catalyst injection method during the carbon nanotube floating catalyst synthesis, as well as the implementation of artificial neural networks opens new horizons in electro-optical device fabrication from carbon nanotube networks.

Single-walled carbon nanotubes (SWCNTs) are a unique family of materials emerging towards high performance applications in electronics and optoelectronics. However, despite significant progress over the last 25 years, the problem of SWCNT production with tailored characteristics, the absence of the growth models and post-synthesis methods to improve specific SWCNT properties are still the main barriers towards a wide range of applications. The methods of the SWCNT synthesis, data processing and SWCNT treatment developed are still not fully optimized.

In current work we introduced a reactor designed with the use of spark discharge generated metallic nanoparticles as a source of catalyst. Also, we performed a comparative study of older and modern reactor generations. In addition, application of artificial neural networks in the chemical synthesis process of SWCNTs for prediction of main material characteristics was demonstrated. Finally, laser post-treatment of films significantly improved optoelectrical properties of the material. All these factors combined allowed us to create a number of new devices with the state-of-the-art-performance.

Opponet: Professor Krisztian Kordas, University of Oulu, Finland

Custos: Professor Esko I. Kauppinen, Aalto University School of Science, Department of Applied Physics

Supervising professor: Professor Esko I. Kauppinen, Aalto University School of Science, Department of Applied Physics

Co-supervisor: Professor Albert Nasibulin, Skolkovo Institute of Science and Technology, Russia

Contact information: Vsevolod Iakovlev, +79852387206, [email protected]

The dissertation is publicly displayed 10 days before the defence at the noticeboard of the School of Science in Konemiehentie 2, Espoo.