photosensitive NANO-inks for inkjet printing of functional metal oxides
Bachelor/master project: Vincenzo
Esposito (firstname.lastname@example.org). Co-supervisor: Massimo Rosa
Challenge: ink jet printing
consists in the precise deposition of very small droplets of liquid (in the
order of picoliters) to form a continuous pattern with high spatial resolution.
After its commercial use in graphics this method is
attracting huge attention from the scientific and industrial community due to
its versatility in the deposition of a wide range of materials. Using colloidal
suspension of nanoparticles as inks is now possible to deposit thin layers in
an easier, faster and cheaper way than ever before.
This technique opens the way for a cost-effective
production of multilayered materials and structures like photovoltaic cells and
solid oxide fuel cells. On the other hand, the preparation of dedicated inks is
necessary to achieve this result.
to allow the printing of multilayered materials the printed pattern needs to be
The idea behind this project is to prepare a
photosensitive ink in order to increase the resistance by UV-curing. For this
purposes we will investigate the possibility to add a photosensitive polymer to
the nanoparticle suspension. The goal of the thesis is to prepare and
characterize colloidal suspensions of metal oxides and photopolymers in order
to understand which formulation meets the printability requirements.
during your work you will prepare suspensions of nano-particles of Zirconium
oxide doped with Yttrium oxide (YSZ). You will test different types and
quantity of photopolymer, amount of photo-initiator and co-solvents. You will
then characterize their properties and perform tests to understand the
reactivity of the suspension toward UV-light and the time needed for the
removal of the solvent.
this project will allow you to:
Gain hands-on experience on the preparation and
characterization of nanoparticle colloids;
Familiarize with the physics and chemistry of
different photosensitive systems;
Understand the critical parameters of a
fast-growing technology like inkjet printing;
Basic knowledge of chemistry, physics or material science. Interest in materials chemistry for energy conversion devices.