Alexandr Vinogradov

Inkjet printing is a promising direction of materials application and structuring. The proposed method of creating a specular holograms on a variety of surface materials, based on creating three-dimensional surface microstructure by controllable ink deposition. The basis for the approach - precise control of the applied ink containing titania nanoparticles with a high refractive index. It allows one to achieve a dense packed concave structure through coffee-ring effect.

Herein we report a new, facile and inexpensive methodology for obtaining highly refractive polymers suitable for inkjet printing using hexacoordinated titanium complexes (THC) and UV-curable lacquer based on triethylene glycol dimethacrylate (TGD) that is a cheap and non-toxic monomer that can be rapidly polymerized under UV irradiation under ambient conditions.

In this paper we for the first time report a reversible sol–gel–sol approach to obtain optical enzymatic biosensors with improved enzyme stability and good sensitivity by using desktop inkjet printing. The developed technique is based on the bio-inorganic inks allowing for a sol–gel–sol transition of the inorganic matrix: from liquid ink to a solid alumina matrix with entrapped enzymes and a subsequent color response due to the enzymatic reaction upon the resuspension of the matrix.