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Laboratory Equipment

Scanning Transmission Electron Microscope

The scanning electron microscope is used to characterize the structure of conductive and non-conductive material specimens, including chemical analysis using an energy dispersive spectrometer while applying the desired detection (secondary electrons, backscattered electrons or scanning transmission electron microscopy). By combining scanning transmission electron microscopy and atomic force microscopy using a unique imaging technique called "Correlative Probe and Electron Microscopy", the system facilitates simultaneous characterization of the surfaces of the samples under investigation to obtain information about their topography.

Nanospider

Nanospider is a cutting-edge technological device used to create high-quality nanofibrous material. Nanolayers and nanofibers are prepared by electrostatic wetting of the polymer solution or melt level. A rotating roller, partially immersed in the polymer solution, is utilised to form the fibres. The roller rotates on its axis while a thin layer of polymer solution is formed on its surface. At the top of the rotating cylinder, the point with the shortest distance from the collector, numerous Taylor cone foci are formed due to the maximum electric field strength, which then leads to a softening process at the top of the cylinder. The fibre network, upon impact with the collector or support film, solidifies after the solvents have evaporated to form solid structures.

Lithography and Thin Film Deposition

The optical lithograph facilitates direct writing of the designed structure with a resolution of up to 300 nm and a total size of the written motif of up to 10x10 cm. Then, the photoresist is developed and can be covered with a thin layer (in the order of units or tens of nanometers) in a thin film deposition reactor. This system allows thin metal and dielectric layers to be sputtered. For special applications and materials, thin metal layers can be prepared by thermal evaporation. The advantage is the possibility of depositing up to 4 different materials in one process, even using deposition in reactive atmospheres (oxygen, nitrogen). The deposition apparatus can be equipped with a spectroscopic ellipsometer to monitor and control the growth processes in real time.