Text: Dr. Ulrich Beck, Photos: Sabine Radtke
Institute of Electronic Appliances and Circuits belogs to the Faculty for
Electrical Engineering and Computer Science of the University of Rostock.
The thin film and interface team of the Institute GS is working at the University Campus in Warnemünde, Richard-Wagner-Str. 31. Main topics of this research team (Doz. Dr. Beck) are physical and electrochemical analysis of interfaces from biomaterials and bio-systems, creation (e.g. with PVD or micro arc or etching methods) and characterisation of coatings on implants and corrosion analysis.
The Supra 25 FESEM (Zeiss, Oberkochen, Germany) is a low voltage microscope with
currently highest resolution (1nm) of SEM’s in M-V.
Main features of this device are:
Pictures produced with Supra 25 FESEM
|The liquid nitrogen free EDX system X-Flash with Quantax (Bruker AXS, Berlin, Germany) with Peltier-cooler (cooling time < 30s) is a very fast and low-maintenance system with high resolution (< 133eV).||
Pictures produced with EDX system X-Flash with Quantax
|From microscopic pictures (stereo pairs) we can produce by use of MeX-software (Alicona, Graz, Austria) 3D-shapes of surfaces, high resolution surface profiles and compute a lot of parameters for describing surface shapes.
Pictures produced by use of MeX-software
|Coatings, thin-films and multilayers can be produced by sputtering (LA320S, Ardenne, Dresden, Germany) or vapour dposition (B30, HV-Dresden, Germany) in clean room.|
|Thin layers of photo-resist for lithographic processes will be generated with spin-coater (Delta 10TT, Süss-MicroTec, Garching, Germany) also in clean room.|
|The versatile SEM S360 (Cambridge Instr./Leo, Cambridge, UK) with resolution of about 5nm is mainly used for student education and in combination with the Elphy-system (Raith, Dortmund, Germany) for electron beam lithography.||
|The electrochemical computers IM6e (Zahner, Kronach, Germany) and Autolab (Eco-Chemie, Utrecht, Netherland) are used for characterisation of the interfaces between metallic biomaterials and electrolytic solutions or biosystems by DC- (Potentiometry, chronoamperometry, votammetry et al.) and AC-methods (EIS, Mott-Schottky et al.).||
Pictures produced with electrochemical computers