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Master Laboratory Applied Physics

Lab 4 - Atomic Force Microscopy (AFM) (due to corona presently not available)

The aim of this practical course experiment is to give the students an insight into the technique of scanning probe microscopy (SPM) with an atomic force microscope (AFM) taken as example. AFM is widely‐used to image surface structures (on a nm or even sub‐nm scale scale) and to measure surface forces. AFM is an up‐to‐date (sophisticated) method for studying various properties of surfaces. In this lab course, the focus is on measuring topography and viscoelastic contrast of surfaces of various materials.

The experiment is typically performed in teams of two students.

Contact:
Silvia Siegenführ silvia.siegenfuehr@physik.uni-freiburg.de
Dr. Thomas Pfohl thomas.pfohl@physik.uni-freiburg.de
Prof. Günter Reiter guenter.reiter@physik.uni-freiburg.de


Lab 3 - Light Scattering of Colloidal Crystals (presently not available)

In this experiment the structure of microscopic colloidal crystals made of polystyrene spheres in water will be studied. By measuring the angles at which laser light scattered from the crystals constructively interferes, the structure of the crystalline lattice can be determined. A similar procedure, using X-rays instead of visible light, is commonly used to determine the structure and composition of atomic or molecular crystals for chemical, biological or materials science.

The attendance of a laser safety instruction is mandatory for all participants of this experiment. If you have already attended a laser safety instruction during the last 12 months, it will be accepted.

The experiment is typically performed in teams of two students.

Contact:
Barbara Heck b.heck@physik.uni-freiburg.de
Dr. Thomas Pfohl thomas.pfohl@physik.uni-freiburg.de
Prof. Günter Reiter guenter.reiter@physik.uni-freiburg.de 


 

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