ABSTRACT
Electron paramagnetic resonance (EPR) frequently has been used for the identification of paramagnetic species existing on surfaces and the examination of electronic structures. In general, to gain sufficient EPR signal, species adsorbed on the surfaces of fine particles are investigated. In addition, the technique provides only measurements of the average of effects from many different crystalline surfaces. Biological membranes form liquid crystalline states above a certain temperature which provides an incentive for studies of liquid crystals. Liquid crystals have industrial applications such as in displays. EPR imaging can offer the possibility of macroscopic measurement for surface diffusion. Spectral-spatial-spatial three-dimensional EPR imaging appears to be the most suitable technique to solve this problem. A typical amorphous EPR spectrum of Vanadylacetylacetonate was observed at -50°C when the normal direction of the flat surface was parallel to the static magnetic field.
