The hydrated planar lipid bilayer is a basic building block of biologic cell membranes. Although the cell membrane is a highly heterogeneous structure, composed
of lipids, proteins, carbohydrates and other components, a large number
of physical properties of biological cell membrane which are important in physiological
processes can be studied also in pure planar lipid bilayer systems. Some
of these properties (lipid tail length and saturation) are dependent also on the
temperature, therefore temperature dependent properties can be studied. Due to
different phase transition of used lipid bilayers, the different electrical properties
of hydrated planar lipid bilayers can be expected. Besides experimental work,
the hydrated planar lipid bilayer was also studied theoretically as electric double
layer in contact with electrolyte. In experimental work the electrical capacitance as parameter of the hydrated planar lipid bilayer thickness and breakdown voltage as parameter of the sta
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