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Home » Knowledge » Techniques » Broadband Dielectric Spectroscopy

Broadband Dielectric Spectroscopy

Dielectric spectroscopy can be used to measure minor changes in material properties as it is subjected to a periodic electrical field to characterise its molecular kinetics, so measures dielectric properties as a function of frequency. Dielectric properties refers to a materials ability to polarise under the applied electromagnetic field and so depends on the structure and molecular properties of the material.

This technique can be used to indentify transitions in polymeric materials, both alpha-processes at low frequency (glass transition temperature) and also beta-processes at high frequency, associated with localised reorientations of dipole vectors. It can also be used to examine bulk conduction in solids and liquids and can also give an indication of impurities and interstitial ion effects in solids.