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Materials Mates M520

FRA - Low noise multi-function frequency response analyser

The Impedance Spectroscopy technique greatly expands the application range of electrochemical measures and helps in defining the dynamic behaviour of reactions as well as identifying the relative contribution of two or more concurrent processes. So far, the premium to be paid to enter this arena was a significant amount of money and, sometimes, the need to change the whole measurement chain. The new 520 Frequency Response Analyser from Materials Mates Italia sets a new level of performance and flexibility at a price that makes its selection painless. Covering a wide frequency range (10 μHz - 2 MHz) with great accuracy (up to 0.1% amplitude, 0.05deg phase) the interfaces with any potentiostat with analog I/O connections. ZedScope, its dedicated software package, offers all the features needed for the most difficult tasks with an intuitive approach. Thanks to its architecture, the 520 will accept further software packages for pulsed techniques, soon available from Materials Mates Italia. Upgrade now your equipment to Impedance Analysis and take a deeper look at your valued samples. Contact us to find out more on the features, as well as on the ancillary equipment available.

Background

Dielectric spectroscopy (sometimes called impedance spectroscopy), and also known as electrochemical impedance spectroscopy, measures the dielectric properties of a medium as a function of frequency. It is based on the interaction of an external field with the electric dipole moment of the sample, often expressed by permittivity. It is also an experimental method of characterizing electrochemical systems. This technique measures the impedance of a system over a range of frequencies, and therefore the frequency response of the system, including the energy storage and dissipation properties, is revealed. Often, data obtained by EIS is expressed graphically in a Bode plot or a Nyquist plot. Impedance is the opposition to the flow of alternating current (AC) in a complex system. A passive complex electrical system comprises both energy dissipater (resistor) and energy storage (capacitor) elements. If the system is purely resistive, then the opposition to AC or direct current (DC) is simply resistance. Almost any physico-chemical system, such as electrochemical cells, mass-beam oscillators, and even biological tissue possesses energy storage and dissipation properties. EIS examines them.

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