What is Electrical Impedance Spectroscopy (EIS)?
That is a very good question. Let’s start with what we mean by Impedance. Impedance, like resistance, is a way of measuring the ability of an electrical system to resist the electrical current running through it. However, where resistance is typically measured by the well-known Ohm’s Law and thus represents a rather theoretical concept, impedance can be considered the form resistance to electrical current takes in the real world, which is always just slightly more nuanced and complex than pure theory. So what then is Electrical Impedance Spectroscopy (EIS)? Electrical Impedance Spectroscopy (EIS) refers to a way of measuring the electrical impedance of an element in an electronic system by looking at the frequency of an applied electrical current.
Uses for Electrical Impedance Spectroscopy (EIS)
Electrical Impedance Spectroscopy (EIS) van be used in a variety of ways. Since it is a measurement tool, it provides a specific type of information that can be useful in a plethora of different situations, professional environments and for a range of professional applications, as well as in certain fields of research. For example, since electrical impedance of any material is strongly influenced by the composition of said material, Electrical Impedance Spectroscopy (EIS) can be used in medical practices to determine whether certain bodily tissues have in any way changed composition over time. If so, something might be not right.
EIS and cervical cancer detection
Electrical Impedance Spectroscopy (EIS) can be used, for example, to determine whether the tissue of the cervix is healthy, at risk or cancerous. Because of cytological changes, the electrical impedance of unhealthy cervical cells will be lower compared to that of normal or healthy cervical cells. This is just one example in many of the purposes of Electrical Impedance Spectroscopy (EIS).