Electrical impedance spectroscopy (EIS) for biological analysis and food characterization: a review

Abstract

Abstract. Electrical impedance spectroscopy (EIS), in which a sinusoidal test voltage or current is applied to the sample under test to measure its impedance over a suitable frequency range, is a powerful technique to investigate the electrical properties of a large variety of materials. In practice, the measured impedance spectra, usually fitted with an equivalent electrical model, represent an electrical fingerprint of the sample providing an insight into its properties and behavior. EIS is used in a broad range of applications as a quick and easily automated technique to characterize solid, liquid, semiliquid, organic as well as inorganic materials. This paper presents an updated review of EIS main implementations and applications.

Structure-function and application of plant lectins in disease biology and immunity

“…EIS technique provides sensitive, specific, robust and portable biosensing system with combination of carbohydrate and can also be used as an effective tool to characterize and detect the surface modification and bio-recognition process (Grossi and Riccò, 2016). EIS has been employed as level-free biosensor to detect bacteria using plant lectin such as Con A.…”

Propriedades Elétricas Dos Filmes De Polissacarídeos

“…Suas aplicações abrangem diversas áreas, tais como: análises microbiológicas, controle da qualidade de revestimentos, caracterização de sólidos, dentre outras (Grossi;Riccò, 2017). Tomando um estímulo elétrico em determinado material (Equação 1): …”

Study of Electrochemical Impedance of a Continuous Glucose Monitoring Sensor and its Correlation With Sensor Performance

“…This has been experimentally proven for the amperometric gas sensors, where the double layer capacitance of the sensor is shown to be linearly proportional to the sensitivity of the sensor [8]. The impedance spectroscopy has been also used to determine the health of the Lithium-ion battery cells [9], electric double-layer ultracapacitors [10], fuel cell systems [11] and glucose sensors [12] among other applications [13]. Motivated by these promising results, in this work we make an attempt to find the correlation between the sensitivity of electrochemical biosensors with their impedance.…”