Modelling and fabrication of optimum structure of novel interdigital sensors for food inspection

Abstract

SUMMARYModelling of an interdigital sensor-based sensing system for the detection of dangerous contaminated marine biotoxin in seafood has been carried out. Three interdigital sensors having new electrode configurations have been analysed using COMSOL Multiphysics. All sensors were designed to have an equal number of electrodes with the same sensing area. Based on the maximum sensitivity, the best electrode configuration has been chosen. Experiments on raw seafood contaminated with domoic acid have been conducted using the new fabricated sensor and very good results were obtained.

Novel Sensing Approach for LPG Leakage Detection—Part II: Effects of Particle Size, Composition, and Coating Layer Thickness

“…The spin coating of the suspension layer on the interdigital sensor was performed with three different durations, 15,20 and 25 seconds. Table 1 shows the average thickness of the three readings at different spin coating duration, each of which is an average of five readings taken vertically through an electron beam from different locations of the coated sensor.…”

“…Here, optimization of the response time is done by working on the characteristics of the thin film coated on the sensing surface. Electrochemical impedance spectroscopy [15][16][17][18] has been used to study the signal properties of the interdigital sensor [19][20][21][22][23].…”

Novel Planar Interdigital Sensors

“…The sensors were modelled using the actual size of the fabricated sensors. COMSOL Multiphysics has been used to characterize the planar meander sensor and interdigital sensor as discussed in [9] and [10]. This following section will discuss in detail the capability of the COMSOL Multiphysics to simulate and analyse the novel planar interdigital sensors.…”

Capacitive humidity and dew-point sensing: Influence of wetting of surface-attached polymer monolayers on the sensor response

“…Knowledge of the environmental humidity is important for various industrial or agricultural applications, for example, for air conditioning of cars or houses, supervision of food quality and storage [2] or in the field of meteorology [3,4]. For many practical applications the dew point, at which condensation and the formation of a liquid water phase occurs is an important parameter [5].…”