A low cost novel sensing system for detection of dangerous marine biotoxins in seafood

Syaifudin, A. R. Mohd; Jayasundera, Krishanthi Padmarani; Mukhopadhyay, Subhas Chandra

doi:10.1016/j.snb.2008.12.053

Cited by 64 publications

(15 citation statements)

References 32 publications

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“…The new structure was designed to have more negative electrodes in between positive electrodes. The optimum numbers of negative electrodes is an important factor to design a better performance of interdigital sensors as reported by the author in [2,3]. More negative electrodes will result of more uniform electric filed generated within the sensors geometry.…”

Section: Analytical Model and Analysismentioning

confidence: 96%

Novel Planar Interdigital Sensors

Rahman

Mukhopadhyay

2014

Novel Sensors for Food Inspection: Modelling, Fabrication and Experimentation

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In this chapter, the sensor designed, modeling, simulation analysis and fabrication process will be discussed. New type of planar interdigital having unique configuration with different number of electrodes configuration will be introduced. The readers will get a good idea about design and modeling stages required to make a novel sensors. The different fabrication process involves different substrates and fabrication method will be highlighted. The main purpose of this chapter is to provide some fundamentals in the development of planar interdigital sensors. Operating PrincipleThe operating principle of planar interdigital sensor basically follows the rule of two parallel plate capacitors, where electrodes open up to provide a one sided access to the material under test (MUT) [1]. The electric field lines of parallel plate capacitor and an interdigital sensor are shown in Fig. 2.1. The electric field lines generated by the sensor penetrate into the MUT and will change the impedance of the sensor. The sensor behaves as a capacitor in which the capacitive reactance becomes a function of system properties. Therefore by measuring the capacitive reactance of the sensor the system properties can be evaluated.Since the electrodes of an interdigital sensor are coplanar, therefore the measured capacitance will give a high signal-to-noise ratio. In order to get a strong signal, the electrode pattern of the interdigital sensor can be repeated many times. The term ''interdigital'' refer to a digit-like or finger-like periodic pattern of parallel in-plane electrodes, used to build up the capacitance associated with the electric fields that penetrate into a material sample [1]. The conventional interdigital sensor is shown in Fig. 2.2. AC voltage source will be applied as an excitation voltage between the positive terminal and the negative terminal. An electric field is formed from positive terminal to negative terminal. Mamishev, M. S. Abdul Rahman et al

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Section: Analytical Model and Analysismentioning

confidence: 96%

Novel Planar Interdigital Sensors

Rahman

Mukhopadhyay

2014

Novel Sensors for Food Inspection: Modelling, Fabrication and Experimentation

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“…The sensor developed is based on the InterDigital (ID) design that has been successfully employed in other fields, such as the estimation of the nitrate contaminantion [15] and to sense the presence of dangerous marine biotoxins in seafood as developed by Sayifudin et al [16]. ID sensors have also been developed and employed biomedical applications [17].…”

Section: Interdigital Impedance Sensormentioning

confidence: 99%

Monitoring of Biodiesel Transesterification Process Using Impedance Measurement

Rachmanto¹,

Allanson²,

Matthews³

et al. 2014

IJMMM

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Abstract-Transesterification is commonly used to produce biodiesel from methylester. In order to control the conversion process it is often useful to employ process monitoring and in particular monitor the mass transfer processes that limit the initial reaction rates. Such monitoring of the initial phase of reaction may provide opportunity for process optimization. Previous work has identified many methods to monitor reaction progress. This paper proposes the use of a simple method which is able to provide information regarding the progress of mass transfer and chemical reaction during biodiesel production. The process uses impedance measurement. The experimentally determined impedance results clearly show the two important phases of the transesterification reaction, a mass transfer control phase followed by a kinetically controlled phase.

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“…A novel planar interdigital sensor based sensing system has been developed for detection of dangerous marine biotoxins in seafood [32]. The main objective is to sense the presence of dangerous contaminated acid in mussels and other seafood by observing the change of reactance of the planar interdigital sensors.…”

Section: Food Quality and Environmental Monitoringmentioning

confidence: 99%