Analytical modelling of electrical impedance based adulterant sensor for aqueous sucrose solutions

Chakraborty, Sucharita; Das, Chirantan; Bera, Nirmal Kumar; Chattopadhyay, Dipankar; Karmakar, Anupam; Chattopadhyay, Sanatan

doi:10.1016/j.jelechem.2016.11.055

Cited by 23 publications

(19 citation statements)

References 16 publications

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“…The slope of calibration curve demonstrates the change in current for a small amount of change in glucose concentration and therefore, a factor in terms of current is defined for sensitivity of the system as [34–36]: …”

Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Zinc Oxide Nanowire Based Two‐electrode Capacitive Biosensors on Flexible Substrates for Estimating Glucose Content in a Sample

et al. 2021

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The present work deals with fabrication and characterization of the zinc oxide (ZnO) nanowire based novel two‐electrode capacitive biosensors on flexible Polyethylene terephthalate (PET) substrates for accurate estimation of glucose by analyzing the fundamental dielectric nature of the relevant sample. The morphology and crystalline quality of grown nanowires are analyzed by using field‐emission scanning electron microscope (FESEM) and X‐ray diffractometer (XRD), respectively. Current and capacitance values of the device have been studied for ten different glucose concentrations relevant to the physiological standards. The analytical performance of the devices in terms of enzyme activity, reliability and flexibility has also been evaluated.

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Section: Resultsmentioning

confidence: 99%

Fabrication and Characterization of Zinc Oxide Nanowire Based Two‐electrode Capacitive Biosensors on Flexible Substrates for Estimating Glucose Content in a Sample

et al. 2021

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“…As a result, the mobility of charge carriers is increased, which leads to the enhancement of the conductivity. Moreover, the organic ligand being rich in π-electrons may behave as an electron donor on photoexcitation, while the inorganic part (Cu(II) and Cd(II) metal centers) will act as an electron acceptor. − …”

Section: Resultsmentioning

confidence: 99%

Two Geometrical Isomers of a 1D Coordination Polymer: Rationalization by Theoretical Calculations and Variation of Electrical Properties with the Change in Binding Mode of Dicarboxylate Linker

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Chakraborty

Drew

et al. 2019

Crystal Growth & Design

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The joining of bimetallic trinuclear nodes, [(CuL1)2Cd] (where H2L1 = N,N′-bis(α-methylsalicylidene)-1,3-propanediamine) by a spacer, 4,4′-benzenedicarboxylic acid (H2L2), produced two isomeric one-dimensional coordination polymers, having molecular formula {[(CuL1)2CdL2]·H2O} n . Structural characterization revealed that, in complex 1, one of the oxygen atoms of each carboxylate group of the linker [L2]2– coordinates only to the central Cd(II) atom of the node in η1 fashion. However, in complex 2, both the oxygen atoms of each carboxylate group coordinate to the metal centers, one to Cd(II) and the other to a terminal Cu(II) via η2 syn–syn bridging mode. Moreover, the two bridging carboxylate O atoms are mutually cis in 1 while these are trans in 2. These differences resulted in the novel isomeric zigzag (or cis) and linear (or trans) chains of the coordination polymer. DFT calculations revealed that complex 2 is thermodynamically more stable than complex 1 by 4.3 kcal/mol in the gas phase. The electrical characterizations, i.e., impedance, capacitance, and current–voltage (I–V) studies, reveal substantive electrical conductivity for both complexes, but the charge transport properties are higher for 2 in comparison to 1. Both the materials exhibit photoswitching properties as they show increased electrical conductivity under illuminated conditions than under dark conditions. However, complex 2 shows significantly higher photosensitivity (P S = 571.50) compared to 1 (P S = 201.40) and thus has more potentiality toward fabrication of photosensitive devices.

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“…It is utilized to monitor the production and control of the quality of the product produced. Studies of the electrical behaviour of glucose using impedance spectroscopy [49] and impedance spectrum characterization after the addition of Na 2 CO 3 have been performed [30]. The study of impedance signatures as a PAT tool for sucrose crystallization was recently done by [31].…”

Section: Application Of Electrical Impedance Spectroscopy To the Crysmentioning

confidence: 99%

“…In global food processing industries, sucrose (C 12 H 22 O 11 ) production has a significant importance, and crystallization plays a fundamental role in its manufacturing process. Applications of process monitoring techniques in sucrose crystallization and manufacturing have been seldom reported in the literature and works have been limited to cooling and evaporative crystallization and concentration measurements [30]. For instance, applications of EIS [31] and image acquisition by high-speed camera [32] have been successfully demonstrated during cooling crystallization of sucrose.…”

Section: Introductionmentioning

confidence: 99%

Process Monitoring of Antisolvent Based Crystallization in Low Conductivity Solutions Using Electrical Impedance Spectroscopy and 2-D Electrical Resistance Tomography

et al. 2020

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Industrial process monitoring is an important field of research where different chemical processes are monitored and controlled. In this work, electrical impedance spectroscopy (EIS) was used to analyze antisolvent based crystallization of sucrose solutions. The impedance and phase spectra were recorded for four known sucrose concentrations in water, and for each case, four predetermined amounts of ethanol were added. As a result, sixteen different solutions involving sucrose solutions of different concentrations and ethanol to water ratios were analyzed. Significant differences were observed in the magnitude and phase spectra of the solutions in the frequency range of 50 kHz to 300 kHz. The experimentally obtained data from the EIS were converted into frequency response models. Three continuous-time transfer function models of the first-order, second-order, and a second-order with a zero were estimated and compared. In addition, a 2-D electrical resistance tomography (ERT) system with a low conductivity sensor unit was designed and tested with demineralized water, tap water and industrial food grade saturated sucrose solution. Non-conducting phantom and sugar crystals were observed within the saturated sucrose solution using the Bayesian reconstruction algorithm. These demonstrations have the potential to be developed into a multi-frequency ERT systems for monitoring the distribution of the crystals in the reactor. The EIS modality can be a complementary process analytical technology (PAT) tool indicating supersaturation status and provide quality assurance.

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Analytical modelling of electrical impedance based adulterant sensor for aqueous sucrose solutions

Cited by 23 publications

References 16 publications

Fabrication and Characterization of Zinc Oxide Nanowire Based Two‐electrode Capacitive Biosensors on Flexible Substrates for Estimating Glucose Content in a Sample

Fabrication and Characterization of Zinc Oxide Nanowire Based Two‐electrode Capacitive Biosensors on Flexible Substrates for Estimating Glucose Content in a Sample

Two Geometrical Isomers of a 1D Coordination Polymer: Rationalization by Theoretical Calculations and Variation of Electrical Properties with the Change in Binding Mode of Dicarboxylate Linker

Process Monitoring of Antisolvent Based Crystallization in Low Conductivity Solutions Using Electrical Impedance Spectroscopy and 2-D Electrical Resistance Tomography

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