Characterization of Flexible Arrayed pH Sensor Based on Nickel Oxide Films

Chou, Jung-Chuan; Yan, Siao-Jie; Liao, Yi-Hung; Lai, Chih-Hsien; Chen, Jian-Syun; Chen, Hsiang-Yi; Tseng, Ting-Wei; Wu, Tzi Yi

doi:10.1109/jsen.2017.2773143

Cited by 33 publications

(18 citation statements)

References 31 publications

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“…The fabrication process for the arrayed flexible RuO 2 /GO chloride ion sensor was shown in Figure 2 . We used radio frequency sputtering and screen printing technology to fabricate the arrayed flexible RuO 2 pH sensor [ 14 , 29 , 30 ]. The sensing area of RuO 2 electrode is 1 mm × 1 mm.…”

Section: Methodsmentioning

confidence: 99%

“…The voltage-time measurement system for the arrayed flexible RuO 2 /GO chloride sensor was shown in Figure 4 . From Equation (2), the sensing mechanism of the single working electrode, the difference reference electrodes and silver contrast electrodes [ 30 ]. V Out is the output potential of an LT 1167 amplifier, V Ref is the potential of the silver reference electrode, V Sen1 is the potential of the silver contrast electrode, V Sen2 is the potential of the working electrode (sensing membrane), V In1 is the potential difference between the working electrode and the reference electrode and V In2 is the potential difference between the silver contrast electrode and the reference electrode.…”

Section: Methodsmentioning

confidence: 99%

“… The schematic diagram of V-T measurement system with LT1167 instrumentation amplifier for the arrayed flexible RuO 2 /GO chloride sensor [ 30 ]. …”

Section: Figurementioning

confidence: 99%

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Investigation of Sensitivities and Drift Effects of the Arrayed Flexible Chloride Sensor Based on RuO2/GO at Different Temperatures

Tseng

Chou

et al. 2018

Sensors

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We investigate the temperature effect on sensing characteristics and drift effect of an arrayed flexible ruthenium dioxide (RuO2)/graphene oxide (GO) chloride sensor at different solution temperatures between 10 °C and 50 °C. The average sensor sensitivities according to our experimental results were 28.2 ± 1.4 mV/pCl (10 °C), 42.5 ± 2.0 mV/pCl (20 °C), 47.1 ± 1.8 mV/pCl (30 °C), 54.1 ± 2.01 mV/pCl (40 °C) and 46.6 ± 2.1 mV/pCl (50 °C). We found the drift effects of an arrayed flexible RuO2/GO chloride sensor in a 1 M NaCl solution to be between 8.2 mV/h and 2.5 mV/h with solution temperatures from 10 °C to 50 °C.

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Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

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Investigation of Sensitivities and Drift Effects of the Arrayed Flexible Chloride Sensor Based on RuO2/GO at Different Temperatures

Tseng

Chou

et al. 2018

Sensors

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“…The voltage-time (V-T) measurement system used for this study was composed of a readout circuit, a data acquisition card (DAQ card, Model: NI USB-6201, National Instrument Corp., U.S.A.), and a computer with the LabVIEW program (Model: LabVIEW 2011, National Instrument Corp., U.S.A.) [29], [30]. The readout circuit is composed of six instrumentation amplifiers (LT1167, Analog Devices, Inc., U.S.A.).…”

Section: V-t Measurement Systemmentioning

confidence: 99%

Integrating a Plastic Glucose Biosensor Based on Arrayed Screen-Printed Electrodes Utilizing Magnetic Beads with a Microfluidic Device

Chou

Lin

Kuo

et al. 2019

IEEE J. Electron Devices Soc.

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In this study, a novel potentiometric glucose biosensor based on magnetic beads-Nafionglucose oxidase/graphene oxide/aluminium-doped zinc oxide (MBs-Nafion-GOx/GO/AZO) membranes on a PET substrate with arrayed screen-printed electrodes (SPEs) was proposed. The morphologies, elemental analysis, and surface roughnesses of the sensing membranes were characterized. The sensing parameters of the biosensor were investigated by using the voltage-time (V-T) measurement system, which measured sensitivity, linearity, anti-interference ability, reversibility, temperature effect, and lifetime. A microfluidic device using polydimethylsiloxane (PDMS) was integrated with the V-T measurement system to analyze the response characteristics. The results under static solution and microfluidic flow conditions were compared. The results showed that the average sensitivity and linearity of the biosensor depended on the microfluidic flow rate. The best average sensitivity of the glucose biosensor based on MBs-Nafion-GOx/GO/AZO membranes was 20.35 mV/mM at a flow rate of 15 µL/min. INDEX TERMS Aluminium-doped zinc oxide (AZO), graphene oxide (GO), magnetic beads (MBs), glucose biosensor, screen-printed electrodes (SPEs), microfluidics.

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“…During long-term measurement, the response voltage of the sensor is changing with time, which is called the drift phenomenon. The reason that response voltage change is that hydration layer formed on the surface of sensing film [26,27]. The hydroxyl groups were formed on the surface of sensing film in solution, and the hydrated ions, formed by coulombic attraction between water molecules and ions, diffused to the sensing film will result in the formation of hydration layer.…”

Section: Introductionmentioning

confidence: 99%

A New Calibration Circuit Design to Reduce Drift Effect of RuO2 Urea Biosensors

Kuo

Dong

2019

Sensors

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The goal of this study was to reduce the drift effect of RuO2 urea biosensors. A new calibration circuit (NCC) based on the voltage regulation technique with the advantage of having a simple structure was presented. To keep its simplicity, the proposed NCC was composed of a non-inverting amplifier and a voltage calibrating circuit. A ruthenium oxide (RuO2) urea biosensor was fabricated to test the calibrating characteristics of the drift rate of the proposed NCC. The experiment performed in this study was divided into two main stages. For the first stage, a sound RuO2 urea biosensor testing environment was set-up. The RuO2 urea sensing film was immersed in the urea solution for 12 h and the response voltage was measured using the voltage-time (V–T) measurement system and the proposed NCC. The results of the first stage showed that the RuO2 urea biosensor has an average sensitivity of 1.860 mV/(mg/dL) and has a linearity of 0.999 which means that the RuO2 urea biosensor had been well fabricated. The second stage of the experiment verified the proposed NCC’s functions, and the results indicated that the proposed NCC reduced the drift rate of RuO2 urea biosensor to 0.02 mV/hr (98.77% reduction).

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Characterization of Flexible Arrayed pH Sensor Based on Nickel Oxide Films

Cited by 33 publications

References 31 publications

Investigation of Sensitivities and Drift Effects of the Arrayed Flexible Chloride Sensor Based on RuO2/GO at Different Temperatures

Investigation of Sensitivities and Drift Effects of the Arrayed Flexible Chloride Sensor Based on RuO2/GO at Different Temperatures

Integrating a Plastic Glucose Biosensor Based on Arrayed Screen-Printed Electrodes Utilizing Magnetic Beads with a Microfluidic Device

A New Calibration Circuit Design to Reduce Drift Effect of RuO2 Urea Biosensors

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