Vertically Aligned Carbon Nanofibers as a Cell Impedance Sensor

Yu, Yongchao; Mamun, Khandaker A. Al; Shanta, Aysha S.; Islam, Syed K.; McFarlane, Nicole

doi:10.1109/tnano.2016.2558102

Cited by 9 publications

(4 citation statements)

References 22 publications

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“…Nevertheless, the sensitivity of coplanar electrodes is limited as a result of the nonuniform field lines [32]. The incorporation of carbon nanofibers to the electrodes improves the sensitivity of these systems [96]. Another possibility is an arrangement of the electrodes in parallel plates [32].…”

Section: Electrode Designs and Configurationsmentioning

confidence: 99%

“…When only two electrodes are used, the voltage is measured at the same current injection electrodes. This configuration is typical in the monitoring of cell cultures by electrochemical impedance spectroscopy (EIS), where the presence of a particle perturbs the electric field lines, and therefore the impedance, between two coplanar electrodes [96].…”

Section: Design and Implementation Of Bioimpedance Instrumentationmentioning

confidence: 99%

“…An adaptive preconditioning can be convenient for this purpose. The application of new approaches like nanotechnologies can improve the sensitivity of bioimpedance systems, as already it has been demonstrated in the case of the incorporation of carbon nanofibers on the electrodes of electrochemical sensors [96] or graphene electrodes for body measurements [267]. Due to the characteristics of an EIT system, with multiple electrodes and the need for processing algorithms, portability and real-time monitoring is an open challenge in the case of EIT.…”

Section: Future Challenges Of Bioimpedancementioning

confidence: 99%

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Fundamentals, Recent Advances, and Future Challenges in Bioimpedance Devices for Healthcare Applications

2019

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This work develops a thorough review of bioimpedance systems for healthcare applications. The basis and fundamentals of bioimpedance measurements are described covering issues ranging from the hardware diagrams to the configurations and designs of the electrodes and from the mathematical models that describe the frequency behavior of the bioimpedance to the sources of noise and artifacts. Bioimpedance applications such as body composition assessment, impedance cardiography (ICG), transthoracic impedance pneumography, electrical impedance tomography (EIT), and skin conductance are described and analyzed. A breakdown of recent advances and future challenges of bioimpedance is also performed, addressing topics such as transducers for biosensors and Lab-on-Chip technology, measurements in implantable systems, characterization of new parameters and substances, and novel bioimpedance applications.

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Section: Electrode Designs and Configurationsmentioning

confidence: 99%

Section: Design and Implementation Of Bioimpedance Instrumentationmentioning

confidence: 99%

Section: Future Challenges Of Bioimpedancementioning

confidence: 99%

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Fundamentals, Recent Advances, and Future Challenges in Bioimpedance Devices for Healthcare Applications

2019

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“…A range of bio-nano-sensing technologies have been developed for biomedical diagnostics; , environment monitoring or pollution monitoring; , and for monitoring temperature, humidity, and other physical parameters in daily life. − The general drawback of these sensors is that they are specifically designed for a certain objective. A sensor sensitive to one physical/chemical parameter can be totally irresponsive to another parameter.…”

Section: Introductionmentioning

confidence: 99%

Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection

Joshi

et al. 2018

ACS Appl. Mater. Interfaces

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We report a flexible sensor array electronic tongue system that is fabricated on a polymer substrate by the laser direct writing process for multiflavor detection. Electronic tongue is a sensing system that is applied to detect different elements with the same sensor array. By analyzing responses from different measurement units, it enables a cross-sensitivity, namely, the ability of the system to responding to a range of different analytes in solution without specific functionalization of sensors. In this article, a six-unit sensing array system was fabricated by a laser direct writing process. Sensing units were introduced on a flexible polyamide surface. A high surface-volume ratio porous carbon structure was created by a laser-induced carbonization process, which provides stable conductive carbon electrodes with high sensitivity. Different surface treatments, such as gold plating, reduced-graphene oxide coating, and polyaniline coating, were accomplished for different measurement units. By applying principal component analysis, this sensing system shows a promising result for the detection of multiple flavors. The detection limit for each element is about 0.1 mM for NaCl and sugar solutions. Also, it is able to detect 10 times diluted commercial table vinegar solution, which originally contains 5% acetic acid. The detection limit is theoretically lower than the human threshold of 10 mM for NaCl and sugar. Besides, the sensing system shows a high sensitivity and selectivity for mixed elements. By mapping the data points, the sensor system could detect flavor combinations and provide a reliable prediction of analyte concentration ratios.

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Ultra-Short Pulsed Laser Manufacturing and Surface Processing of Microdevices

Bai

Wang

et al. 2018

Engineering

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Vertically Aligned Carbon Nanofibers as a Cell Impedance Sensor

Cited by 9 publications

References 22 publications

Fundamentals, Recent Advances, and Future Challenges in Bioimpedance Devices for Healthcare Applications

Fundamentals, Recent Advances, and Future Challenges in Bioimpedance Devices for Healthcare Applications

Laser-Induced Carbon-Based Smart Flexible Sensor Array for Multiflavors Detection

Ultra-Short Pulsed Laser Manufacturing and Surface Processing of Microdevices

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