On the impedance response of interdigitated electrodes

Dizon, Arthur; Orazem, Mark E.

doi:10.1016/j.electacta.2019.135000

Cited by 23 publications

(17 citation statements)

References 41 publications

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“…It should also be noted that the ohmic impedance obtained after subtraction of the interfacial impedance from the total impedance is complex and might be approximated by the Havriliak and Negami equation . Similarly, the rectangular, recessed, and interdigitated electrodes display frequency dispersion in a very limited high-frequency region. Orazem et al .…”

Section: Definition and Meaning Of The Cpementioning

confidence: 99%

“…It should also be noted that the ohmic impedance obtained after subtraction of the interfacial impedance from the total impedance is complex 24 and might be approximated by the Havriliak and Negami equation. 25 Similarly, the rectangular, 26 recessed, 27 and interdigitated 28 electrodes display frequency dispersion in a very limited high-frequency region. Orazem et al 29 also discovered that the process of the nonuniform mass transfer to rotating disk electrode and charging of the electrode−solution interface cannot be a priori separated and lead to high-frequency frequency dispersion that resembles pseudo-CPE behavior.…”

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confidence: 99%

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The Origin of the Constant Phase Element

Lasia

2022

J. Phys. Chem. Lett.

101

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Section: Definition and Meaning Of The Cpementioning

confidence: 99%

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confidence: 99%

The Origin of the Constant Phase Element

Lasia

2022

J. Phys. Chem. Lett.

101

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“…Each design featured a 2 × 3 nano-sensor array and totally six differently sized capacitors were designed (as shown in Table 1). The thickness of the nano-sensor was ∼300 nm, and IDE sensor dimensions (based on [23]) are shown in Table 1.…”

Section: B Design Of the Idementioning

confidence: 99%

A CMOS-Based Capacitive Biosensor for Detection of a Breast Cancer MicroRNA Biomarker

Kuo

Chen

Huang

et al. 2020

IEEE Open J. Nanotechnol.

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Breast cancer ranks among the most common cancers worldwide and can be lethal when not diagnosed early due to the high probability of metastasis. Herein a complementary metal-oxide-semiconductor (CMOS)-based capacitive nano-biosensor was developed to quickly and accurately quantify the concentration of an early-stage breast cancer diagnostic marker, microRNA-195, in blood. The microRNA probe was immobilized on optimized inter-digitated electrodes (IDE), and CMOS-sensing circuits detected the probe-analyte reaction at microRNA-195 concentrations as low as 0.617 fM. This high sensitivity could be due to the monolithically integrated nature of the circuits, for which "parasitic" effects on the capacitive sensors were markedly low. The CMOS-based capacitive nano-sensor may be promising for early diagnosis of breast cancer.

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“…Indeed, numerous pieces of research highlighting the development of an IDEAs-based biosensor with various detection methods have been extensively reported [ 24 , 25 , 26 ]. Enhanced signal amplification allowing detection of low-concentration bioanalytes displayed by an IDEAs-based biosensor proved to be advantageous for electrochemical biosensing [ 27 , 28 , 29 ]. With an IDEA configuration, the limit of detection (LOD) of a biosensor can be significantly improved [ 30 ].…”

Section: Introductionmentioning

confidence: 99%

Micro and Nano Interdigitated Electrode Array (IDEA)-Based MEMS/NEMS as Electrochemical Transducers: A Review

et al. 2022

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Micro and nano interdigitated electrode array (µ/n-IDEA) configurations are prominent working electrodes in the fabrication of electrochemical sensors/biosensors, as their design benefits sensor achievement. This paper reviews µ/n-IDEA as working electrodes in four-electrode electrochemical sensors in terms of two-dimensional (2D) planar IDEA and three-dimensional (3D) IDEA configurations using carbon or metal as the starting materials. In this regard, the enhancement of IDEAs-based biosensors focuses on controlling the width and gap measurements between the adjacent fingers and increases the IDEA’s height. Several distinctive methods used to expand the surface area of 3D IDEAs, such as a unique 3D IDEA design, integration of mesh, microchannel, vertically aligned carbon nanotubes (VACNT), and nanoparticles, are demonstrated and discussed. More notably, the conventional four-electrode system, consisting of reference and counter electrodes will be compared to the highly novel two-electrode system that adopts IDEA’s shape. Compared to the 2D planar IDEA, the expansion of the surface area in 3D IDEAs demonstrated significant changes in the performance of electrochemical sensors. Furthermore, the challenges faced by current IDEAs-based electrochemical biosensors and their potential solutions for future directions are presented herein.

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On the impedance response of interdigitated electrodes

Cited by 23 publications

References 41 publications

The Origin of the Constant Phase Element

The Origin of the Constant Phase Element

A CMOS-Based Capacitive Biosensor for Detection of a Breast Cancer MicroRNA Biomarker

Micro and Nano Interdigitated Electrode Array (IDEA)-Based MEMS/NEMS as Electrochemical Transducers: A Review

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