Enhancement of magnetoimpedance effect in Co‐based amorphous ribbon with a meander structure

Chen, Lei; Zhou, Yong; Lei, Chong; Zhang, Zhimin; Ding, Wen

doi:10.1002/pssa.200925335

Cited by 5 publications

(9 citation statements)

References 16 publications

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“…The fundamental principle for detection of Dynabead-labeled CBs is the detection of the stray fields (H stray ) of the Dynabeads. This is a similar principle as it was previously discussed in many cases of different magnetic biosensors [ 17 , 37 , 38 , 39 ]. When the MI element was moved to the bottom of the detection region of MR-MFD, the Dynabeads trapped in the MFD unit, located above the MI element as shown in Figure 2 A, were magnetized by an external magnetic field (H ex : 0–120 Oe) created by a pair of Helmholtz coils and they emitted a detectable H stray .…”

Section: Methodssupporting

confidence: 60%

“…the development of multi-analyte immunoassay combined with a multi-region bio-analytical system (MRBAS) is a very important task [ 31 , 32 , 33 , 34 , 35 ]. The studies in recent years indicated that a higher MI effect can be reached in a multilayered structure and in thin films shaped as meanders [ 36 , 37 , 38 , 39 , 40 ]. Both high MI response and high sensitivity with respect to an applied magnetic field are the main factors for MI bio-sensing applications.…”

Section: Introductionmentioning

confidence: 99%

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A Multi-Region Magnetoimpedance-Based Bio-Analytical System for Ultrasensitive Simultaneous Determination of Cardiac Biomarkers Myoglobin and C-Reactive Protein

Yang

Wang

Guo

et al. 2018

Sensors

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Cardiac biomarkers (CBs) are substances that appear in the blood when the heart is damaged or stressed. Measurements of the level of CBs can be used in course of diagnostics or monitoring the state of the health of group risk persons. A multi-region bio-analytical system (MRBAS) based on magnetoimpedance (MI) changes was proposed for ultrasensitive simultaneous detection of CBs myoglobin (Mb) and C-reactive protein (CRP). The microfluidic device was designed and developed using standard microfabrication techniques for their usage in different regions, which were pre-modified with specific antibody for specified detection. Mb and CRP antigens labels attached to commercial Dynabeads with selected concentrations were trapped in different detection regions. The MI response of the triple sensitive element was carefully evaluated in initial state and in the presence of biomarkers. The results showed that the MI-based bio-sensing system had high selectivity and sensitivity for detection of CBs. Compared with the control region, ultrasensitive detections of CRP and Mb were accomplished with the detection limits of 1.0 pg/mL and 0.1 pg/mL, respectively. The linear detection range contained low concentration detection area and high concentration detection area, which were 1 pg/mL–10 ng/mL, 10–100 ng/mL for CRP, and 0.1 pg/mL–1 ng/mL, 1 n/mL–80 ng/mL for Mb. The measurement technique presented here provides a new methodology for multi-target biomolecules rapid testing.

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Section: Methodssupporting

confidence: 60%

Section: Introductionmentioning

confidence: 99%

A Multi-Region Magnetoimpedance-Based Bio-Analytical System for Ultrasensitive Simultaneous Determination of Cardiac Biomarkers Myoglobin and C-Reactive Protein

Yang

Wang

Guo

et al. 2018

Sensors

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“…Compared with other structures, meanders have a significant inductance increase, which is an important factor affecting the GMI ratio of the meanders (Gromov et al, 1998). The increase in the number of turns increases the contribution of the negative mutual inductance of the meanders in general (Chen et al, 2009(Chen et al, , 2010, which counteracts the effect of the Ls on the GMI ratio, so that the GMI ratio of the meanders increases significantly with the increase in the number of turns.…”

Section: Resultsmentioning

confidence: 99%

Line spacing effect on the giant magnetoimpedance behavior on microribbon with meander type: a comparison of theory and experiment

Wang,

Yang,

Liu

et al. 2024

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Purpose Microribbon with meander type based on giant magnetoimpedance (GMI) effect has become a research hot spot due to their higher sensitivity and spatial resolution. The purpose of this paper is to further optimize the line spacing to improve the performance of meanders for sensor application. Design/methodology/approach The model of GMI effect of microribbon with meander type is established. The effect of line spacing (Ls) on GMI behavior in meanders is analyzed systematically. Findings Comparison of theory and experiment indicates that decreasing the line spacing increases the negative mutual inductance and a consequent increase in the GMI effect. The maximum value of the GMI ratio increases from 69% to 91.8% (simulation results) and 16.9% to 51.4% (experimental results) when the line spacing is reduced from 400 to 50 µm. The contribution of line spacing versus line width to the GMI ratio of microribbon with meander type was contrasted. This behavior of the GMI ratio is dominated by the overall negative contribution of the mutual inductance. Originality/value This paper explores the effect of line spacing on the GMI ratio of meander type by comparing the simulation results with the experimental results. The superior line spacing is found in the identical sensing area. The findings will contribute to the design of high-performance micropatterned ribbon with meander-type GMI sensors and the establishment of a ribbon-based magnetic-sensitive biosensing system.

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“…The skin effect appears when an AC current is applied to the wire [31]. The inner part of the sample is shielded to AC currents and fields, and the drive current flows through the outer shell of the wire.…”

Section: Resultsmentioning

confidence: 99%

Magnetoimpedance in soft magnetic amorphous and nanostructured wires

et al. 2011

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The surface impedance tensor approach has been used to review the impedance response in a variety of amorphous and nanocrystallized wires. An experimental study on the torsion annealing effect on the magnetoimpedance (MI) behaviour for positive and negative magnetostriction amorphous wires of FeSiB and CoSiB compositions, respectively, has been carried out. Moreover, the influence of the onset nanocrystallization on the MI behaviour in Finemet-type alloys, with particular attention focussed on the case that the wires are annealed under applied torsional stress, is also presented. The analysis of the MI and torsion-impedance (TI) effects allows us to compare the different magnetic characteristics observed in a variety of wires. Special attention is paid to new results of the off-diagonal MI huge responses of these ferromagnetic samples, which are also a very useful source of information on the magnetic properties of the wires.

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Enhancement of magnetoimpedance effect in Co‐based amorphous ribbon with a meander structure

Cited by 5 publications

References 16 publications

A Multi-Region Magnetoimpedance-Based Bio-Analytical System for Ultrasensitive Simultaneous Determination of Cardiac Biomarkers Myoglobin and C-Reactive Protein

A Multi-Region Magnetoimpedance-Based Bio-Analytical System for Ultrasensitive Simultaneous Determination of Cardiac Biomarkers Myoglobin and C-Reactive Protein

Line spacing effect on the giant magnetoimpedance behavior on microribbon with meander type: a comparison of theory and experiment

Magnetoimpedance in soft magnetic amorphous and nanostructured wires

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