Current sensors based on GMR effect for smart grid applications

Ouyang, Yong; Wang, Zhongxu; Zhao, Guangzhou; Hu, Jun; Ji, Shijie; He, Jinliang; Wang, Shan X.

doi:10.1016/j.sna.2019.05.002

Cited by 30 publications

(20 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…MR is defined as the phenomenon that the resistance of a material tends to change when the external magnetic fields are applied. Currently, anisotropic magnetoresistance (AMR), giant Magnetoresistance (GMR), and tunneling Magnetoresistance (TMR) have been applied in commercial applications of MR sensors [8][9][10][11][12].…”

Section: Magnetoresistancementioning

confidence: 99%

Current Progress of Magnetoresistance Sensors

Yang

Zhang

2021

Chemosensors

View full text Add to dashboard Cite

Magnetoresistance (MR) is the variation of a material’s resistivity under the presence of external magnetic fields. Reading heads in hard disk drives (HDDs) are the most common applications of MR sensors. Since the discovery of giant magnetoresistance (GMR) in the 1980s and the application of GMR reading heads in the 1990s, the MR sensors lead to the rapid developments of the HDDs’ storage capacity. Nowadays, MR sensors are employed in magnetic storage, position sensing, current sensing, non-destructive monitoring, and biomedical sensing systems. MR sensors are used to transfer the variation of the target magnetic fields to other signals such as resistance change. This review illustrates the progress of developing nanoconstructed MR materials/structures. Meanwhile, it offers an overview of current trends regarding the applications of MR sensors. In addition, the challenges in designing/developing MR sensors with enhanced performance and cost-efficiency are discussed in this review.

show abstract

Section: Magnetoresistancementioning

confidence: 99%

Current Progress of Magnetoresistance Sensors

Yang

Zhang

2021

Chemosensors

View full text Add to dashboard Cite

show abstract

“…One of the major challenges faced by GMR-based sensors is how to meet the requirements of stabilization of thermal drifts since their operating ambient temperature varies meanwhile the GMR effect changes with temperature [11]. Wheatstone bridge configuration, as an effective way to solve the issue of thermal drift, consists of four active resistive elements, which have the same temperature coefficient ratio (TCR), and therefore it could have a null output when temperature drifts [12].…”

Section: Introductionmentioning

confidence: 99%

Tuning the pinning direction of giant magnetoresistive sensor by post annealing process

Cao

Wei

Chen

et al. 2021

Sci. China Inf. Sci.

View full text Add to dashboard Cite

The Internet of Things has created an increasing demand for Giant magnetoresistive (GMR) sensor due to its high sensitivity, low power-consumption and small size. A full Wheatstone bridge GMR sensor is fabricated on 6-inch wafers with annealing process on patterned devices. It can be observed that GMR resistors could have different pinning directions in one wafer by magnetic resistance measurements and MATLAB simulations. The full Wheatstone bridge device shows a sensitivity of 2 mV /V /mT in a linear range of ± 6 mT , and its angular response to surrounding magnetic field is as low as 0.08 mT . These results demonstrate a new approach to high-sensitive and low-cost GMR sensors with controllable post annealing process.

show abstract

“…The capability of converting magnetic signals to electrical signals has led to the successful implementation of sensors based on the MR effect. To date, MR sensors have been widely employed in various applications such as hard disk drives [1], magnetic random access memory (MRAM) [2], pressure measurement [3,4], current sensing [5,6], position sensing [7][8][9], and biosensing [10][11][12] ( Figure 1). The first application of MR sensors to detect biological signals was proposed about 20 years ago by Baselt et al [13], and they have attracted great attention since then [14][15][16].…”

Section: Introductionmentioning

confidence: 99%

“…The authors' perspectives on the pros and cons of different MR biosensors and their future development for next-generation magnetic biosensing will also be provided. [3,5,22,23] with the permission from Elsevier 2019, 2017, 2018, and 2018, respectively.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Advances in Magnetoresistive Biosensors

Saha

et al. 2019

Micromachines

View full text Add to dashboard Cite

Magnetoresistance (MR) based biosensors are considered promising candidates for the detection of magnetic nanoparticles (MNPs) as biomarkers and the biomagnetic fields. MR biosensors have been widely used in the detection of proteins, DNAs, as well as the mapping of cardiovascular and brain signals. In this review, we firstly introduce three different MR devices from the fundamental perspectives, followed by the fabrication and surface modification of the MR sensors. The sensitivity of the MR sensors can be improved by optimizing the sensing geometry, engineering the magnetic bioassays on the sensor surface, and integrating the sensors with magnetic flux concentrators and microfluidic channels. Different kinds of MR-based bioassays are also introduced. Subsequently, the research on MR biosensors for the detection of protein biomarkers and genotyping is reviewed. As a more recent application, brain mapping based on MR sensors is summarized in a separate section with the discussion of both the potential benefits and challenges in this new field. Finally, the integration of MR biosensors with flexible substrates is reviewed, with the emphasis on the fabrication techniques to obtain highly shapeable devices while maintaining comparable performance to their rigid counterparts.

show abstract

Current sensors based on GMR effect for smart grid applications

Cited by 30 publications

References 29 publications

Current Progress of Magnetoresistance Sensors

Current Progress of Magnetoresistance Sensors

Tuning the pinning direction of giant magnetoresistive sensor by post annealing process

Advances in Magnetoresistive Biosensors

Contact Info

Product

Resources

About