Маgnetoresistive Effect in Granular Film Alloys Based on Ag and Fe or Со

Odnodvorets, L. V.; Protsenko, І. Yu.; Tkach, Olena; Shabelnyk, Yu. М.; Shumakova, N. I.

doi:10.21272/jnep.9(2).02021

Cited by 16 publications

(16 citation statements)

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“… 52 Although the GMR effect was primarily observed in a thin film or layered system ( Figure 2 A), it is also observed in other systems such as Co–Au, Co–Ag, and Fe–Ag granular films. 53 − 57 The GMR effect in granular films ( Figure 2 B) is highly related to the spin-dependent interfacial scattering, interparticle coupling, and several are significant for biosensing purposes because of their ability to adapt to the shapes of different biomolecules. 58 , 59 In comparison to other types of sensors, the ability of flexible GMR sensors to respond to an external magnetic field makes them a perfect candidate for wearable real-time body activity monitoring and evaluation of drug-delivery effectiveness.…”

Section: Mr Platformsmentioning

confidence: 99%

Magnetic-Nanosensor-Based Virus and Pathogen Detection Strategies before and during COVID-19

Saha

et al. 2020

ACS Appl. Nano Mater.

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The novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), which causes coronavirus disease 2019 (COVID-19), is a threat to the global healthcare system and economic security. As of July 2020, no specific drugs or vaccines are yet available for COVID-19; a fast and accurate diagnosis for SARS-CoV-2 is essential in slowing the spread of COVID-19 and for efficient implementation of control and containment strategies. Magnetic nanosensing is an emerging topic representing the frontiers of current biosensing and magnetic areas. The past decade has seen rapid growth in applying magnetic tools for biological and biomedical applications. Recent advances in magnetic nanomaterials and nanotechnologies have transformed current diagnostic methods to nanoscale and pushed the detection limit to early-stage disease diagnosis. Herein, this review covers the literature of magnetic nanosensors for virus and pathogen detection before COVID-19. We review popular magnetic nanosensing techniques including magnetoresistance, magnetic particle spectroscopy, and nuclear magnetic resonance. Magnetic point-of-care diagnostic kits are also reviewed aiming at developing plug-and-play diagnostics to manage the SARS-CoV-2 outbreak as well as preventing future epidemics. In addition, other platforms that use magnetic nanomaterials as auxiliary tools for enhanced pathogen and virus detection are also covered. The goal of this review is to inform the researchers of diagnostic and surveillance platforms for SARS-CoV-2 and their performances.

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Section: Mr Platformsmentioning

confidence: 99%

Magnetic-Nanosensor-Based Virus and Pathogen Detection Strategies before and during COVID-19

Saha

et al. 2020

ACS Appl. Nano Mater.

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“…У практичному аспекті зусилля дослідників напрямлені на розробку нових систем із заданими технічними характеристиками, забезпечення стабільності цих властивостей та вдосконалення технологій отримання таких плівкових систем [9][10][11][12][13][14]. Вирішення даних питань є досить складним за рахунок наявності багатьох фундаментальних аспектів, які пов'язані зі специфікою спінової залежності розсіювання електронів провідності від типу магнетного впорядкування, а також розмірними ефектами [15][16][17][18]. Зокрема, на сучасному етапі дослідження явища ГМО, питання про вплив умов термообробки на амплітуду ефекту в багатошарових структурах залишається відкритим та потребує докладного вивчення.…”

Section: вступunclassified

Magnetoresistive and Magnetic Properties of Three-Layer Nanocrystalline Permalloy/Ag/Permalloy Films

Shpetnyi¹,

Shkurdoda²,

Saltykov³

et al. 2021

Metallofiz. Noveishie Tekhnol.

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“…A GMR ratio of 13% at 5 K was observed for Co 38 Cu 62 after annealing at 480 • C. Similarly, a GMR ratio of 9% was observed in the Fe 30 Cu 70 system. Other material systems such as Co-Au [39,40], Co-Ag [41,42], and Fe-Ag [43] granular films were also investigated later on. Since the granular GMR effect largely depends on the spin-dependent interfacial electron scattering and the inter-particle coupling, multiple factors such as particle size, inter-particle distance, annealing temperature, and ferromagnetic volume fraction [42,[44][45][46] need to be considered in the design of the granular GMR systems.…”

Section: Giant Magnetoresistance (Gmr)mentioning

confidence: 99%

Advances in Magnetoresistive Biosensors

Saha

et al. 2019

Micromachines

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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.

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Маgnetoresistive Effect in Granular Film Alloys Based on Ag and Fe or Со

Cited by 16 publications

References 0 publications

Magnetic-Nanosensor-Based Virus and Pathogen Detection Strategies before and during COVID-19

Magnetic-Nanosensor-Based Virus and Pathogen Detection Strategies before and during COVID-19

Magnetoresistive and Magnetic Properties of Three-Layer Nanocrystalline Permalloy/Ag/Permalloy Films

Advances in Magnetoresistive Biosensors

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