Magnetoimpedance biosensor for Fe3O4 nanoparticle intracellular uptake evaluation

Kumar, Arun; Mohapatra, Shyam S.; Fal-Miyar, V.; Cerdeira, Ana C.; Garcı́a, J.A.; Srikanth, H.; Gass, J.; Kurlyandskaya, G.V.

doi:10.1063/1.2790370

Cited by 72 publications

(48 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…6 In recent years, the Fe 3 O 4 attracted additional attention due to the request from environmental applications in which it be used as an adsorbent due to the high adsorption capacity of magnetite MNPs for heavy metals and organic pollutants. 10 Such a result would be not possible without enormous efforts in the development of fabrication, [11][12][13][14] characterization techniques 15,16 and basic theory in the magnetism of the fine particles 17,18 and assemblies of ferromagnetic nanoparticles. 19 There are different physical and chemical methods for fabrication of the oxide MNPs: hydrothermal synthesis, 11 microemulsion, 12 chemical co-precipitation, 16,20 oxidation of Fe(OH) 2 , 21 heating the material with different types of irradiation, 22 autocombustion, 4 and biomioneralization 23 etc.…”

Section: Introductionmentioning

confidence: 99%

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

et al. 2012

Self Cite

View full text Add to dashboard Cite

Nanoparticles of iron oxides (MNPs) were prepared using the electric explosion of wire technique (EEW). The main focus was on the fabrication of de-aggregated spherical nanoparticles with a narrow size distribution. According to XRD the major crystalline phase was magnetite with an average diameter of MNPs, depending on the fraction. Further separation of air-dry EEW nanoparticles was performed in aqueous suspensions. In order to provide the stability of magnetite suspension in water, we found the optimum concentration of the electrostatic stabilizer (sodium citrate and optimum pH level) based on zeta-potential measurements. The stable suspensions still contained a substantial fraction of aggregates which were disintegrated by the excessive ultrasound treatment. The separation of the large particles out of the suspension was performed by centrifuging. The structural features, magnetic properties and microwave absorption of MNPs and their aqueous solutions confirm that we were able to obtain an ensemble in which the magnetic contributions come from the spherical MNPs. The particle size distribution in fractionated samples was narrow and they showed a similar behaviour to that expected of the superparamagnetic ensemble. Maximum obtained concentration was as high as 5 % of magnetic material (by weight). Designed assembly of de-aggregated nanoparticles is an example of on-purpose developed magnetic nanofluid

show abstract

Section: Introductionmentioning

confidence: 99%

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

et al. 2012

Self Cite

View full text Add to dashboard Cite

show abstract

“…8,9 For biological applications it is important to have spherical MNPs to ensure an intracellular up-take. 2,10 Although some progress has been made in fabricating spherical MNPs, the shape is still one of the most difficult parameters to control. In addition, modern drug delivery technologies require a rather large amount of the uniform material.…”

Section: Introductionmentioning

confidence: 99%

Spherical magnetic nanoparticles fabricated by electric explosion of wire

et al. 2011

Self Cite

View full text Add to dashboard Cite

We report the first use of an electrophysical method of electric explosion of wire for preparing magnetic nanoparticles of iron oxide. X-ray diffraction, transmission electron microscopy, magnetization and magnetic resonance measurements were comparatively analyzed. They indicated that the shape of magnetic nanoparticles is close to being spherical. The production order of 100g per hour by this method is advantageous when a large amount of material is needed for applications

show abstract

“…Magnetoimpedance (MI) is the change of the high frequency impedance of a soft ferromagnet under application external magnetic field [1][2][3][4]. Mathematical description of the magnetoimpedance phenomenon requires analytical solution of the Maxwellґs equations that can be done only for simplest geometries and using approximations [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

High Frequency Magnetoimpedance of FeNi/Cu/FeNi Sensitive Elements with Different Geometries

Volchkov

Svalov

Kurlyandskaya

2009

SSP

View full text Add to dashboard Cite

Abstract. In this work magnetoimpedance (MI) behaviour was studied experimentally for Fe 19 Ni 81 (175 nm)/Cu(350 nm)/Fe 19 Ni 81 (175 nm) sensitive elements deposited by rf-sputtering. A constant magnetic field was applied in plane of the sandwiches during deposition perpendicular to the Cu-lead in order to induce a magnetic anisotropy. Sandwiches with different width (w) of FeNi parts were obtained. The complex impedance was measured as a function of the external magnetic field for a frequency range of 1 MHz to 700 MHz for MI elements with different geometries. Some of MI experimental data are comparatively analysed with finite elements numerical calculations data. The obtained results can be useful for optimization of the design of miniaturized MI detectors. IntroductionMagnetoimpedance (MI) is the change of the high frequency impedance of a soft ferromagnet under application external magnetic field [1][2][3][4]. Mathematical description of the magnetoimpedance phenomenon requires analytical solution of the Maxwellґs equations that can be done only for simplest geometries and using approximations [5][6][7]. For example, analytical solution is impossible in case of MI sandwiched structure ferromagnet/conductor/ferromagnet for narrower central conductive part. The finite elements method (FEM) was proposed as useful numerical method for complex geometry of MI sensitive elements [8][9].In this work the longitudinal MI behaviour was studied for

show abstract

Magnetoimpedance biosensor for Fe3O4 nanoparticle intracellular uptake evaluation

Cited by 72 publications

References 8 publications

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

Iron oxide nanoparticles fabricated by electric explosion of wire: focus on magnetic nanofluids

Spherical magnetic nanoparticles fabricated by electric explosion of wire

High Frequency Magnetoimpedance of FeNi/Cu/FeNi Sensitive Elements with Different Geometries

Contact Info

Product

Resources

About