Functional Addressable Magnetic Domains and Their Potential Applications in Theranostics

García-Zepeda, Sihomara Patricia; Santoyo-Salazar, J.

doi:10.1002/9781119754725.ch8

Cited by 1 publication

(2 citation statements)

References 92 publications

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“…The elemental concentration, quantified via XPS, is presented in Table 3. The topography was measured in atomic force microscopy (AFM) mode and, at the same time, magnetic force microscopy (MFM) was used to observe the interactions of the addressable magnetic domains [75], including their topology and particle size. As reference, the topography and profiles from the VC-NP sample were analyzed in Figure 5.…”

Section: 𝑑 = 𝑘𝜆 𝛽Cos 𝜃mentioning

confidence: 99%

“…When the saturation condition (H(↑)) was reached, the magnetic moments were oriented in an addressable direction like the magnetic field and distributed in the surface of sample. Figure 6 shows the alignment of the The topography was measured in atomic force microscopy (AFM) mode and, at the same time, magnetic force microscopy (MFM) was used to observe the interactions of the addressable magnetic domains [75], including their topology and particle size. As reference, the topography and profiles from the VC-NP sample were analyzed in Figure 5.…”

Section: 𝑑 = 𝑘𝜆 𝛽Cos 𝜃mentioning

confidence: 99%

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Direct Polyphenol Attachment on the Surfaces of Magnetite Nanoparticles, Using Vitis vinifera, Vaccinium corymbosum, or Punica granatum

Matías-Reyes,

Alvarado-Noguez,

Pérez-González

et al. 2023

Nanomaterials

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This study presents an alternative approach to directly synthesizing magnetite nanoparticles (MNPs) in the presence of Vitis vinifera, Vaccinium corymbosum, and Punica granatum derived from natural sources (grapes, blueberries, and pomegranates, respectively). A modified co-precipitation method that combines phytochemical techniques was developed to produce semispherical MNPs that range in size from 7.7 to 8.8 nm and are coated with a ~1.5 nm thick layer of polyphenols. The observed structure, composition, and surface properties of the MNPs@polyphenols demonstrated the dual functionality of the phenolic groups as both reducing agents and capping molecules that are bonding with Fe ions on the surfaces of the MNPs via –OH groups. Magnetic force microscopy images revealed the uniaxial orientation of single magnetic domains (SMDs) associated with the inverse spinel structure of the magnetite (Fe3O4). The samples’ inductive heating (H0 = 28.9 kA/m, f = 764 kHz), measured via the specific loss power (SLP) of the samples, yielded values of up to 187.2 W/g and showed the influence of the average particle size. A cell viability assessment was conducted via the MTT and NRu tests to estimate the metabolic and lysosomal activities of the MNPs@polyphenols in K562 (chronic myelogenous leukemia, ATCC) cells.

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Section: 𝑑 = 𝑘𝜆 𝛽Cos 𝜃mentioning

confidence: 99%

Section: 𝑑 = 𝑘𝜆 𝛽Cos 𝜃mentioning

confidence: 99%