Principles and applications of magnetic nanomaterials in magnetically guided bioimaging

Mohapatra, Jeotikanta; Nigam, Saumya; George, Jabin; Arellano, Abril Chavez; Wang, Ping; Liu, J. Ping

doi:10.1016/j.mtphys.2023.101003

Cited by 12 publications

(6 citation statements)

References 171 publications

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“…The study on shape anisotropy at the nanoscale is still in the infant stage, and there are several opportunities open for applications of anisotropic nanoparticles. In the past two decades, Fe 3 O 4 nanoparticles have been primarily studied for various biomedical applications, storage media, etc, and shape anisotropy renders exciting results in many instances [101,118,119]. Anisotropic nanostructures can modulate the effective magnetic anisotropy and therefore control M s and H c. Besides, lower surface energy (for faceted structures) results in a decrease in surface spin disorder and helps to retain perfect stoichiometry.…”

Section: Shape Anisotropy: Change Of Shapementioning

confidence: 99%

Magnetic and electronic properties of anisotropic magnetite nanoparticles

Mitra,

Mohapatra,

Aslam

2024

Mater. Res. Express

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Magnetic materials at the nanometer scale can demonstrate highly tunable properties as a result of their reduced dimensionality. While significant advancements have been made in the production of magnetic oxide nanoparticles over the past decades, maintaining the magnetic and electronic phase stabilities in the nanoscale regime continues to pose a critical challenge. Finite-size effects modify or even eliminate the strongly correlated magnetic and electronic properties through strain effects, altering density and intrinsic electronic correlations. In this review, we examine the influence of nanoparticle size, shape, and composition on magnetic and tunneling magnetoresistance (TMR) properties, using magnetite (Fe3O4) as an example. The magnetic and TMR properties of Fe3O4 nanoparticles are strongly related to their size, shape, and synthesis process. Remarkably, faceted nanoparticles exhibit bulk-like magnetic and TMR properties even at ultra-small size-scale. Moreover, it is crucial to comprehend that TMR can be tailored or enhanced through chemical and/or structural modifications, enabling the creation of "artificially engineered" magnetic materials for innovative spintronic applications.

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Section: Shape Anisotropy: Change Of Shapementioning

confidence: 99%

Magnetic and electronic properties of anisotropic magnetite nanoparticles

Mitra,

Mohapatra,

Aslam

2024

Mater. Res. Express

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“…MPI, a noninvasive technique using biocompatible SPIONs as tracers, can be used for early detection, different staging, and treatment of cancer [88]. Several studies have demonstrated that MPI helps nonspecific targeting of cancer cells by increasing the permeability of SPION and their retention in the cells because of illegitimate alignment of endothelial cells, leaky vasculatures, and poor lymphatic drainage [89]. Yu et al employed a long-circulating SPIONbased tracer designed for MPI, known as LS-008 [59].…”

Section: Cancer Imagingmentioning

confidence: 99%

Advancement of magnetic particle imaging in diagnosis and therapy

Harini,

Girigoswami,

Pallavi

et al. 2024

Adv. Nat. Sci: Nanosci. Nanotechnol.

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Magnetic particle imaging (MPI) has gained significant traction as an ionising radiation-free tomographic method that offers real-time imaging capabilities with enhanced sensitivity and resolutions. In this technique, magnetic nanoparticles (MNPs) are employed, particularly iron oxide nanoparticles with superparamagnetic nature, as probes within the MPI system. These MNPs enable the tracking and precise quantification of particle movement with minimal background noise. The 3D location and concentration of MNPs can provide better insights for multiple applications in vascular imaging, cell tracking, cancer cell imaging, inflammation, implant monitoring, and trauma imaging and can thus accelerate the diagnosis of disorders. The mononuclear phagocyte system provides a significant advantage, as they are involved in the spontaneous clearance of the tracers used in MPI, which readily minimise the toxic effects. Several studies have demonstrated that MPI-based functional neuroimaging is superior to other imaging modalities, providing adequate temporal resolution images with quick scan intervals. In MPI, nanoparticles are solely responsible for the source and visualisation, unlike magnetic resonance imaging (MRI), where nanoparticles were used only as supportive tracers. This review provides an overview of the principle, diagnostic, and therapeutic applications of MPI as well as the advantages and challenges MPI has over other diagnostic imaging methods in modern clinical setups.

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“…For instance, in physics, these materials enhance thermal processes and aid in designing space materials. [1][2][3] In chemistry, they play a crucial role in environmental decontamination and the conversion of raw materials into value-added products. 4,5 Moreover, in medicine, these materials facilitate drug transport within the human body.…”

Section: Introductionmentioning

confidence: 99%