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Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 23 for “"Magnetic nanoparticles (MNPs)"”.
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DEVELOPMENT OF MAGNETIC NANO-SIZE SOLID ACID CATALYSTS FOR THE PRODUCTION OF BIOFUEL
… IN THIS THESIS, NOVEL ACID-FUNCTIONALIZED MAGNETIC NANOPARTICLES (MNPS) WERE SUCCESSFULLY DEVELOPED AS ACTIVE AND RECYCLABLE SOLID ACID CATALYSTS FOR THE EFFICIENT PRODUCTION OF BIOFUEL WITH GOOD DISPERSIBILITY, HIGH ACIDITY, AND SIMPLE MAGNETIC SEPARATION.
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Design and Fabrication of High Frequency Electromagnetic Coil for Magnetic Particle Imaging
Magnetic Particle Imaging (MPI) is a promising modality which uses Magnetic Nanoparticles (MNPs) for tracer-based imaging in biomedical applications. Aside from their use in imaging, MNPs are increasingly being utilized for therapeutics, controlled targeted drug delivery, and diagnostics. These …
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Targeted magnetic nanoparticles for remote manipulation of protein aggregation
Local heat delivered by magnetic nanoparticles (MNPs) selectively attached to their target proteins can be used to manipulate and break up toxic or obstructive aggregates. We applied this magnetic hyperthermia treatment to the amyloid beta (A[beta]) peptide, which unnaturally folds and …
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Catheter for endoscopic magnetomotive optical coherence tomography
… is a novel technique which uses targeted magnetic contrast agents for contrast enhancement of OCT imaging. In MM-OCT, microspheres and magnetic nanoparticles (MNPs) are introduced into tissue and an electromagnet is used to generate a small modulated magnetic field within the tissue during …
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Magnetomotive dynamics of magnetic particles for optical imaging contrast and elastography
Magnetic particles offer several distinct advantages compared to other types of contrast agents. Their controllable size, high magnetic susceptibility and the ability of non contact manipulation through external magnetic fields allow their use in a wide variety of applications in biology and …
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Magnetothermal Modulation of Nerve Growth
Magnetic nanoparticles (MNPs) provide several mechanisms for wireless neuromodulation. MNPs under applied AC magnetic fields (AMFs) exhibit hysteresis loss, which can activate heat-sensitive ion channels such as TRPV1. This magnetothermal modulation requires AMFs with peak field strengths of up to …
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Self-assembly of magnetic nanoparticles: A tool for building at the nanoscale
Nanoparticles can be used as building blocks of materials. Properties of such materials depend on the organization of the constituent particles. Thus, control over particle organization enables control over material properties. However, robust and scalable methods for arranging nanoparticles are …
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Radio frequency heating of magnetic perovskite nanoparticles in solution for biomedical applications
Magnetic nanoparticles (MNPs) are widely used in many different sectors especially within biological applications for heat generation or as contrast agents in magnetic resonant imaging. Our research concentrates on the magnetic susceptibility of MNPs and the effect on heat generation applications …
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Magnetothermal multiplexing for biomedical applications
Research on biomedical applications of magnetic nanoparticles (MNPs) has increasingly sought to demonstrate noninvasive actuation of cellular processes and material responses using heat dissipated in the presence of an alternating magnetic field (AMF). By modeling the dependence of hysteresis …
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Engineering bacterial magnetic nanoparticles
… alternative source of non-toxic biocompatible magnetic nanoparticles (MNPs). A magnetosome contains Fe2O4 magnetite with properties superior to MNPs synthesized by the traditional chemical route. However, synthesis of magnetosomes on large scale has not been achieved yet because magnetotactic …
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Miniaturized electromagnetic biosensors for circulating cancer biomarker detection
… cancer biomarkers, we developed electromagnetic biosensing systems for rapid and quantitative molecular analysis. First, we report portable nuclear magnetic resonance (NMR) system that detects cancer cells or proteins labelled with magnetic nanoparticles (MNPs). The developed NMR system …
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Application of whole-cell biosensor for the impact of crude oil exploration on the environment of the Niger Delta
… tool to the chemical analysis methods. The novel magnetic bio-reporter device developed with the magnetic nanoparticles (MNPs) functionalization and also the device on Simultaneous and online detection of crude oil contamination via biological- phase micro-extraction and bios-sensing (BPME-BS) in …
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Application of whole-cell biosensor for the impact of crude oil exploration on the environment of the Niger Delta
… tool to the chemical analysis methods. The novel magnetic bio-reporter device developed with the magnetic nanoparticles (MNPs) functionalization and also the device on Simultaneous and online detection of crude oil contamination via biological- phase micro-extraction and bios-sensing (BPME-BS) in …
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Interaction of Nanoparticles with RF, AC, and Static Magnetic Fields in Thermal and Non-Thermal Cancer Therapy Applications
Electromagnetics plays a crucial role in the interdisciplinary science of addressing the complex problem of targeted cancer therapy. Thermal therapies such as radio-frequency and microwave hyperthermia and ablation techniques though effective in ablating tumors are non-target specific. The …
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Magnetomotive optical coherence tomography and elastography with applications in magnetic thermotherapy dosimetry
Magnetic nanoparticles (MNPs), with their versatility, have raised extensive interest in the field of biomedicine. MNPs can be delivered to the tumors as therapeutic agents in magnetic thermotherapy (MT) to ablate the malignancies. Remotely manipulated with an external magnetic field, the same MNPs …
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Engineering functional biomaterials to advance environmental and resource sustainability
… on three key objectives: (1) designing a novel magnetic nanoplatform for protein immobilization; (2) evaluating this nanoplatform by fabricating protein-based biosorbents for the selective recovery and efficient separation of rare earth elements (REEs); and (3) engineering renewable enzyme …
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Single-sided magnetic nanoparticles imaging scanner for early detection of breast cancer
Electromagnetic coils form the basis of magnetic particle imaging (MPI) scanners. Previous scanner designs employ Helmholtz coil arrangement which has low sensitivity and high cost of fabrication. Furthermore, the scanners have long signal acquisition time and high memory requirement. This research …
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Deposition of Electroactive Polymers onto Polymer Nanofibers for Nerve Regeneration
… Furthermore, the scaffold is engineered with magnetic nanoparticles (MNPs) to provide a remote-controlled option for the delivery of electrical inputs through the generation of eddy currents when exposed to alternating magnetic fields. The biocompatibility of the fabricated composite has been …
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Investigation Of Temperature Dependent Magnetic Hyperthermia In Fe3o4 Ferrofluids
<p>Magnetic nanoparticles (MNPs) of Fe3O4 and gamma-Fe2O3 have been exploited in the biomedical fields for imaging, targeted drug delivery and magnetic hyperthermia. Magnetic hyperthermia (MHT), the production of heat using ferrofluids, colloidal suspensions of MNPs, in an external AC magnetic …
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Phase and Rheological Behavior of Langmuir Films at the Air/Water Interface: Polyhederal Oligomeric Silsesquioxanes (POSS), POSS/Polymer Blends, and Magnetic Nanoparticles
… silsesquioxane (POSS), polymer blends, and magnetic nanoparticles (MNPs). In a first time, SLS is employed to study POSS molecules. The interfacial rheological properties of trisilanolisobutyl-POSS (TiBuP) indicate that TiBuP forms a viscoelastic Langmuir film that is almost perfectly …
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