Size selectable nanoparticle assemblies with magnetic anisotropy tunable across the superparamagnetic to ferromagnetic range

2016 ◽  
Vol 52 (91) ◽  
pp. 13337-13340 ◽  
Author(s):  
Jacek K. Stolarczyk ◽  
Carla J. Meledandri ◽  
Sarah P. Clarke ◽  
Dermot F. Brougham
Keyword(s):  
Magnetic Anisotropy ◽  
Biomedical Applications ◽  
Magnetic Nanoparticle ◽  
Nanoparticle Assemblies ◽  
Novel Approach ◽  
Nanoparticle Clusters

We present a novel approach for the preparation of magnetic nanoparticle clusters of controlled size and selectable magnetic anisotropy, which provides materials with properties selectable for biomedical applications and as components in magnetically responsive nanocomposites.

Simulated Clustering Dynamics of Colloidal Magnetic Nanoparticles

Nanoscale ◽  
2021 ◽  
Author(s):  
Frederik Laust Durhuus ◽  
Lau Halkier Wandall ◽  
Mathias Hoeg Boisen ◽  
Mathias Kure ◽  
Marco Beleggia ◽  
...  
Keyword(s):  
Magnetic Nanoparticles ◽  
Self Assembly ◽  
Biomedical Applications ◽  
Magnetic Nanoparticle ◽  
Bottom Up ◽  
Novel Materials ◽  
Nanoparticle Clusters ◽  
Clustering Dynamics

Magnetically guided self-assembly of nanoparticles is a promising bottom-up method to fabricate novel materials and superstructures, such as, for example, magnetic nanoparticle clusters for biomedical applications. The existence of assembled...

Polymer-Assisted Magnetic Nanoparticle Assemblies for Biomedical Applications

2019 ◽  
Vol 3 (1) ◽  
pp. 121-142 ◽  
Author(s):  
Yuhuan Li ◽  
Nan Wang ◽  
Xumin Huang ◽  
Fangyuan Li ◽  
Thomas P. Davis ◽  
...  
Keyword(s):  
Biomedical Applications ◽  
Magnetic Nanoparticle ◽  
Nanoparticle Assemblies

Monodisperse magnetic nanoparticle assemblies prepared at scale by competitive stabiliser desorption

2015 ◽  
Vol 3 (44) ◽  
pp. 8638-8643 ◽  
Author(s):  
Tsedev Ninjbadgar ◽  
Eoin K. Fox ◽  
Jose Hierrezuelo ◽  
Fadwa El Haddassi ◽  
Dermot F. Brougham
Keyword(s):  
Oleic Acid ◽  
Iron Oxide ◽  
Iron Oxide Nanoparticles ◽  
Magnetic Nanoparticle ◽  
Oxide Nanoparticles ◽  
Nanoparticle Assemblies ◽  
Nanoparticle Clusters ◽  
Reproducible Method

We report a scalable and reproducible method to assemble magnetic nanoparticle clusters from oleic acid stabilised iron oxide nanoparticles.

scholarly journals Novel Approach to Tooth Chemistry: Quantification of Human Enamel Apatite in Context for New Biomaterials and Nanomaterials Development

2020 ◽  
Vol 22 (1) ◽  
pp. 279
Author(s):  
Andrzej Kuczumow ◽  
Renata Chałas ◽  
Jakub Nowak ◽  
Wojciech Smułek ◽  
Maciej Jarzębski
Keyword(s):  
Biomedical Applications ◽  
Energy Levels ◽  
New Class ◽  
Novel Approach ◽  
Human Enamel ◽  
Linear Profiles ◽  
Resistant Form ◽  
Molar Teeth ◽  
Stable Core ◽  
Nanoscale Level

A series of linear profiles of the elements of the enamel in human molar teeth were made with the use of an electron microprobe and a Raman microscope. It is postulated that the enamel can be treated as the superposition of variable “overbuilt” enamel on the stable “core” enamel at the macro-, micro- and nanoscale level. The excessive values characterize the “overbuilt enamel”. All the profiles of excessive parameters along the enamel thickness from the enamel surface to the dentin enamel junction (DEJ) can be approximated very precisely with the use of exponential functions, where Ca, P, Cl and F spatial profiles are decaying while Mg, Na, K and CO32− ones are growing distributions. The “overbuilt” apatite formed on the boundary with DEJ, enriched in Na, Mg, OH and carbonates, reacts continuously with Ca, Cl and F, passing into an acid-resistant form of the “overbuilt” enamel. The apparent phases arriving in boundary regions of the “overbuilt enamel” were proposed. Microdiffraction measurements reveal relative variation of energy levels during enamel transformations. Our investigations are the milestones for a further new class of biomaterial and nanomaterial development for biomedical applications.

scholarly journals Numerical Investigation of Ferrofluid Preparation during In-Vitro Culture of Cancer Therapy for Magnetic Nanoparticle Hyperthermia

Sensors ◽  
2021 ◽  
Vol 21 (16) ◽  
pp. 5545 ◽  
Author(s):  
Izaz Raouf ◽  
Piotr Gas ◽  
Heung Soo Kim
Keyword(s):  
Numerical Model ◽  
Cancer Therapy ◽  
Magnetic Nanoparticle ◽  
Research Work ◽  
Thermal Response ◽  
Linear Response Theory ◽  
Novel Approach ◽  
Magnetic Nanoparticle Hyperthermia

Recently, in-vitro studies of magnetic nanoparticle (MNP) hyperthermia have attracted significant attention because of the severity of this cancer therapy for in-vivo culture. Accurate temperature evaluation is one of the key challenges of MNP hyperthermia. Hence, numerical studies play a crucial role in evaluating the thermal behavior of ferrofluids. As a result, the optimum therapeutic conditions can be achieved. The presented research work aims to develop a comprehensive numerical model that directly correlates the MNP hyperthermia parameters to the thermal response of the in-vitro model using optimization through linear response theory (LRT). For that purpose, the ferrofluid solution is evaluated based on various parameters, and the temperature distribution of the system is estimated in space and time. Consequently, the optimum conditions for the ferrofluid preparation are estimated based on experimental and mathematical findings. The reliability of the presented model is evaluated via the correlation analysis between magnetic and calorimetric methods for the specific loss power (SLP) and intrinsic loss power (ILP) calculations. Besides, the presented numerical model is verified with our experimental setup. In summary, the proposed model offers a novel approach to investigate the thermal diffusion of a non-adiabatic ferrofluid sample intended for MNP hyperthermia in cancer treatment.

scholarly journals Formulation and Evaluation of Copper Nanoparticles Loaded Microsponges

2019 ◽  
Vol 11 (04) ◽  
Author(s):  
S. Kothai ◽  
R. Umamaheswari
Keyword(s):  
Copper Nanoparticles ◽  
Targeted Drug Delivery ◽  
Biomedical Applications ◽  
Entrapment Efficiency ◽  
Diffusion Method ◽  
Hibiscus Rosa Sinensis ◽  
Novel Approach ◽  
Targeted Drug ◽  
Antimicrobial And Antioxidant Activity ◽  
Emulsion Solvent Diffusion Method

Microsponges become imperative in the field of targeted drug delivery and in other biomedical applications. There was a clamant need for designing microsponges incorporating with green synthesised metal nanoparticles rather than the chemical drug in order to reduce the side effects of the drug and thus increasing the effectiveness of nature of the whole material. It provokes us to design this novel approach of loading copper nanoparticles into the microsponges. Here in this work, microsponges based on ethyl cellulose and polyvinyl alcohol were synthesised by Quasi-Emulsion Solvent diffusion method in which copper nanoparticles procured from Hibiscus rosa-sinensis leaf extract was incorporated. The Loaded microsponges were characterised by High Resolution Scanning Electron Microscopy (HR-SEM) and Particle size distribution Analyzer (PSA). The Drug content and Entrapment Efficiency of the microsponges were found out. The antimicrobial and antioxidant activity of the loaded microsponges were evaluated.

scholarly journals Detection of Salmonella bacteria in milk using gold-coated magnetic nanoparticle clusters and lateral flow filters

RSC Advances ◽  
2016 ◽  
Vol 6 (54) ◽  
pp. 48445-48448 ◽  
Author(s):  
Jeongin Hwang ◽  
Donghoon Kwon ◽  
Sanghee Lee ◽  
Sangmin Jeon
Keyword(s):  
Magnetic Nanoparticle ◽  
Lateral Flow ◽  
Nanoparticle Clusters ◽  
Novel Method

A novel method was developed for the detection of Salmonella bacteria using gold-coated magnetic nanoparticle clusters (Au/MNCs) and lateral flow filters.

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