scholarly journals Effects of an oscillating magnetic field on ice nucleation in aqueous iron‐oxide nanoparticle dispersions during supercooling and preservation of beef as a food application

2020 ◽  
Vol 43 (11) ◽  
Author(s):  
Taiyoung Kang ◽  
Raymond Hoptowit ◽  
Soojin Jun
Keyword(s):  
Magnetic Field ◽  
Iron Oxide ◽  
Ice Nucleation ◽  
Iron Oxide Nanoparticle ◽  
Nanoparticle Dispersions ◽  
Oxide Nanoparticle ◽  
Oscillating Magnetic Field

scholarly journals Reversible magnetism switching of iron oxide nanoparticle dispersions by controlled agglomeration

2021 ◽  
Author(s):  
Stephan Müssig ◽  
Björn Kuttich ◽  
Florian Fidler ◽  
Daniel Haddad ◽  
Susanne Wintzheimer ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Iron Oxide ◽  
Light Scattering ◽  
Superparamagnetic Iron Oxide ◽  
Iron Oxide Nanoparticle ◽  
Oxide Nanoparticles ◽  
X Ray ◽  
X Ray Scattering ◽  
Nanoparticle Dispersions ◽  
Oxide Nanoparticle

The controlled agglomeration of superparamagnetic iron oxide nanoparticles (SPIONs) was used to rapidly switch their magnetic properties. Small-angle X-ray scattering (SAXS) and dynamic light scattering showed that tailored iron oxide...

Synthesis of spinel iron oxide nanoparticle/organic hybrid for hyperthermia

2008 ◽  
Vol 23 (12) ◽  
pp. 3415-3424 ◽  
Author(s):  
Koichiro Hayashi ◽  
Toshifumi Shimizu ◽  
Hidefumi Asano ◽  
Wataru Sakamoto ◽  
Toshinobu Yogo
Keyword(s):  
Magnetic Field ◽  
Iron Oxide ◽  
Photoelectron Spectroscopy ◽  
Iron Oxide Nanoparticle ◽  
Organic Hybrid ◽  
Oxide Nanoparticle ◽  
Hydrolysis Conditions ◽  
Size Controlled ◽  
Controlled Hydrolysis

Size-controlled spinel iron oxide (SIO) nanoparticle/organic hybrid was synthesized in situ from iron (III) allylacetylacetonate (IAA) at around 80 °C. The formation of SIO particles chemically bound with organics was confirmed by infrared and x-ray photoelectron spectroscopy. The sizes of SIO nanoparticles in the hybrids were monodispersed and ranged from 7 to 23 nm under controlled hydrolysis conditions. The hybrid including SIO particles of 7.3 nm was superparamagnetic, whereas those dispersed with particles above 11 nm were ferrimagnetic. The specific absorption rate (SAR) value was dependent upon the magnetic properties of the hybrid at 100 Oe. The SAR was 15.2 W g−1 in a 230 kHz alternating magnetic field and 100 Oe when the crystallite size of SIO particle in the hybrid was 16 nm. The temperatures of agars dispersed with hybrid powders of 5 and 8 mg ml−1 reached the optimum temperature (42 °C) for 17 and 8 min, respectively. The increase in temperature was controlled in terms of the strength of magnetic field. The simulation of heat transfer in the agar phantom model revealed that the suitable temperature distribution for therapy was attained from 15 to 20 min at 230 kHz and 100 Oe.

scholarly journals Targeted Delivery of Iron Oxide Nanoparticle-Loaded Human Embryonic Stem Cell-Derived Spherical Neural Masses for Treating Intracerebral Hemorrhage

2020 ◽  
Vol 21 (10) ◽  
pp. 3658
Author(s):  
Min Kyoung Kang ◽  
Tae Jung Kim ◽  
Young-Ju Kim ◽  
Lamie Kang ◽  
Jonghoon Kim ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Stem Cells ◽  
Stem Cell ◽  
Iron Oxide ◽  
External Magnetic Field ◽  
Targeted Delivery ◽  
Human Embryonic Stem Cell ◽  
Embryonic Stem ◽  
Iron Oxide Nanoparticle ◽  
Oxide Nanoparticle

This study evaluated the potential of iron oxide nanoparticle-loaded human embryonic stem cell (ESC)-derived spherical neural masses (SNMs) to improve the transportation of stem cells to the brain, ameliorate brain damage from intracerebral hemorrhage (ICH), and recover the functional status after ICH under an external magnetic field of a magnet attached to a helmet. At 24 h after induction of ICH, rats were randomly separated into three experimental groups: ICH with injection of phosphate-buffered saline (PBS group), ICH with intravenous injection of magnetosome-like ferrimagnetic iron oxide nanocubes (FION)-labeled SNMs (SNMs* group), and ICH with intravenous injection of FION-labeled SNMs followed by three days of external magnetic field exposure for targeted delivery by a magnet-embedded helmet (SNMs*+Helmet group). On day 3 after ICH induction, an increased Prussian blue-stained area and decreased swelling volume were observed in the SNMs*+Helmet group compared with that of the other groups. A significantly decreased recruitment of macrophages and neutrophils and a downregulation of pro-inflammatory cytokines followed by improved neurological function three days after ICH were observed in the SNMs*+Helmet group. Hemispheric atrophy at six weeks after ICH was significantly decreased in the SNMs*+Helmet group compared with that of the PBS group. In conclusion, we have developed a targeted delivery system using FION tagged to stem cells and a magnet-embedded helmet. The targeted delivery of SNMs might have the potential for developing novel therapeutic strategies for ICH.

Alternating magnetic field plate for enhanced magnetofection of iron oxide nanoparticle conjugated nucleic acids

2019 ◽  
Vol 469 ◽  
pp. 598-605 ◽  
Author(s):  
Murat Kaya Yapici ◽  
Ahmad Al Nabulsi ◽  
Nahla Rizk ◽  
Selwa Mokhtar Boularaoui ◽  
Nicolas Christoforou ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Iron Oxide ◽  
Nucleic Acids ◽  
Alternating Magnetic Field ◽  
Iron Oxide Nanoparticle ◽  
Field Plate ◽  
Oxide Nanoparticle

scholarly journals On-demand, magnetic hyperthermia-triggered drug delivery: optimisation for the GI tract

2016 ◽  
Vol 4 (9) ◽  
pp. 1704-1711 ◽  
Author(s):  
Laili Che Rose ◽  
Joseph C. Bear ◽  
Paul Southern ◽  
Paul D. McNaughter ◽  
R. Ben Piggott ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Drug Delivery ◽  
Iron Oxide ◽  
Gastrointestinal Tract ◽  
Composite Coating ◽  
Magnetic Hyperthermia ◽  
Iron Oxide Nanoparticle ◽  
Gi Tract ◽  
On Demand ◽  
Oxide Nanoparticle

An orally-administered vehicle for targeted on-demand delivery to the gastrointestinal tract is presented. Hyperthermia is induced from an external AC magnetic field to melt a super paramagnetic iron oxide nanoparticle wax composite coating and hence release the capsule content.

Sign in / Sign up

Export Citation Format

Share Document