via www.nist.gov
Technologies from wind turbines to electric vehicles rely on critical materials called rare-earth elements.
These elements, though often abundant, can be difficult and increasingly costly to come by. Now, scientists looking for alternatives have reported in ACS’ journal Chemistry of Materials a new way to make nanoparticles that could replace some rare-earth materials and help ensure the continued supply of products people have come to depend on.
Rare-earth elements have unique characteristics that make them very useful. For example, the world’s strongest magnets are made with neodymium. A little too powerful for your refrigerator, these magnets are incorporated into computer disk drives, power windows and wind turbines. But rare earths are challenging to mine and process, and prices can rise quickly in a short period of time. Given the increasing demand for rare earths, Alberto López-Ortega, Claudio Sangregorio and colleagues set out to find substitutes for use in strong magnets.
The researchers used a mixed iron-cobalt oleate complex in a one-step synthetic approach to produce magnetic core-shell nanoparticles. The resulting materials showed strong magnetic properties and energy-storing capabilities. Their approach could signal an efficient new strategy toward replacing rare earths in permanent magnets and keeping costs stable, the researchers say.
The Latest on: Magnetic core-shell nanoparticles
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The Latest on: Magnetic core-shell nanoparticles
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While nanoparticles are usually designed for ... Pluronic ® is an amphiphilic block copolymer that forms nanosized core–shell structures in acqueous solution. Pluronic P85 is a novel class ...
- Nanostructures and Nanotechnologyon April 9, 2021 at 10:56 am
Recent advances in gold-metal oxide core-shell nanoparticles: Synthesis, characterization, and their application for heterogeneous catalysis. Frontiers of Chemical Science and Engineering, Vol. 10, ...
- Computational high-throughput screening of alloy nanoclusters for electrocatalytic hydrogen evolutionon April 6, 2021 at 3:00 am
The formation of core–shell or intermixed nanostructures results in superior catalytic properties with regard to one of the components, such as NiPt, CoPt, CuPd nanoparticles. For the ...
- Nanomedicine Strategies for Hematological Malignancies: What Is Next?on April 4, 2021 at 5:01 pm
Nanoparticles applied as drug-delivery systems ... Pluronic ® is an amphiphilic block copolymer that forms nanosized core–shell structures in acqueous solution. Pluronic P85 is a novel class ...
- Nanoparticle-laden droplets of liquid crystals: Interactive morphogenesis and dynamic assemblyon April 4, 2021 at 5:01 pm
The ability to achieve precise organization of nanoparticles ... type to the core-shell type, with NP partitioned into the droplet core and radial disclinations. This interactive behavior is ...
- Solution Synthesis of Inorganic Films and Nanostructured Materialson April 2, 2021 at 1:54 am
Recent results were presented on the growth of: (i) highly crystalline, nanopatterned and composite functional oxide films, (ii) nanoparticles and nanocrystals ... films with ZnO1-xSx and ZnO nanorods ...
- Nanoimprinted multifunctional nanoprobes for a homogeneous immunoassay in a top-down fabrication approachon March 16, 2021 at 4:07 am
It is yet complicated to synthesize a narrow size distribution of nano-objects from a single (magnetic) material. Core/shell nanoparticles with a magnetic core and a plasmonic shell have been ...
- Bioinspired bright noniridescent photonic melanin supraballson March 3, 2021 at 4:00 pm
We demonstrate a feasible solution for producing structural colors inspired by bird feathers. We have designed core-shell nanoparticles using high–refractive index (RI) (~1.74) melanin cores and ...
- Magnetic Resonance Laboratoryon October 28, 2019 at 5:20 pm
Magnetic Resonance Imaging (MRI) is a noninvasive experimental technique which has found broad application in clinical medicine and is a maturing method for studies in engineering and physics. Our ...
- 2015 Publicationson January 12, 2019 at 2:08 pm
Mechanism of Multivalent Nanoparticle Encounter with HIV-1 for Potency Enhancement ... Dan, N. Compound release from core-shell carriers triggered by oscillating fields: Monte Carlo simulations.
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