Superparamagnetic nanoparticles and nanocomposites
Abstract
The present invention is directed to the syntheses of superparamagnetic nanoparticles and the incorporation of the nanoparticles as the magnetic component to form a strongly magnetic nanocomposite. The superparamagnetic nanoparticles possess no hysteresis and are too small to support eddy currents. The invention uses a ligand exchange procedure to produce aminated nanoparticles that are then cross-linked using epoxy chemistry. The result is a magnetic nanoparticle component that is covalently linked and well separated. By using this ‘matrix-free’ approach, it is possible to substantially increase the magnetic nanoparticle fraction, while still maintaining good separation, leading to a superparamagnetic nanocomposite with strong magnetic properties and low magnetic losses.
- Inventors:
- Issue Date:
- Research Org.:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Org.:
- USDOE National Nuclear Security Administration (NNSA)
- OSTI Identifier:
- 1735055
- Patent Number(s):
- 10720269
- Application Number:
- 15/899,043
- Assignee:
- National Technology & Engineering Solutions of Sandia, LLC (Albuquerque, NM)
- Patent Classifications (CPCs):
-
B - PERFORMING OPERATIONS B82 - NANOTECHNOLOGY B82Y - SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES
C - CHEMISTRY C08 - ORGANIC MACROMOLECULAR COMPOUNDS C08G - MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- DOE Contract Number:
- NA0003525
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 02/19/2018
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 77 NANOSCIENCE AND NANOTECHNOLOGY
Citation Formats
Huber, Dale L., Watt, John Daniel, and Bierner, Jessica Anne. Superparamagnetic nanoparticles and nanocomposites. United States: N. p., 2020.
Web.
Huber, Dale L., Watt, John Daniel, & Bierner, Jessica Anne. Superparamagnetic nanoparticles and nanocomposites. United States.
Huber, Dale L., Watt, John Daniel, and Bierner, Jessica Anne. Tue .
"Superparamagnetic nanoparticles and nanocomposites". United States. https://www.osti.gov/servlets/purl/1735055.
@article{osti_1735055,
title = {Superparamagnetic nanoparticles and nanocomposites},
author = {Huber, Dale L. and Watt, John Daniel and Bierner, Jessica Anne},
abstractNote = {The present invention is directed to the syntheses of superparamagnetic nanoparticles and the incorporation of the nanoparticles as the magnetic component to form a strongly magnetic nanocomposite. The superparamagnetic nanoparticles possess no hysteresis and are too small to support eddy currents. The invention uses a ligand exchange procedure to produce aminated nanoparticles that are then cross-linked using epoxy chemistry. The result is a magnetic nanoparticle component that is covalently linked and well separated. By using this ‘matrix-free’ approach, it is possible to substantially increase the magnetic nanoparticle fraction, while still maintaining good separation, leading to a superparamagnetic nanocomposite with strong magnetic properties and low magnetic losses.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 21 00:00:00 EDT 2020},
month = {Tue Jul 21 00:00:00 EDT 2020}
}
Works referenced in this record:
Magnetic agglomeration method for size control in the synthesis of magnetic nanoparticles
patent, July 2011
- Huber, Dale L.
- US Patent Document 7,972,410