WO2009002569A3 - Electromagnetic nanocomposites and methods of manufacture - Google Patents
Electromagnetic nanocomposites and methods of manufacture Download PDFInfo
- Publication number
- WO2009002569A3 WO2009002569A3 PCT/US2008/051725 US2008051725W WO2009002569A3 WO 2009002569 A3 WO2009002569 A3 WO 2009002569A3 US 2008051725 W US2008051725 W US 2008051725W WO 2009002569 A3 WO2009002569 A3 WO 2009002569A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- nanocomposites
- matrix
- giant magnetoresistance
- polymerization
- polymer matrix
- Prior art date
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
- G01R33/06—Measuring direction or magnitude of magnetic fields or magnetic flux using galvano-magnetic devices
- G01R33/09—Magnetoresistive devices
- G01R33/093—Magnetoresistive devices using multilayer structures, e.g. giant magnetoresistance sensors
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y25/00—Nanomagnetism, e.g. magnetoimpedance, anisotropic magnetoresistance, giant magnetoresistance or tunneling magnetoresistance
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Nanotechnology (AREA)
- Physics & Mathematics (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Treatments Of Macromolecular Shaped Articles (AREA)
- Graft Or Block Polymers (AREA)
- Polymerisation Methods In General (AREA)
Abstract
Nanocomposites of magnetic nanoparticles in a polymer matrix which has been heat treated is shown to have good giant magnetoresistance characteristics and structural integrity. The flexible nanocomposites were fabricated using a surface-initiated-polymerization (SIP) method. The uniformly distributed nanoparticles within the polymer matrix favor a continuous carbon matrix formation after heat treatment, rendering the transition from insulating to conductive composites. The coercive forces reflect strong particle loading and matrix dependent magnetic properties. One obtained nanocomposites possess fairly good giant magnetoresistance (MR), with a MR of 7.3 % at room temperature and 14 % at 130 K. Furthermore, the formed carbon matrix had a 7 wt.% argon adsorption potential for fuel cell applications. As an example, the method utilizing physicochemical adsorption of an initiator onto the iron-oxide (Fe2O3) nanoparticle surface was used for urethane polymerization in a tetrahydrofuran (THF) solution.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US88606607P | 2007-01-22 | 2007-01-22 | |
| US60/886,066 | 2007-01-22 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2009002569A2 WO2009002569A2 (en) | 2008-12-31 |
| WO2009002569A3 true WO2009002569A3 (en) | 2009-02-26 |
Family
ID=40186226
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US2008/051725 WO2009002569A2 (en) | 2007-01-22 | 2008-01-22 | Electromagnetic nanocomposites and methods of manufacture |
Country Status (1)
| Country | Link |
|---|---|
| WO (1) | WO2009002569A2 (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8882285B2 (en) | 2011-01-18 | 2014-11-11 | Desmond Walsh | Illuminating safety glove |
| WO2013019137A1 (en) | 2011-08-04 | 2013-02-07 | Institution Of The Russian Academy Of Sciences Tomsk Scientific Center, Siberian Branch, Russian Academy Of Sciences | Oxide ferrimagnetics with spinel structure nanoparticles and iron oxide nanoparticles, biocompatible aqueous colloidal systems comprising nanoparticles, ferriliposomes, and uses thereof |
| DE102014006519A1 (en) | 2014-05-03 | 2015-11-05 | Smart Material Printing B.V. | Use of magnetic and / or magnetizable, polymeric micro- and / or nanocomposites for the production of complex, magnetic and / or magnetizable molded parts using additive manufacturers |
| GB2543604A (en) | 2016-07-20 | 2017-04-26 | Ubicoat Ltd | Production of nanoscale powders of embedded nanoparticles |
| CN110197874B (en) * | 2019-05-29 | 2024-11-19 | 中国科学院宁波材料技术与工程研究所 | A stretchable elastic resistive random access memory and its preparation method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6627314B2 (en) * | 2000-10-06 | 2003-09-30 | Carnegie Mellon University | Preparation of nanocomposite structures by controlled polymerization |
| US6710366B1 (en) * | 2001-08-02 | 2004-03-23 | Ultradots, Inc. | Nanocomposite materials with engineered properties |
| US6838486B2 (en) * | 2003-01-07 | 2005-01-04 | Aps Laboratory | Preparation of metal nanoparticles and nanocomposites therefrom |
| US6855426B2 (en) * | 2001-08-08 | 2005-02-15 | Nanoproducts Corporation | Methods for producing composite nanoparticles |
-
2008
- 2008-01-22 WO PCT/US2008/051725 patent/WO2009002569A2/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6627314B2 (en) * | 2000-10-06 | 2003-09-30 | Carnegie Mellon University | Preparation of nanocomposite structures by controlled polymerization |
| US6710366B1 (en) * | 2001-08-02 | 2004-03-23 | Ultradots, Inc. | Nanocomposite materials with engineered properties |
| US6855426B2 (en) * | 2001-08-08 | 2005-02-15 | Nanoproducts Corporation | Methods for producing composite nanoparticles |
| US6838486B2 (en) * | 2003-01-07 | 2005-01-04 | Aps Laboratory | Preparation of metal nanoparticles and nanocomposites therefrom |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2009002569A2 (en) | 2008-12-31 |
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