Plastic and nonmetallic article shaping or treating: processes – Direct application of electrical or wave energy to work – Molecular aligning or molecular orientating
Reexamination Certificate
2007-01-23
2010-12-21
Nguyen, Khanh (Department: 4122)
Plastic and nonmetallic article shaping or treating: processes
Direct application of electrical or wave energy to work
Molecular aligning or molecular orientating
C264S101000, C264S108000, C264S212000, C264S216000, C264S331190, C264S427000, C264S429000, C148S105000, C148S121000
Reexamination Certificate
active
07854878
ABSTRACT:
A method including providing Au-doped Co nanoparticles. The nanoparticles include a combination of non-ferromagnetic nanoparticles and weakly ferromagnetic nanoparticles. The nanoparticles each have an exterior surface. The surfaces of the nanoparticles are functionalized with 7-(5-uracil-ylcarbamoyl)heptanoic acid. A polymer is provided having a general formula including a uracil group. A dispersion is formed by agitating a solution of the nanoparticles. The solution is spin cast into a film. The film is heated under vacuum at a first temperature, TFM, resulting in inducing ferromagnetism in the non-ferromagnetic nanoparticles and converting the non-ferromagnetic nanoparticles to ferromagnetic nanoparticles, and resulting in enhancing ferromagnetism in the weakly ferromagnetic nanoparticles. The nanoparticles are aligned such that magnetic easy axes of the nanoparticles are oriented by applying a magnetic field to the dispersion while at a second temperature less than TFM. The axes align in a plane parallel to a plane of the film.
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Hedrick James Lupton
Milliron Delia Jane
Nelson Alshakim
Pratt Russell Clayton
Gross Carson
International Business Machines - Corporation
Nguyen Khanh
Schmeiser Olsen & Watts
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