John C Watt, 691701 Blair Dr NE, Albuquerque, NM 87112

2020024, Jul 30, 2020

Aug 27, 2019

16/552512

- Albuquerque NM, US
Dale L. Huber - Albuquerque NM, US
John Daniel Watt - Albuquerque NM, US
Todd Monson - Albuquerque NM, US

H01F 1/00
C08G 59/32
C08K 3/08
C01G 49/08
C23C 18/50
H01F 17/06
H01F 1/047
H01F 38/30
H01L 49/02

A toroidal microinductor comprises a nanocomposite magnetic core employing superparamagnetic nanoparticles covalently cross-linked in an epoxy network. The core material eliminates energy loss mechanisms in existing inductor core materials, providing a path towards realizing low form factor devices. As an example, both a 2 μH output and a 500 nH input microinductors comprising superparamagnetic iron nanoparticles were modeled for a high-performance buck converter. Both modeled inductors had 50 wire turns, less than 1 cmform factors, less than 1 ΩAC resistance and quality factors, Q's, of 27 at 1 MHz. In addition, the output microinductor had an average output power of 7 W and power density of 3.9 kW/in.

2019025, Aug 22, 2019

Feb 19, 2018

15/899043

- Albuquerque NM, US
John Daniel Watt - Albuquerque NM, US
Jessica Anne Bierner - Albuquerque NM, US

H01F 1/00
C08G 59/32
C08K 3/08

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.

2019012, May 2, 2019

Dec 13, 2018

16/219482

- Albuquerque NM, US
John Daniel Watt - Albuquerque NM, US
Jonathan Chavez - Grovetown GA, US
Lauren Marie Ammerman - Albuquerque NM, US

B22F 9/04
B22F 9/16
B22F 1/00

A method for creating nanoparticles directly from bulk metal by applying ultrasound to the surface in the presence of a two-part surfactant system. Implosive collapse of cavitation bubbles near the bulk metal surface generates powerful microjets, leading to material ejection. This liberated material is captured and stabilized by a surfactant bilayer in the form of nanoparticles. Nanoparticles can be produced regardless of the bulk metal form factor. The method is generally applicable of metals and alloys. The method can be applied to an environmentally important problem, the reclamation of gold from an electronic waste stream.

2017029, Oct 12, 2017

Apr 11, 2017

15/484856

- Albuquerque NM, US
John Daniel Watt - Albuquerque NM, US
Jonathan Chavez - Edgewood NM, US
Lauren Marie Ammerman - Albuquerque NM, US

B22F 9/04
B22F 1/00

The invention provides a green chemistry, aqueous method to synthesize gold nanoparticles directly from bulk gold sources. The method involves the ultrasonication of bulk gold in water in the presence of an alkythiol species and a quaternary ammonium surfactant. An organic bilayer forms on the surface of the gold which renders it susceptible to material ejection from the violent collapse of cavitation bubbles. This ejected material is stabilized in solution by the formation of an organic bilayer and can be easily separated. It can then be subjected to an aqueous digestive ripening step to give a gold nanoparticle ensemble with a well-defined plasmon resonance. This method is applicable to a number of different sources of bulk gold. The method can be applied to an environmentally important problem; the recovery of gold from electronic waste streams. For example, gold nanoparticles can be extracted directly from the surface of SIM cards, with no prior manipulation of the cards necessary.