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| Method for integrating thermistor |
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| Light emitting device |
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Inorganic dopants, inks and related nanotechnology
| Details |
Inventors: Yadav, Tapesh; Alexander, John;
Assignee: NanoProducts Corporation (Longmont, CO)
Primary Examiner: Le; H. Thi
Assistant Examiner:
Attorney, Agent or Firm: Hogan & Hartson LLP, Langley; Stuart T.
Ink compositions with modified properties result from using a powder size below 100 nanometers. Colored inks are illustrated. Nanoscale coated, uncoated, whisker inorganic fillers are included. The pigment nanopowders taught comprise one or more elements from the group actinium, aluminum, antimony, arsenic, barium, beryllium, bismuth, cadmuim, calcium, cerium, cesium, chalcogenide, cobalt, copper, dysprosium, erbium, europium, gadolinium, gallium, gold, hafnium, hydrogen, indium, iridium, iron, lanthanum, lithium, magnesium, manganese, mendelevium, mercury, molybdenum, neodymium, neptunium, nickel, niobium, nitrogen, oxygen, osmium, palladium, platinum, potassium, praseodymium, promethium, protactinium, rhenium, rubidium, scandium, silver, sodium, strontium, tantalum, terbium, thallium, thorium, tin, titanium, tungsten, vanadium, ytterbium, yttrium, zinc, and zirconium. |
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DETAILED DESCRIPTION This invention includes several methods of making non-stoichiometric submicron and nanostructured materials and devices from both stoichiometric and non-stoichiometric precursors.
This invention also includes methods of making stoichiometric materials and devices from non-stoichiometric precursors.
In one aspect, the invention includes an improved sintering technique utilizing submicron non-stoichiometric powders.
The invention also includes a variety of other applications for submicron non-stoichiometric materials, including catalysis, photonic devices, electrical devices and components, magnetic materials and devices, sensors, biomedical devices, electrochemical products, and energy and ion conductors.
In one aspect, this invention includes a variety of methods of producing a non-stoichiometric material.
According to one method, a submicron powder of a stoichiometric material is transformed into a non-stoichiometric powder.
The submicron powder may also be a nanopowder.
If desired, the submicron non-stoichiometric powder may be sintered into a bulk substance.
According to another method, a non-stoichiometric submicron material is produced by quenching a high-temperature vapor of a precursor material to produce a non-stoichiometric submicron powder.
A vapor stream of the high temperature vapor flows from an inlet zone, and this stream is passed through a convergent means to channel the vapor stream through an area where flow is restricted by controlling the cross-section of the flowing stream.
The vapor stream is channeled out of the flow restriction through a divergent means to an outlet pressure which is smaller than the inlet pressure.
This quenches the vapor stream.
The inlet and outlet pressures are maintained, creating a pressure differential between them.
The pressure differential and the cross-section of the flow restriction are adapted to produce a supersonic flow of the vapor stream.
This method may further comprise sintering the resulting powder.
According to yet another method, a nanoscale starting material comprising more than one element is provided
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MEMS 
