Nonvolatile nanotube diodes and nonvolatile nanotube blocks and systems using same and methods of making same
First Claim
1. A non-volatile composite nanotube switch, comprising:
- a first conductive terminal;
a composite nanotube article comprising a first plurality of nanotubes and a second plurality of nanoscopic particles, the first plurality and the second plurality selected according to a predefined ratio, at least a portion of the composite nanotube article in electrical contact with the first conductive terminal, wherein the ratio of the first plurality and the second plurality is between 1 and 10;
a second conductive terminal in contact with at least a portion of the composite nanotube article, wherein the composite nanotube article is physically and electrically interposed between the first and second conductive terminals; and
control circuitry in electrical communication with and configured to apply electrical stimulus to the first and second conductive terminals.
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Accused Products
Abstract
A high-density memory array. A plurality of word lines and a plurality of bit lines are arranged to access a plurality of memory cells. Each memory cell includes a first conductive terminal and an article in physical and electrical contact with the first conductive terminal, the article comprising a plurality of nanoscopic particles. A second conductive terminal is in physical and electrical contact with the article. Select circuitry is arranged in electrical communication with a bit line of the plurality of bit lines and one of the first and second conductive terminals. The article has a physical dimension that defines a spacing between the first and second conductive terminals such that the nanotube article is interposed between the first and second conducive terminals. A logical state of each memory cell is selectable by activation only of the bit line and the word line connected to that memory cell.
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Citations
55 Claims
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1. A non-volatile composite nanotube switch, comprising:
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a first conductive terminal; a composite nanotube article comprising a first plurality of nanotubes and a second plurality of nanoscopic particles, the first plurality and the second plurality selected according to a predefined ratio, at least a portion of the composite nanotube article in electrical contact with the first conductive terminal, wherein the ratio of the first plurality and the second plurality is between 1 and 10; a second conductive terminal in contact with at least a portion of the composite nanotube article, wherein the composite nanotube article is physically and electrically interposed between the first and second conductive terminals; and control circuitry in electrical communication with and configured to apply electrical stimulus to the first and second conductive terminals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A non-volatile composite nanotube switch, comprising:
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a first conductive terminal; a second conductive terminal; a composite nanotube article physically and electrically interposed between the first conductive terminal and the second conductive terminal, wherein at least a portion of the composite nanotube article is in electrical communication with at least a portion of the first conductive terminal and at least a portion of the second conductive terminal, and wherein the composite nanotube article comprises a first quantity of nanotubes and a second quantity of nanoscopic particles, a ratio of the first quantity to the second quantity being predefined, wherein the ratio of the first quantity to the second quantity is between 1 and 10; and control circuitry in electrical communication with and configured to apply electrical stimulus to at least one of the first and second conductive terminals, wherein the composite nanotube article is configured to switch among a plurality of electronic states in response to a corresponding plurality of electrical stimuli applied by the control circuitry to the first and second conductive terminals, and wherein, for each electronic state, the composite nanotube article provides an electrical pathway of a corresponding resistance between the first and second conductive terminals. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37)
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38. A high-density composite memory array, comprising:
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a plurality of word lines and a plurality of bit lines; a plurality of memory cells, each memory cell comprising; a first conductive terminal; a composite nanotube article in physical and electrical contact with the first conductive terminal, the composite nanotube article comprising a first quantity of nanotubes and a second quantity of nanoscopic particles, a ratio of the first quantity to the second quantity being predefined, wherein the ratio of the first quantity to the second quantity is between 1 and 10; a second conductive terminal in physical and electrical contact with the composite nanotube article and in electrical communication with a word line of the plurality of word lines; and select circuitry in electrical communication with a bit line of the plurality of bit lines and one of the first and second conductive terminals, wherein the composite nanotube article has a physical dimension that defines a spacing between the first and second conductive terminals such that the composite nanotube article is interposed between the first and second conducive terminals, and wherein a logical state of each memory cell is selectable by activation only of the bit line and the word line connected to that memory cell. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55)
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Specification