# US 10,370,790 B2 · Textiles including carbon nanotubes

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- Number: US 10,370,790 B2
- Document ID: US10370790B2
- Status: Granted
- Kind: B2
- Application number: 15/496,486
- Filed: 2017-04-25
- Published: 2018-10-25
- Granted: 2019-08-06
- Earliest claimed: 2017-04-25
- Assignees: International Business Machines Corporation
- Applicants: International Business Machines Corporation
- Inventors: Abram L. Falk; Shu-Jen Han; Bharat Kumar
- Web page: https://patentgrep.com/patent/US10370790B2

## CPC

- D06M 11/74: with carbon or graphite; with carbides; with graphitic acids or their salts
- B32B 5/024: {Woven fabric}
- B32B 5/06: characterised by a fibrous {or filamentary} layer {mechanically connected, e.g. by needling} to another layer, e.g. of fibres, of paper
- B32B 5/26: another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)}
- D06M 11/73: with carbon or compounds thereof (D06M11/67 takes precedence)
- D06M 11/83: with metals; with metal-generating compounds, e.g. metal carbonyls; Reduction of metal compounds on textiles
- D06M 23/08: Processes in which the treating agent is applied in powder or granular form (adhesives for multi-layer textile fabrics D06M17/00)
- H01G 11/36: Nanostructures, e.g. nanofibres, nanotubes or fullerenes
- H10K 85/221: {Carbon nanotubes}
- B32B 2250/02: 2 layers
- B32B 2250/20: All layers being fibrous or filamentary
- B32B 2262/0261: Polyamide fibres
- B32B 2262/062: Cellulose fibres, e.g. cotton
- B32B 2262/103: Metal fibres
- B32B 2262/106: Carbon fibres, e.g. graphite fibres
- B32B 2307/202: Conductive
- B32B 2307/51: Elastic
- B32B 2437/00: Clothing
- B32B 2457/14: Semiconductor wafers
- B32B 2457/16: Capacitors
- D06M 2101/06: cellulosic
- D06M 2101/12: Keratin fibres or silk
- D06M 2101/32: Polyesters
- D06M 2101/34: Polyamides
- D06M 2101/40: Fibres of carbon
- H10K 10/484: {characterised by the channel regions}
- H10K 10/84: Ohmic electrodes, e.g. source or drain electrodes
- H10K 30/81: Electrodes
- Y02E 10/549: Organic PV cells
- D06M: TREATMENT, NOT PROVIDED FOR ELSEWHERE IN CLASS D06, OF FIBRES, THREADS, YARNS, FABRICS, FEATHERS OR FIBROUS GOODS MADE FROM SUCH MATERIALS
- B32B: LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10)
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A textile article includes a first fabric including a plurality of first carbon nanotubes coupled to the first fabric. The first carbon nanotubes of the plurality of first carbon nanotubes are metallic carbon nanotubes. A second fabric includes a plurality of second carbon nanotubes coupled to the second fabric. The second carbon nanotubes of the plurality of second carbon nanotubes are semiconductive carbon nanotubes. The first fabric is interconnected with the second fabric.

## Claims

### Claim 1

A textile article, comprising:
a first fabric comprising a plurality of first carbon nanotubes coupled to the first fabric, wherein the first carbon nanotubes of the plurality of first carbon nanotubes are metallic carbon nanotubes; and
a second fabric comprising a plurality of second carbon nanotubes coupled to the second fabric, wherein the second carbon nanotubes of the plurality of second carbon nanotubes are semiconductive carbon nanotubes, and
wherein the first fabric is woven with the second fabric.

### Claim 2 (depends on 1)

The textile article of claim 1, wherein the first carbon nanotubes of the plurality of first carbon nanotubes are coupled to the first fabric by van der waals forces.

### Claim 3 (depends on 2)

The textile article of claim 2, wherein the second carbon nanotubes of the plurality of second carbon nanotubes are coupled to the second fabric by van der waals forces.

### Claim 4 (depends on 1)

The textile article of claim 1, wherein the interconnected first and second fabrics form at least one of a photovoltaic cell, a sensor, a transistor or a capacitor.

### Claim 5 (depends on 4)

The textile article of claim 4, wherein the second carbon nanotubes form a piezoresistive input device.

### Claim 6 (depends on 1)

The textile article of claim 1, wherein the first and second fabrics each include at least one of cotton, silk, nylon, rayon, or polyester.

### Claim 7 (depends on 1)

The textile article of claim 1, wherein the first fabric comprising the plurality of first carbon nanotubes coupled to the first fabric has a sheet resistivity of about 1 MΩ/square.

### Claim 8 (depends on 7)

The textile article of claim 7, wherein the second fabric comprising the plurality of second carbon nanotubes coupled to the second fabric has a sheet resistivity of about 12 MΩ/square.

### Claim 9 (depends on 1)

The textile article of claim 1, wherein the first and second interconnected fabrics form a stretchable fabric included in a wearable garment.

### Claim 10

A textile article, comprising:
a first fabric comprising a plurality of first carbon nanotubes coupled to the first fabric; and
a second fabric comprising a plurality of second carbon nanotubes coupled to the second fabric, wherein the second carbon nanotubes have an electrical conductivity different from that of the first carbon nanotubes, and
wherein the first fabric is woven with the second fabric.

### Claim 11

The textile article of 10, wherein the first carbon nanotubes are metallic carbon nanotubes, and wherein the second carbon nanotubes are semiconductive carbon nanotubes.

### Claim 12 (depends on 10)

The textile article of claim 10, wherein the first carbon nanotubes of the plurality of first carbon nanotubes are coupled to the first fabric by van der waals forces.

### Claim 13 (depends on 12)

The textile article of claim 12, wherein the second carbon nanotubes of the plurality of second carbon nanotubes are coupled to the second fabric by van der waals forces.

### Claim 14 (depends on 11)

The textile article of claim 11, wherein the second carbon nanotubes form a piezoresistive input device.

### Claim 15 (depends on 10)

The textile article of claim 10, wherein the first fabric comprising the plurality of first carbon nanotubes coupled to the first fabric has a sheet resistivity of about 1 MΩ/square, and wherein the second fabric comprising the plurality of second carbon nanotubes coupled to the second fabric has a sheet resistivity of about 12 MΩ/square.

### Claim 16 (depends on 10)

The textile article of claim 10, wherein the interconnected first and second fabrics form at least one of a photovoltaic cell, a sensor, a transistor or a capacitor.

### Claim 17

A textile article, comprising:
a first fabric including a first yarn, wherein the first yarn includes a plurality of first carbon nanotubes having a first electrical conductivity coupled to the first yarn through van der waals forces; and
a second fabric including a second yarn, wherein the second yarn includes a plurality of second carbon nanotubes having a second electrical conductivity coupled to the second yarn through van der waals forces,
wherein the first electrical conductivity of the first carbon nanotubes is different from the second electrical conductivity of the second carbon nanotubes, and
wherein the first fabric is woven with the second fabric.

### Claim 18

The textile article of 17, wherein the first carbon nanotubes are metallic carbon nanotubes, and wherein the second carbon nanotubes are semiconductive carbon nanotubes.

### Claim 19 (depends on 17)

The textile article of claim 17, wherein the first yarn is dyed with a first carbon nanotube solution comprising the first carbon nanotube, and wherein the second yarn is dyed with a second carbon nanotube solution comprising the second carbon nanotubes.

### Claim 20 (depends on 17)

The textile article of claim 17, wherein the interconnected first and second fabrics form at least one of a photovoltaic cell, a sensor, a transistor or a capacitor.