Abstract: A method for making carbon nanotubes is disclosed. The method includes steps of: (a) providing a growing device, wherein the growing device comprises a reacting room having a gas inlet and a gas outlet; (b) forming a catalyst layer on a first planar surface of a growing substrate; (c) placing the growing substrate and a receiving substrate having a second planar surface in the reacting room, wherein the first planar surface and the second planar surface are parallel with each other; (d) introducing a carbonaceous gas in the reaction room to form a gas flow and growing a first plurality of carbon nanotubes from the growing substrate, wherein the first plurality of carbon nanotubes are brought above the receiving substrate by the gas flow; and (e) stopping the introducing the carbonaceous gas such that the first plurality of carbon nanotubes deposits on the receiving substrate.

Abstract: A method for making a thin film transistor, the method comprising: applying a gate electrode on an insulating substrate; covering the gate electrode with an insulating layer; forming a carbon nanotube layer on a growing substrate, wherein the carbon nanotube layer comprises a plurality of carbon nanotubes; transfer printing the carbon nanotube layer from the growing substrate onto the insulating layer, wherein the insulating layer insulates the carbon nanotube layer from the gate electrode; and placing a source electrode and a drain electrode spaced from each other and electrically connected to two opposite ends of at least one of the plurality of carbon nanotubes.

Abstract: A method for fabricating a plurality of biosensors includes the steps of: providing a base with a surface; forming a carbon nanotube array including a plurality of carbon nanotubes substantially parallels to each other on the surface; forming a plurality of lead pairs on the surface, the plurality of lead pairs divides the plurality of carbon nanotubes into a plurality of first carbon nanotubes and a plurality of second carbon nanotubes; eliminating the plurality of second carbon nanotubes; cutting the plurality of first carbon nanotubes to form a plurality of third carbon nanotubes and a plurality of fourth carbon nanotubes; and fabricating a plurality of receptors to electrically connect the plurality of third carbon nanotubes to the plurality of fourth carbon nanotubes.

Abstract: A method for making carbon nanotubes is disclosed. The method includes steps of: (a) providing a growing device, wherein the growing device comprises a reacting room having a gas inlet and a gas outlet; (b) forming a catalyst layer on a first planar surface of a growing substrate; (c) placing the growing substrate and a receiving substrate having a second planar surface in the reacting room, wherein the first planar surface and the second planar surface are parallel with each other; (d) introducing a carbonaceous gas in the reaction room to form a gas flow and growing a first plurality of carbon nanotubes from the growing substrate, wherein the first plurality of carbon nanotubes are brought above the receiving substrate by the gas flow; and (e) stopping the introducing the carbonaceous gas such that the first plurality of carbon nanotubes deposits on the receiving substrate.

Abstract: A method for making a thin film transistor, the method comprising: applying a gate electrode on an insulating substrate; covering the gate electrode with an insulating layer; forming a carbon nanotube layer on a growing substrate, wherein the carbon nanotube layer comprises a plurality of carbon nanotubes; transfer printing the carbon nanotube layer from the growing substrate onto the insulating layer, wherein the insulating layer insulates the carbon nanotube layer from the gate electrode; and placing a source electrode and a drain electrode spaced from each other and electrically connected to two opposite ends of at least one of the plurality of carbon nanotubes.

Abstract: A method for forming a recess defect on a carbon nanotube is introduced. The method includes the following steps. A substrate with a surface is provided. A first carbon nanotube is deposed on the surface of the substrate. A second carbon nanotube is crossed with the first carbon nanotube. The second carbon nanotube crosses the first carbon nanotube and is in contact with the first carbon nanotube. A mask is deposited on substrate, the first carbon nanotube, and the second carbon nanotube. The substrate is etched to remove the second carbon nanotube and form a recess defect on the first carbon nanotube at a crossing position.

Abstract: A method for making a thin film transistor, the method comprising the steps of: providing an insulating substrate; forming a carbon nanotube layer on the insulating substrate, the carbon nanotube layer includes a plurality of carbon nanotubes; applying a source electrode and a drain electrode spaced from each other and electrically connected to two opposite ends of at least one of carbon nanotubes; covering the carbon nanotube layer with an insulating layer; and placing a gate electrode on the insulating layer, the gate electrode being opposite to and electrically insulated from the carbon nanotube layer by the insulating layer.

Abstract: A method for fabricating a plurality of biosensors includes the steps of: providing a base with a surface; forming a carbon nanotube array including a plurality of carbon nanotubes substantially parallels to each other on the surface; forming a plurality of lead pairs on the surface, the plurality of lead pairs divides the plurality of carbon nanotubes into a plurality of first carbon nanotubes and a plurality of second carbon nanotubes; eliminating the plurality of second carbon nanotubes; cutting the plurality of first carbon nanotubes to form a plurality of third carbon nanotubes and a plurality of fourth carbon nanotubes; and fabricating a plurality of receptors to electrically connect the plurality of third carbon nanotubes to the plurality of fourth carbon nanotubes.

Abstract: A biosensor includes a plurality of electrodes and a receptor. The plurality of electrodes comprises a plurality of carbon nanotubes. The receptor are located between the plurality of electrodes and electrically connected to the plurality of carbon nanotubes of the plurality of electrodes. In addition, the receptor reacts to a measured object to lead current variation which is transmitted by the plurality of electrodes.

Abstract: A micro heater includes a first electrode, a second electrode, a first carbon nanotube, and a second carbon nanotube. The first carbon nanotube extends from the first electrode. The second carbon nanotube branches from the second electrode. The first carbon nanotube and the second carbon nanotube intersect with each other to define a node therebetween.

Abstract: A method for making a flexible semiconductor device includes the following steps. A rigid substrate is provided. A flexible substrate is provided, and placed on the rigid substrate. A semiconductor device is directly formed on the flexible substrate using a semiconductor process. After the rigid substrate is removed, the flexible semiconductor device is formed.

Abstract: A method for forming a recess defect on a carbon nanotube is introduced. The method includes the following steps. A substrate with a surface is provided. A first carbon nanotube is deposed on the surface of the substrate. A second carbon nanotube is crossed with the first carbon nanotube. The second carbon nanotube crosses the first carbon nanotube and is in contact with the first carbon nanotube. A mask is deposited on substrate, the first carbon nanotube, and the second carbon nanotube. The substrate is etched to remove the second carbon nanotube and form a recess defect on the first carbon nanotube at a crossing position.

Abstract: A method for making semiconducting carbon nanotubes is provided. A catalyst precursor is disposed on a substrate. The catalyst precursor includes blood. Organic substances contained in the blood are removed and iron ions contained in the blood are oxidized to yield discrete ferric oxide nano-particles on the substrate. The ferric oxide nano-particles are reduced to yield isolated iron nano-particles on the substrate. Carbon nanotubes then grow on the iron nano-particles.

Abstract: A carbon nanotube film structure includes at least one carbon nanotube film or at least two stacked carbon nanotube films. Each carbon nanotube film includes a plurality of carbon nanotubes parallel to the surface of the carbon nanotube film and parallel to each other. A length of the carbon nanotube is equal to or greater than 1 centimeter.

Abstract: A micro heater includes a first electrode, a second electrode, a first carbon nanotube, and a second carbon nanotube. The first carbon nanotube extends from the first electrode. The second carbon nanotube branches from the second electrode. The first carbon nanotube and the second carbon nanotube intersect with each other to define a node therebetween.

Abstract: A biosensor includes a plurality of electrodes and a receptor. The plurality of electrodes comprises a plurality of carbon nanotubes. The receptor are located between the plurality of electrodes and electrically connected to the plurality of carbon nanotubes of the plurality of electrodes. In addition, the receptor reacts to a measured object to lead current variation which is transmitted by the plurality of electrodes.

Abstract: A carbon nanotube film structure includes at least one carbon nanotube film or at least two stacked carbon nanotube films. Each carbon nanotube film includes a plurality of ultralong carbon nanotubes parallel to the surface of the carbon nanotube film and parallel to each other. A length of the ultralong carbon nanotube is equal to or greater than 1 centimeter. The invention is also related to a method for making the above-described carbon nanotube film structure.

Abstract: A method for making semiconducting carbon nanotubes is provided. A catalyst precursor is disposed on a substrate. The catalyst precursor includes blood. Organic substances contained in the blood are removed and iron ions contained in the blood are oxidized to yield discrete ferric oxide nano-particles on the substrate. The ferric oxide nano-particles are reduced to yield isolated iron nano-particles on the substrate. Carbon nanotubes then grow on the iron nano-particles.

Abstract: A method for making a flexible semiconductor device includes the following steps. A rigid substrate is provided. A flexible substrate is provided, and placed on the rigid substrate. A semiconductor device is directly formed on the flexible substrate using a semiconductor process. After the rigid substrate is removed, the flexible semiconductor device is formed.

Abstract: A method for making a thin film transistor, the method comprising the steps of: providing an insulating substrate; forming a carbon nanotube layer on the insulating substrate, the carbon nanotube layer includes a plurality of carbon nanotubes; applying a source electrode and a drain electrode spaced from each other and electrically connected to two opposite ends of at least one of carbon nanotubes; covering the carbon nanotube layer with an insulating layer; and placing a gate electrode on the insulating layer, the gate electrode being opposite to and electrically insulated from the carbon nanotube layer by the insulating layer.