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55 条记录 (耗时 0.02 秒)

    Catalyst for synthesis of carbon single-walled nanotubes
    21.
    发明授权
    Catalyst for synthesis of carbon single-walled nanotubes 有权
    用于合成碳单壁纳米管的催化剂

    公开(公告)号：US07485600B2

    公开(公告)日：2009-02-03

    申请号：US10992277

    申请日：2004-11-17

    申请人： Avetik Harutyunyan ,  Toshio Tokune ,  Elena Mora Fernandez

    发明人： Avetik Harutyunyan ,  Toshio Tokune ,  Elena Mora Fernandez

    IPC分类号： B01J23/00 ,  B01J23/70 ,  B01J23/08 ,  B01J20/00 ,  B01J21/00

    CPC分类号： D01F9/127 ,  B82Y30/00 ,  D01F9/1272

    摘要： Methods and processes for preparing supported metal catalysts are provided, where the supported metal catalysts can be used for the bulk synthesis of carbon nanotubes. The salts of the metal and the support are selected such that they are soluble in the same solvent. The catalyst can be prepared from the liquid phase through joint precipitation of the metal and the support material. The methods can be used to increase the metal load on the support. Use of the catalysts increases the yield of the carbon nanotubes.

    摘要翻译： 提供了制备载体金属催化剂的方法和方法，其中负载的金属催化剂可用于碳纳米管的本体合成。 选择金属和载体的盐，使得它们可溶于相同的溶剂。 可以通过金属和载体材料的接合沉淀从液相制备催化剂。 这些方法可用于增加支撑体上的金属负载。 催化剂的使用增加了碳纳米管的产率。

    Method for selective enrichment of carbon nanotubes
    23.
    发明授权
    Method for selective enrichment of carbon nanotubes 有权
    选择性富集碳纳米管的方法

    公开(公告)号：US07150865B2

    公开(公告)日：2006-12-19

    申请号：US10404279

    申请日：2003-03-31

    申请人： Avetik Harutyunyan ,  Toshio Tokune

    发明人： Avetik Harutyunyan ,  Toshio Tokune

    IPC分类号： C09C1/56

    CPC分类号： B82Y30/00 ,  B82Y40/00 ,  C01B32/168 ,  C01B2202/22 ,  D01F9/127

    摘要： A method for treating carbon nanotubes with microwave energy to selective remove metallic-type carbon nanotubes is provided. A sample containing carbon nanotubes is positioned in a microwave cavity at a location corresponding to a maximum in the electric field component of a stationary wave having a microwave frequency. The sample is exposed to the microwave energy for a sufficient period of time to increase the proportion of semiconducting-type carbon nanotubes within the sample. Alternatively, a sample consisting essentially of metallic-type and semiconducting-type carbon nanotubes is exposed to microwave energy for a sufficient period of time to increase the proportion of semiconducting-type carbon nanotubes within the sample.

    摘要翻译： 提供了一种用微波能量处理碳纳米管以选择性去除金属型碳纳米管的方法。 含有碳纳米管的样品位于与微波频率的固定波的电场分量中的最大值相对应的位置处的微波空腔中。 将样品暴露于微波能量足够长的时间以增加样品中半导体型碳纳米管的比例。 或者，基本上由金属型和半导体型碳纳米管组成的样品暴露于微波能量足够的时间以增加样品中半导体型碳纳米管的比例。

    Methods for growing long carbon single-walled nanotubes
    24.
    发明申请
    Methods for growing long carbon single-walled nanotubes 有权
    生长长碳单壁纳米管的方法

    公开(公告)号：US20060228289A1

    公开(公告)日：2006-10-12

    申请号：US11329499

    申请日：2006-01-10

    申请人： Avetik Harutyunyan ,  Elena Mora ,  Toshio Tokune

    发明人： Avetik Harutyunyan ,  Elena Mora ,  Toshio Tokune

    IPC分类号： D01F9/12

    CPC分类号： D01F9/1272 ,  B82Y30/00 ,  B82Y40/00 ,  C01B32/162 ,  C01B2202/02

    摘要： Methods and processes for synthesizing single-wall carbon nanotubes are provided. A carbon precursor gas is contacted with metal catalysts deposited on a support material. The metal catalysts are preferably nanoparticles having diameters less than about 3 nm. The reaction temperature is selected such that it is near the eutectic point of the mixture of metal catalyst particles and carbon. Further, the rate at which hydrocarbons are fed into the reactor is equivalent to the rate of formation of carbon SWNTs for given synthesis temperature. The methods produce carbon single-walled nanotubes having longer lengths.

    摘要翻译： 提供了合成单壁碳纳米管的方法和方法。 碳前体气体与沉积在载体材料上的金属催化剂接触。 金属催化剂优选直径小于约3nm的纳米颗粒。 选择反应温度使其接近金属催化剂颗粒和碳的混合物的共晶点。 此外，烃类进料到反应器中的速率等于给定合成温度下碳SWNTs的形成速率。 该方法产生长度较长的碳单壁碳纳米管。

    Synthesis of small diameter single-walled carbon nanotubes
    26.
    发明申请
    Synthesis of small diameter single-walled carbon nanotubes 有权
    小直径单壁碳纳米管的合成

    公开(公告)号：US20070116632A1

    公开(公告)日：2007-05-24

    申请号：US11418898

    申请日：2006-05-04

    申请人： Avetik Harutyunyan

    发明人： Avetik Harutyunyan

    IPC分类号： D01F9/12

    CPC分类号： D01F9/1272 ,  B82Y30/00

    摘要： Methods, processes, and apparatuses for the large scale synthesis of single-walled carbon nanotubes having small diameters are provided. Metal catalysts having small diameter and narrow distribution of particle sizes are prepared and continuously injected as aerosols into a reactor. The metal catalysts are supported on supports that are substantially free of carbon, and the reactor is configured to control the flow of the gases such that the reaction time and contact of the reactants with the reactor walls can be controlled. Single-walled carbon nanotubes can be continuously synthesized at a large scale and with high yields, and with small diameters and with narrow diameter ranges.

    摘要翻译： 提供了用于大规模合成具有小直径的单壁碳纳米管的方法，工艺和装置。 制备具有小直径和窄粒度分布的金属催化剂，并将其作为气溶胶连续注入反应器。 金属催化剂负载在基本上不含碳的载体上，并且反应器构造成控制气体的流动，从而可以控制反应物与反应器壁的反应时间和接触。 单壁碳纳米管可以大规模，高产率，小直径和窄径范围连续合成。

    Dry powder injector
    27.
    发明授权
    Dry powder injector 有权

    公开(公告)号：US07134618B2

    公开(公告)日：2006-11-14

    申请号：US10727706

    申请日：2003-12-03

    申请人： Avetik Harutyunyan ,  Shoji Isobe

    发明人： Avetik Harutyunyan ,  Shoji Isobe

    IPC分类号： B05B7/14

    CPC分类号： B05B7/1404 ,  B05B7/1445 ,  B05B7/1472 ,  B82Y30/00

    摘要： Methods, processes, and apparatuses for the large scale synthesis of carbon nanostructures are provided. Metal catalysts having small diameter and narrow distribution of particle sizes are prepared and continuously injected as aerosols into a reactor. The metal catalysts are supported on supports that are substantially free of carbon. The metal catalyst, in the form of a powder, is placed in an injector that is shaken vertically. The powder is aerosolized, and the powder entrailed in the gas is passed through a conduit that is bifurcated where one portion delivers the powder to the reactor while the other portion connects back to the ejector that is located in between the gas source and the top part of the container.

    Magnetic nanotransistor
    28.
    发明授权
    Magnetic nanotransistor 有权
    磁性纳米晶体管

    公开(公告)号：US08093669B2

    公开(公告)日：2012-01-10

    申请号：US12463557

    申请日：2009-05-11

    申请人： Avetik Harutyunyan

    发明人： Avetik Harutyunyan

    IPC分类号： H01L29/82

    CPC分类号： H01L43/00 ,  B82Y10/00 ,  B82Y25/00 ,  G11C13/025 ,  H01L29/66984 ,  H01L51/0048 ,  H01L51/0512 ,  Y10S977/936

    摘要： The present invention discloses methods and processes for producing magnetic nanotransistors containing carbon nanotubes. The nanotube is attached to at least one magnetic particle, the nanotube is then placed in between the two fixed magnetic moments, and subjected to an external magnetic field. The current passing through the nanotube can be controlled using the external magnetic field.

    摘要翻译： 本发明公开了制造含有碳纳米管的磁性纳米晶体管的方法和方法。 纳米管附着在至少一个磁性颗粒上，然后将纳米管置于两个固定的磁矩之间，并进行外部磁场。 可以使用外部磁场来控制通过纳米管的电流。

    Methods for synthesis of metal nanowires
    30.
    发明授权
    Methods for synthesis of metal nanowires 有权
    合成金属纳米线的方法

    公开(公告)号：US07341944B2

    公开(公告)日：2008-03-11

    申请号：US11228784

    申请日：2005-09-15

    申请人： Avetik Harutyunyan

    发明人： Avetik Harutyunyan

    IPC分类号： H01L21/44

    CPC分类号： C23C18/1216 ,  C23C18/06 ,  C23C18/08

    摘要： Methods for synthesizing metal nanowires are provided. A metalorganic layer is deposited on a substrate as a thin film. The thermal decomposition of the metalorganic thin film in the presence of air synthesizes metal nanowires. The metal can be varied to produce nanowires with different properties.

    摘要翻译： 提供合成金属纳米线的方法。 金属有机层作为薄膜沉积在基板上。 在空气存在下金属有机薄膜的热分解合成金属纳米线。 金属可以变化以产生具有不同性质的纳米线。