SACRIFICIAL TEMPLATE METHOD OF FABRICATING A NANOTUBE
    2.
    发明申请
    SACRIFICIAL TEMPLATE METHOD OF FABRICATING A NANOTUBE 审中-公开
    制备纳米管的极限模板方法

    公开(公告)号:WO2004111319A2

    公开(公告)日:2004-12-23

    申请号:PCT/US2003/039200

    申请日:2003-12-08

    IPC: D01F

    Abstract: Methods of fabricating uniform nanotubes are described in which nanotubes were synthesized as sheaths over nanowire templates, such as using a chemical vapor deposition process. For example, single-crystalline zinc oxide (ZnO) nanowires are utilized as templates over which gallium nitride (GaN) is epitaxially grown. The ZnO templates are then removed, such as by thermal reduction and evaporation. The completed single-crystalline GaN nanotubes preferably have inner diameters ranging from 30 nm to 200 nm, and wall thicknesses between 5 and 50 nm. Transmission electron microscopy studies show that the resultant nanotubes are single-crystalline with a wurtzite structure, and are oriented along the direction. The present invention exemplifies single-crystalline nanotubes of materials with a non-layered crystal structure. Similar "epitaxial-casting" approaches could be used to produce arrays and single-crystalline nanotubes of other solid materials and semiconductors. Furthermore, the fabrication of multi-sheath nanotubes are described as well as nanotubes having multiple longitudinal segments.

    Abstract translation: 描述了制造均匀纳米管的方法,其中纳米管在纳米线模板上合成为鞘,例如使用化学气相沉积工艺。 例如,单晶氧化锌(ZnO)纳米线被用作在其上外延生长氮化镓(GaN)的模板。 然后去除ZnO模板,例如通过热还原和蒸发。 完成的单晶GaN纳米管的内径优选为30nm至200nm,壁厚为5至50nm。 透射电子显微镜研究表明,所得纳米管是具有纤锌矿结构的单晶,沿着<001>方向取向。 本发明例示了具有非层状晶体结构的材料的单晶纳米管。 可以使用类似的“外延铸造”方法来生产其他固体材料和半导体的阵列和单晶纳米管。 此外,还描述了多皮纳米管的制造以及具有多个纵向段的纳米管。

    SACRIFICIAL TEMPLATE METHOD OF FABRICATING A NANOTUBE
    4.
    发明申请
    SACRIFICIAL TEMPLATE METHOD OF FABRICATING A NANOTUBE 审中-公开
    制备纳米管的极限模板方法

    公开(公告)号:WO2004111319A3

    公开(公告)日:2005-07-07

    申请号:PCT/US0339200

    申请日:2003-12-08

    Abstract: Methods of fabricating uniform nanotubes are described in which nanotubes were synthesized as sheaths over nanowire templates, such as using a chemical vapor deposition process. For example, single-crystalline zinc oxide (ZnO) nanowires are utilized as templates over which gallium nitride (GaN) is epitaxially grown. The ZnO templates are then removed, such as by thermal reduction and evaporation. The completed single-crystalline GaN nanotubes preferably have inner diameters ranging from 30 nm to 200 nm, and wall thicknesses between 5 and 50 nm. Transmission electron microscopy studies show that the resultant nanotubes are single-crystalline with a wurtzite structure, and are oriented along the direction. The present invention exemplifies single-crystalline nanotubes of materials with a non-layered crystal structure. Similar "epitaxial-casting" approaches could be used to produce arrays and single-crystalline nanotubes of other solid materials and semiconductors. Furthermore, the fabrication of multi-sheath nanotubes are described as well as nanotubes having multiple longitudinal segments.

    Abstract translation: 描述了制造均匀纳米管的方法,其中纳米管在纳米线模板上合成为鞘,例如使用化学气相沉积工艺。 例如,单晶氧化锌(ZnO)纳米线被用作在其上外延生长氮化镓(GaN)的模板。 然后去除ZnO模板,例如通过热还原和蒸发。 完成的单晶GaN纳米管的内径优选为30nm至200nm,壁厚为5至50nm。 透射电子显微镜研究表明,所得纳米管是具有纤锌矿结构的单晶,沿着<001>方向取向。 本发明例示了具有非层状晶体结构的材料的单晶纳米管。 可以使用类似的“外延铸造”方法来生产其他固体材料和半导体的阵列和单晶纳米管。 此外,还描述了多皮纳米管的制造以及具有多个纵向段的纳米管。

    FUNCTIONAL BIMORPH COMPOSITE NANOTAPES AND METHODS OF FABRICATION
    9.
    发明申请
    FUNCTIONAL BIMORPH COMPOSITE NANOTAPES AND METHODS OF FABRICATION 审中-公开
    功能双峰复合纳米材料及其制备方法

    公开(公告)号:WO2004042785A3

    公开(公告)日:2004-12-16

    申请号:PCT/US0325628

    申请日:2003-08-15

    Abstract: A two-layer nanotape that includes a nanoribbon substrate and an oxide that is epitaxially deposited on a flat surface of the nanoribbon substrate is described. A method for making the nanotape that includes providing plural substrates and placing the substrates in a quartz tube is also described. The oxide is deposited on the substrate using a pulsed laser ablation deposition process. The nanoribbons can be made from materials such as SnO2, ZnO, MgO, AI2O3, Si, GaN, or CdS. Also, the sintered oxide target can be made from materials such as TiO2, transition metal doped TiO2 (e.g., Co0.05Ti0.95O2), BaTiO3, ZnO, transition metal doped ZnO (e.g., Mn0.1Zn0.9O and Ni0.1Zn0.9O), LaMnO3, BaTiO3, PbTiO3, Yba2Cu3Oz, or SrCu2O2 and other p-type oxides. Additionally, temperature sensitive nanoribbon/metal bilayers and their method of fabrication by thermal evaporation are described. Metals such as Cu, Au, Ti, AI, Pt, Ni and others can be deposited on top of the nanoribbon surface. Such devices bend significantly as a function of temperature and are suitable as, for example, thermally activated nanoscale actuators.

    Abstract translation: 描述了包括纳米带基底和外延沉积在纳米带基底的平坦表面上的氧化物的两层纳米带。 还描述了用于制造包括提供多个衬底并将衬底放置在石英管中的纳米带的方法。 使用脉冲激光烧蚀沉积工艺将氧化物沉积在衬底上。 纳米带可以由诸如SnO 2,ZnO,MgO,Al 2 O 3,Si,GaN或CdS的材料制成。 而且,烧结氧化物靶可以由诸如TiO 2,掺杂过渡金属的TiO 2(例如,Co 0.05 TiO 0.925),BaTiO 3,ZnO,过渡金属掺杂的ZnO(例如,Mn 0.1 Zn 0.9 O和Ni 0.1 ZnO)等材料制成。 9O),LaMnO3,BaTiO3,PbTiO3,Yba2Cu3Oz或SrCu2O2和其他p型氧化物。 此外,还描述了温度敏感的纳米带/金属双层及其通过热蒸发制造的方法。 诸如Cu,Au,Ti,Al,Pt,Ni等的金属可以沉积在纳米带表面的顶部。 这些装置作为温度的函数显着弯曲并且适合用作例如热激活的纳米级致动器。

    FUNCTIONAL BIMORPH COMPOSITE NANOTAPES AND METHODS OF FABRICATION
    10.
    发明申请
    FUNCTIONAL BIMORPH COMPOSITE NANOTAPES AND METHODS OF FABRICATION 审中-公开
    功能二聚体复合纳米复合材料及其制备方法

    公开(公告)号:WO2004042785A2

    公开(公告)日:2004-05-21

    申请号:PCT/US2003/025628

    申请日:2003-08-15

    IPC: H01L

    Abstract: A two-layer nanotape that includes a nanoribbon substrate and an oxide that is epitaxially deposited on a flat surface of the nanoribbon substrate is described. A method for making the nanotape that includes providing plural substrates and placing the substrates in a quartz tube is also described. The oxide is deposited on the substrate using a pulsed laser ablation deposition process. The nanoribbons can be made from materials such as SnO 2 , ZnO, MgO, AI 2 O 3 , Si, GaN, or CdS. Also, the sintered oxide target can be made from materials such as TiO 2 , transition metal doped TiO 2 (e.g., Co 0.05 Ti 0.95 O 2 ), BaTiO 3 , ZnO, transition metal doped ZnO (e.g., Mn 0.1 Zn 0.9 O and Ni 0 . 1 Zn 0 . 9 O), LaMnO 3 , BaTiO 3 , PbTiO 3 , Yba 2 Cu 3 O z , or SrCu 2 O 2 and other p-type oxides. Additionally, temperature sensitive nanoribbon/metal bilayers and their method of fabrication by thermal evaporation are described. Metals such as Cu, Au, Ti, AI, Pt, Ni and others can be deposited on top of the nanoribbon surface. Such devices bend significantly as a function of temperature and are suitable as, for example, thermally activated nanoscale actuators.

    Abstract translation: 描述了包括纳米薄片基底和外延沉积在纳米薄片的平坦表面上的氧化物的双层纳米线。 还描述了一种制造纳米线的方法,其包括提供多个基板并将基板放置在石英管中。 氧化物使用脉冲激光烧蚀沉积工艺沉积在衬底上。 纳米带可以由诸如SnO 2,ZnO,MgO,Al 2 O 3,Si,GaN或CdS的材料制成。 此外,烧结氧化物靶可以由诸如TiO 2,过渡金属掺杂的TiO 2(例如Co 0.05 Ti 0.95 O 2),BaTiO 3,ZnO,过渡金属掺杂的ZnO(例如,Mn0.1Zn0.9O和Ni0.1Zn0)的材料制成。 9O),LaMnO3,BaTiO3,PbTiO3,Yba2Cu3Oz或SrCu2O2等p型氧化物。 另外,描述了温度敏感的纳米银/金属双层及其通过热蒸发制造的方法。 诸如Cu,Au,Ti,Al,Pt,Ni等金属可以沉积在纳米骨表面的顶部。 这样的装置作为温度的函数显着弯曲,并且适合于例如热活化的纳米级致动器。

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