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21. 发明申请

US20070009081A1 Computed tomography system for imaging of human and small animal 审中-公开
标题翻译：用于人和小动物成像的计算机断层扫描系统
公开(公告)号：US20070009081A1
公开(公告)日：2007-01-11
申请号：US11441281
申请日：2006-05-25
申请人： Otto Zhou , Jianping Lu , Yueh Lee , Weili Lin , Yuan Cheng , Jian Zhang
发明人： Otto Zhou , Jianping Lu , Yueh Lee , Weili Lin , Yuan Cheng , Jian Zhang
IPC分类号： A61B6/00 , G01N23/00 , G21K1/12 , H05G1/60
CPC分类号： B82Y10/00 , A61B6/032 , A61B6/4028 , A61B6/508 , A61B6/541 , G01N23/046 , G01N2223/316 , G01N2223/419 , G01N2223/612 , H01J35/065 , H01J2201/30469 , H01J2235/068
摘要： Computed tomography device comprising an x-ray source and an x-ray detecting unit. The x-ray source comprises a cathode with a plurality of individually programmable electron emitting units that each emit an electron upon an application of an electric field, an anode target that emits an x-ray upon impact by the emitted electron, and a collimator. Each electron emitting unit includes an electron field emitting material. The electron field emitting material includes a nanostructured material or a plurality of nanotubes or a plurality of nanowires. Computed tomography methods are also provided.
摘要翻译：计算机断层摄影装置，包括x射线源和x射线检测单元。 x射线源包括具有多个单独可编程的电子发射单元的阴极，每个单独可编程的电子发射单元在施加电场时发射电子，在被所发射的电子撞击时发射x射线的阳极靶和准直器。每个电子发射单元包括电子场发射材料。电子场发射材料包括纳米结构材料或多个纳米管或多个纳米线。还提供了计算机断层扫描方法。

22. 发明申请

US20060274889A1 Method and apparatus for controlling electron beam current 审中-公开
标题翻译：用于控制电子束电流的方法和装置
公开(公告)号：US20060274889A1
公开(公告)日：2006-12-07
申请号：US11415953
申请日：2006-05-02
申请人： Jianping Lu , Otto Zhou , Yuan Cheng
发明人： Jianping Lu , Otto Zhou , Yuan Cheng
IPC分类号： H01J35/00
CPC分类号： H01J35/06 , A61B6/032 , A61B6/4021 , A61B6/4028 , A61B6/405 , A61B6/4488 , A61B6/482 , B82Y10/00 , H01J3/021 , H01J35/065 , H01J35/08 , H01J35/105 , H01J35/14 , H01J35/22 , H01J35/28 , H01J35/30 , H01J2201/30469 , H01J2235/06 , H01J2235/062 , H01J2235/064 , H01J2235/068 , H05G1/34
摘要： An x-ray generating device includes a field emission cathode formed at least partially from a nanostructure-containing material having an emitted electron current density of at least 4 A/cm2. High energy conversion efficiency and compact design are achieved due to easy focusing of cold cathode emitted electrons and dramatic reduction of heating at the anode. In addition, by pulsing the field between the cathode and the gate or anode and focusing the electron beams at different anode materials, pulsed x-ray radiation with varying energy can be generated from a single device. Methods and apparatus for independent control of electron emission current and x-ray energy in x-ray tubes are also provided. The independent control can be accomplished by adjusting the distance between the cathode and anode. The independent control can also be accomplished by adjusting the temperature of the cathode. The independent control can also be accomplished by optical excitation of the cathode. The cathode can include field emissive materials such as carbon nanotubes.
摘要翻译： X射线产生装置包括至少部分地由具有至少4A / cm 2的发射电子电流密度的含纳米结构的材料形成的场致发射阴极。由于容易聚焦冷阴极发射电子并显着降低阳极的加热，因此实现了高能量转换效率和紧凑设计。此外，通过在阴极和栅极或阳极之间脉冲电场并将电子束聚焦在不同的阳极材料处，可以从单个器件产生具有变化能量的脉冲X射线辐射。还提供了用于独立控制X射线管中的电子发射电流和X射线能量的方法和装置。独立控制可以通过调节阴极和阳极之间的距离来实现。独立控制也可以通过调节阴极的温度来实现。独立控制也可以通过阴极的光学激发来实现。阴极可以包括诸如碳纳米管的场发射材料。

23. 发明申请

US20050226361A1 Computed tomography scanning system and method using a field emission x-ray source 有权
标题翻译：计算机断层扫描系统和使用场发射X射线源的方法
公开(公告)号：US20050226361A1
公开(公告)日：2005-10-13
申请号：US11051332
申请日：2005-02-07
申请人： Otto Zhou , Yuan Cheng , Jian Zhang , Yueh Lee , Jianping Lu , Weili Lin
发明人： Otto Zhou , Yuan Cheng , Jian Zhang , Yueh Lee , Jianping Lu , Weili Lin
IPC分类号： A61B6/00 , A61B6/03 , A61B6/14 , G01N23/00 , G01N23/04 , G21K1/12 , H01J35/06 , H01J35/14 , H05G1/60
CPC分类号： A61B6/032 , A61B6/4028 , A61B6/4488 , A61B6/508 , A61B6/541 , B82Y10/00 , G01N23/046 , G01N2223/419 , G01N2223/612 , H01J35/065 , H01J35/14
摘要： Computed tomography scanning systems and methods using a field emission x-ray source are disclosed. An exemplary micro-computed tomography scanner comprises a micro-focus field emission x-ray source, an x-ray detector, an object stage placed between the x-ray source and the detector, an electronic control system and a computer that control the x-ray radiation and detector data collection, and computer software that reconstructs the three dimension image of the object using a series of projection images collected from different projection angles. Exemplary methods obtain a computed tomography image of an object in oscillatory motion using the micro computed tomography scanner.
摘要翻译：公开了使用场致发射X射线源的计算机断层摄影扫描系统和方法。示例性的微型计算机断层扫描仪包括微焦点场发射x射线源，x射线检测器，放置在x射线源和检测器之间的物体台，控制x射线源的电子控制系统和计算机射线辐射和检测器数据采集，以及使用从不同投影角度收集的一系列投影图像重建对象的三维图像的计算机软件。示例性方法使用微型计算机断层摄影扫描仪获得振荡运动中物体的计算机断层摄影图像。

24. 发明授权

US06277318B1 Method for fabrication of patterned carbon nanotube films 有权
标题翻译：图案化碳纳米管膜的制造方法
公开(公告)号：US06277318B1
公开(公告)日：2001-08-21
申请号：US09376457
申请日：1999-08-18
申请人： Christopher Andrew Bower , Otto Zhou , Wei Zhu
发明人： Christopher Andrew Bower , Otto Zhou , Wei Zhu
IPC分类号： B29B1700
CPC分类号： B82Y30/00 , B82Y40/00 , C01B32/16 , C01B2202/02 , H01J9/025 , Y10S977/742 , Y10S977/842 , Y10S977/844 , Y10T428/24893
摘要： A method for fabricating adherent, patterned carbon nanotube films is provided. According to the invention, a substrate is patterned with a carbide-forming material, a carbon-dissolving material, or a low melting point metal. Carbon nanotubes are then deposited onto the patterned substrate, but have relatively poor adhesion to either the substrate material or the patterned material. The substrate is then annealed, typically in vacuum, at a temperature dependent on the particular patterning material, e.g., a temperature at which carbide formation occurs, at which carbon dissolution occurs, or at which the low melting point metal melts. The annealing thereby provides an adherent nanotube film over the patterned areas, while the nanotubes deposited onto the non-patterned areas are easily removed, e.g., by blowing, rubbing, brushing and/or ultrasonication in a solvent such as methanol.
摘要翻译：提供了一种用于制造粘附的图案化碳纳米管膜的方法。根据本发明，用碳化物形成材料，碳溶解材料或低熔点金属对衬底进行图案化。然后将碳纳米管沉积到图案化的衬底上，但对衬底材料或图案化材料的粘附性相对较差。然后在取决于特定图案形成材料的温度，例如发生碳化物形成的温度，发生碳溶解或低熔点金属熔化的温度下，将基材通常在真空中退火。因此退火在图案化区域上提供粘附的纳米管薄膜，而沉积在非图案化区域上的纳米管容易地被去除，例如通过在溶剂如甲醇中吹塑，摩擦，刷涂和/或超声波处理。

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