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公开(公告)号：US20150221487A9
公开(公告)日：2015-08-06
申请号：US14067695
申请日：2013-10-30
IPC: H01J41/12
Abstract: Methods for pumping a chamber to generate substantially adsorbate-free surfaces are described. Pumping systems for achieving a vacuum based on surface adsorption are also described.
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公开(公告)号：US20090072750A1
公开(公告)日：2009-03-19
申请号：US12233859
申请日：2008-09-19
Applicant: Akintunde I. Akinwande , Luis Fernando Velasquez-Garcia
Inventor： Akintunde I. Akinwande , Luis Fernando Velasquez-Garcia
CPC classification number: H01J1/3042 , H01J2201/319
Abstract: A field emitter array structure is provided. The field emitter array structure includes a plurality of vertical un-gated transistor structures formed on a semiconductor substrate. The semiconductor substrate includes a plurality of vertical pillar structures to define said un-gated transistor structures. A plurality of emitter structures are formed on said vertical un-gated transistor structures. Each of said emitter structures is positioned in a ballasting fashion on one of said vertical un-gated transistor structures so as to allow said vertical ungated transistor structure to effectively provide high dynamic resistance with large saturation currents.
Abstract translation: 提供场发射器阵列结构。 场发射极阵列结构包括形成在半导体衬底上的多个垂直未门控晶体管结构。 半导体衬底包括多个垂直柱结构，以限定所述未门控晶体管结构。 在所述垂直非门控晶体管结构上形成多个发射极结构。 所述发射极结构中的每一个以压载方式定位在所述垂直非门控晶体管结构中的一个上，以便允许所述垂直非门控晶体管结构有效地提供具有较大饱和电流的高动态电阻。
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公开(公告)号：US10045752B2
公开(公告)日：2018-08-14
申请号：US14400703
申请日：2013-03-14
Applicant: Rajiv Gupta , Luis Fernando Velasquez-Garcia , Richard Lanza , Berthold K P Horn , Akintunde Ibitayo Akinwande
Inventor： Rajiv Gupta , Luis Fernando Velasquez-Garcia , Richard Lanza , Berthold K P Horn , Akintunde Ibitayo Akinwande
Abstract: Described here is a method for performing phase contrast imaging using an array of independently controllable x-ray sources. The array of x-ray sources can be controlled to produce a distinct spatial pattern of x-ray radiation and thus can be used to encode phase contrast signals without the need for a coded aperture. The lack of coded aperture increases the flexibility of the imaging method. For instance, because a fixed, coded aperture is not required, the angular resolution of the imaging technique can be increased as compared to coded-aperture imaging. Moreover, the lack of a radioopaque coded aperture increases the photon flux that reaches the subject, thereby increasing the attainable signal-to-noise ratio.
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Patent Agency Ranking
4.发明申请DISTRIBUTED, FIELD EMISSION-BASED X-RAY SOURCE FOR PHASE CONTRAST IMAGING 审中-公开分布式，基于场发射的X射线源相位对比成像公开(公告)号：US20150124934A1
公开(公告)日：2015-05-07
申请号：US14400836
申请日：2013-03-14
Applicant: Rajiv Gupta , Luis Fernando Velasquez-Garcia , Richard Lanza , Berthold KP Horn , Tayo Akinwande
Inventor： Rajiv Gupta , Luis Fernando Velasquez-Garcia , Richard Lanza , Berthold KP Horn , Tayo Akinwande
CPC classification number: H01J35/065 , A61B6/032 , A61B6/40 , A61B6/4007 , A61B6/405 , A61B6/4405 , A61B6/484 , G01N23/04 , G01V5/0016 , G01V5/0041 , G21K2207/005 , H01J35/025 , H01J35/04 , H01J35/045 , H01J35/12 , H01J35/14 , H01J35/18 , H01J2201/30449 , H01J2235/062 , H01J2235/068 , H01J2235/087 , H01J2235/186
Abstract: An x-ray source for use in Phase Contrast Imaging is disclosed. In particular, the x-ray source includes a cathode array of individually controlled field-emission electron guns. The field emission guns include very small diameter tips capable of producing a narrow beam of electrons. Beams emitted from the cathode array are accelerated through an acceleration cavity and are directed to a transmission type anode, impinging on the anode to create a small spot size, typically less than five micrometers. The individually controllable electron guns can be selectively activated in patterns, which can be advantageously used in Phase Contrast Imaging.
Abstract translation: 公开了用于相位对比成像的X射线源。 特别地，x射线源包括单独控制的场致发射电子枪的阴极阵列。 场发射枪包括能够产生窄电子束的非常小直径的尖端。 从阴极阵列发射的光束通过加速腔被加速并且被引导到透射型阳极，撞击在阳极上以产生通常小于5微米的小光斑尺寸。 独立可控的电子枪可以以图案选择性地激活，这可以有利地用于相位对比成像。
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公开(公告)号：US20140285084A1
公开(公告)日：2014-09-25
申请号：US14067668
申请日：2013-10-30
CPC classification number: H01J9/025 , H01J1/304 , H01J2201/30411 , H01L21/00 , H01T19/04 , H01T23/00
Abstract: Methods for fabrication of self-aligned gated tip arrays are described. The methods are performed on a multilayer structure that includes a substrate, an intermediate layer that includes a dielectric material disposed over at least a portion of the substrate, and at least one gate electrode layer disposed over at least a portion of the intermediate layer. The method includes forming a via through at least a portion of the at least one gate electrode layer. The via through the at least one gate electrode layer defines a gate aperture. The method also includes etching at least a portion of the intermediate layer proximate to the gate aperture such that an emitter structure at least partially surrounded by a trench is formed in the multilayer structure.
Abstract translation: 描述了自对准浇口尖端阵列的制造方法。 该方法在包括衬底，包括设置在衬底的至少一部分上的电介质材料的中间层以及设置在中间层的至少一部分上的至少一个栅电极层的多层结构上进行。 该方法包括通过至少一个栅极电极层的至少一部分形成通孔。 通过至少一个栅极电极层的通孔限定栅极孔径。 该方法还包括蚀刻靠近栅极孔的中间层的至少一部分，使得在多层结构中形成至少部分被沟槽包围的发射极结构。
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公开(公告)号：US20090113687A1
公开(公告)日：2009-05-07
申请号：US11404676
申请日：2006-04-14
Applicant: Akintunde Ibitayo Akinwande , Blaise Laurent Patrick Gassend , Luis Fernando Velasquez-Garcia
Inventor： Akintunde Ibitayo Akinwande , Blaise Laurent Patrick Gassend , Luis Fernando Velasquez-Garcia
IPC: B23P19/04
CPC classification number: B81C3/002 , Y10T29/49941 , Y10T29/49998 , Y10T29/53909 , Y10T29/53978
Abstract: A hand assembled MEMS apparatus includes meso-scale microfabricated components adapted for being moved by hand relative to one another from a loose-fit preliminary alignment orientation to a relatively tight-fit assembled orientation. A microfabricated spring member is integrally disposed on one of the components to bias the other component towards the assembled orientation. A cam surface disposed on the other component is configured to slidably engage and move the spring member against its bias upon continued hand movement in the assembly direction. A microfabricated abutment is disposed to limit relative movement of the components in at least one direction other than the assembly direction. A microfabricated tactile feedback member is configured to disrupt the hand movement in the assembly direction once the components have substantially reached the assembled orientation.
Abstract translation: 手工组装的MEMS装置包括中等尺寸的微加工部件，其适于相对于彼此从松动配合的初步对准方向移动到相对紧密组装的方向。 一个微小的弹簧构件一体地设置在其中一个部件上，以将另一部件朝向组装方向偏压。 设置在另一部件上的凸轮表面构造成在连续的手沿组装方向移动时可弹性地接合和移动弹簧件抵抗其偏压。 设置微加工支座以限制部件在除组装方向之外的至少一个方向上的相对运动。 一种微制造的触觉反馈构件被构造成一旦组件基本上达到组装取向就破坏在组装方向上的手部移动。
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7.发明申请SURFACE ADSORPTION VACUUM PUMPS AND METHODS FOR PRODUCING ADSORBATE-FREE SURFACES 审中-公开表面吸附真空泵和生产无吸附表面的方法公开(公告)号：US20150017022A1
公开(公告)日：2015-01-15
申请号：US14067695
申请日：2013-10-30
IPC: H01J41/12
Abstract: Methods for pumping a chamber to generate substantially adsorbate-free surfaces are described. Pumping systems for achieving a vacuum based on surface adsorption are also described.
Abstract translation: 描述了泵送室以产生基本上无吸附物质的表面的方法。 还描述了用于实现基于表面吸附的真空的泵送系统。
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公开(公告)号：US07900336B2
公开(公告)日：2011-03-08
申请号：US11404676
申请日：2006-04-14
Applicant: Akintunde Ibitayo Akinwande , Blaise Laurent Patrick Gassend , Luis Fernando Velasquez-Garcia
Inventor： Akintunde Ibitayo Akinwande , Blaise Laurent Patrick Gassend , Luis Fernando Velasquez-Garcia
IPC: B23Q7/00
CPC classification number: B81C3/002 , Y10T29/49941 , Y10T29/49998 , Y10T29/53909 , Y10T29/53978
Abstract: A hand assembled MEMS apparatus includes meso-scale microfabricated components adapted for being moved by hand relative to one another from a loose-fit preliminary alignment orientation to a relatively tight-fit assembled orientation. A microfabricated spring member is integrally disposed on one of the components to bias the other component towards the assembled orientation. A cam surface disposed on the other component is configured to slidably engage and move the spring member against its bias upon continued hand movement in the assembly direction. A microfabricated abutment is disposed to limit relative movement of the components in at least one direction other than the assembly direction. A microfabricated tactile feedback member is configured to disrupt the hand movement in the assembly direction once the components have substantially reached the assembled orientation.
Abstract translation: 手工组装的MEMS装置包括中等尺寸的微加工部件，其适于相对于彼此从松动配合的初步对准方向移动到相对紧密组装的方向。 一个微小的弹簧构件一体地设置在其中一个部件上，以将另一部件朝向组装方向偏压。 设置在另一部件上的凸轮表面构造成在连续的手沿组装方向移动时可弹性地接合和移动弹簧件抵抗其偏压。 设置微加工支座以限制部件在除组装方向之外的至少一个方向上的相对运动。 一种微制造的触觉反馈构件被构造成一旦组件基本上达到组装取向就破坏在组装方向上的手部移动。
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