ELECTRON SOURCE, METHOD FOR MANUFACTURING SAME, EMITTER, AND DEVICE INCLUDING SAME

    公开(公告)号:US20230215679A1

    公开(公告)日:2023-07-06

    申请号:US17996469

    申请日:2021-04-14

    CPC classification number: H01J9/042 H01J1/16 H01J37/063

    Abstract: An electron source according to the present disclosure includes a columnar portion made of a first material having an electron emission characteristic; and a tubular portion that is disposed to surround the columnar portion and made of a second material having a higher work function than the first material, wherein a hole that extends in a direction from one end face toward the other end face and has a substantially circular cross-sectional shape is formed in the tubular portion, and the columnar portion has a substantially triangular or substantially quadrangular cross-sectional shape and is fixed to the tubular portion in an abutting engagement with an inner surface of the hole.

    EMITTER
    5.
    发明申请
    EMITTER 有权
    发电机

    公开(公告)号:US20160372295A1

    公开(公告)日:2016-12-22

    申请号:US15186717

    申请日:2016-06-20

    Inventor: Christian RIEDL

    Abstract: An emitter has a basic unit with at least one emission surface. Accordingly, the basic unit has deep structuring in a region of the at least one emission surface. More specifically, the basic unit has the deep structuring on both a front side and on a rear side in the region of the emission surface for improving emission properties.

    Abstract translation: 发射器具有至少一个发射表面的基本单元。 因此,基本单元在至少一个发射表面的区域中具有深度结构。 更具体地,基本单元在发射表面的区域中具有在前侧和后侧上的深度结构,用于改善发射特性。

    Self-regenerating nanotips for low-power electric propulsion (EP) cathodes
    7.
    发明授权
    Self-regenerating nanotips for low-power electric propulsion (EP) cathodes 有权
    用于低功率电力推进(EP)阴极的自再生纳米片

    公开(公告)号:US08080930B2

    公开(公告)日:2011-12-20

    申请号:US11852122

    申请日:2007-09-07

    CPC classification number: F03H1/00 H01J2201/30407

    Abstract: Spindt-type field-emission cathodes for use in electric propulsion (EP) systems having self-assembling nanostructures that can repeatedly regenerate damaged cathode emitter nanotips. A nanotip is created by applying a negative potential near the surface of a liquefied base metal to create a Taylor cone converging to a nanotip, and solidifying the Taylor cone for use as a field-emission cathode. When the nanotip of the Taylor cone becomes sufficiently blunted or damaged to affect its utility, the base metal is re-liquefied by application of a heat source, a negative potential is reapplied to the surface of the base metal to recreate the Taylor cone, and a new nanotip is generated by solidifying the base metal.

    Abstract translation: Spindt型场致发射阴极,用于具有自组装纳米结构的电力推进(EP)系统,可以反复再生损坏的阴极发射器纳米尖端。 通过在液化贱金属的表面附近施加负电位以产生会聚到纳米尖端的泰勒锥,并固化泰勒锥以用作场致发射阴极来产生纳米尖端。 当泰勒锥的纳米尖端变得足够钝或损坏以影响其效用时,通过施加热源来重新液化贱金属,将负电位重新施加到贱金属的表面以再生泰勒锥,以及 通过固化贱金属产生新的纳米尖端。

    Carbon nanotube arrays for field electron emission
    8.
    发明授权
    Carbon nanotube arrays for field electron emission 有权
    用于场电子发射的碳纳米管阵列

    公开(公告)号:US07868531B2

    公开(公告)日:2011-01-11

    申请号:US11381982

    申请日:2006-05-05

    Applicant: Kangning Liang

    Inventor: Kangning Liang

    Abstract: A method for preparation of carbon nanotubes (CNTs) bundles for use in field emission devices (FEDs) includes forming a plurality of carbon nanotubes on a substrate, contacting the carbon nanotubes with a polymer composition comprising a polymer and a solvent, and removing at least a portion of the solvent so as to form a solid composition from the carbon nanotubes and the polymer to form a carbon nanotube bundle having a base with a periphery, and an elevated central region where, along the periphery of the base, the carbon nanotubes slope toward the central region.

    Abstract translation: 一种用于场致发射器件(FED)中用于制备碳纳米管(CNT)束的方法包括在基片上形成多个碳纳米管,使碳纳米管与包含聚合物和溶剂的聚合物组合物接触,并至少除去 溶剂的一部分,以便从碳纳米管和聚合物形成固体组合物以形成具有周边基体的碳纳米管束,以及升高的中心区域,沿着基底的周边,碳纳米管的斜面 朝中央地区。

    ELECTRON SOURCE AND ELECTRON BEAM APPARATUS
    9.
    发明申请
    ELECTRON SOURCE AND ELECTRON BEAM APPARATUS 有权
    电子源和电子束装置

    公开(公告)号:US20100237762A1

    公开(公告)日:2010-09-23

    申请号:US12680918

    申请日:2008-10-03

    Abstract: Provided is an electron source which outputs a stable electron beam even when vibration is applied from the external to an apparatus which uses the electron source. The electron source is provided with an insulator (5); two conductive terminals (4) arranged at an interval on the insulator (5); a long filament (3) stretched between the conductive terminals (4); and a needle-like cathode (1) having an electron emitting section attached to the filament (3). The vertical cross-section shape of the filament (3) in the axis direction has a long direction and a short direction, and the maximum length in the long direction is 1.5 times or more but not more than 5 times the maximum length in the short direction.

    Abstract translation: 提供了即使从外部向使用电子源的装置施加振动时也输出稳定的电子束的电子源。 电子源设有绝缘体(5); 在绝缘体(5)上间隔布置的两个导电端子(4); 在导电端子(4)之间延伸的长丝(3); 和具有连接到灯丝(3)上的电子发射部分的针状阴极(1)。 灯丝(3)在轴向上的垂直截面形状具有长方向和短方向,并且长度方向上的最大长度是短时间内的最大长度的1.5倍以上但不大于5倍 方向。

    Field emission device and method for making the same
    10.
    发明申请
    Field emission device and method for making the same 有权
    场发射装置及其制造方法

    公开(公告)号:US20070075619A1

    公开(公告)日:2007-04-05

    申请号:US11434382

    申请日:2006-05-15

    CPC classification number: H01J1/304 H01J9/025 Y10S977/842 Y10S977/882

    Abstract: A field emission device (10) includes a base (12), a conductive paste (16), and at least one carbon nanotube yarn (14). The at least one carbon nanotube yarn is attached to the base using the conductive paste. This avoids separation of the at least one carbon nanotube yarn from the base by electric field force in a strong electric field. A method for making the field emission device includes the steps of: (a) providing a base; (b) attaching at least one carbon nanotube yarn to the base using conductive paste; and (c) sintering the conductive paste to obtain the field emission device with the carbon nanotube yarn firmly attached to the base.

    Abstract translation: 场致发射器件(10)包括基底(12),导电糊(16)和至少一个碳纳米管纱(14)。 使用导电膏将至少一个碳纳米管纱线附接到基底。 这避免了在强电场中通过电场力将至少一种碳纳米管纱线与基体分离。 一种制造场致发射器件的方法包括以下步骤:(a)提供基极; (b)使用导电浆料将至少一根碳纳米管纱线附着到基底上; 和(c)烧结导电膏以获得具有牢固地附接到基底的碳纳米管丝的场发射装置。

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