公开(公告)号：US20080185951A1

公开(公告)日：2008-08-07

申请号：US11702919

申请日：2007-02-06

Applicant: Deeder Aurongzeb

Inventor： Deeder Aurongzeb

IPC: H01J1/146 ,  H01J9/04

CPC classification number: H01J61/0732 ,  H01J9/042 ,  H01J61/526 ,  H01K1/14 ,  H01K3/02

Abstract: The invention relates to an electrode having a nano-hollow array on the surface thereof, the nano-hollow array comprising a plurality of nano-pores or nano-balls, each pore having a diameter of less than 500 nm, formed by a process comprising depositing a uniform metal film on the electrode structure surface at a rate of 2 Å per second or less, annealing the metal film under rapid anneal conditions at a temperature within about 100 degrees of the melting point of the metal film and without subjecting the metal film to a temperature ramp-up to create metal droplets, and anodizing and over-anodizing the metal droplets in the presence of an anodization agent for the metal at from 20 to 200 volts at 0.1 to 2 amps to create nano-pores in the metal droplets or nano-balls to, creating increased surface area and increased electric field around the electrode which enhances speed of fill gas ionization.

Abstract translation: 本发明涉及一种在其表面上具有纳米中空阵列的电极，所述纳米中空阵列包括多个纳米孔或纳米球，每个孔具有小于500nm的直径，其形成方法包括 以每秒2埃的速度在电极结构表面上沉积均匀的金属膜，在金属膜的熔点约100度的温度下在快速退火条件下退火金属膜， 到达温度上升以产生金属液滴，以及在0.1至2安培处的20至200伏特的金属阳极氧化剂存在下阳极氧化和过度阳极化金属液滴以在金属液滴中产生纳米孔 或纳米球，从而在电极周围产生增加的表面积和增加的电场，这增强了填充气体电离的速度。

公开(公告)号：US20050179024A1

公开(公告)日：2005-08-18

申请号：US11102628

申请日：2005-04-11

Applicant: Motoshi Shibata ,  Masahiro Deguchi ,  Akira Taomoto ,  Toyokazu Ozaki

Inventor： Motoshi Shibata ,  Masahiro Deguchi ,  Akira Taomoto ,  Toyokazu Ozaki

IPC: H01J1/13 ,  H01J1/146 ,  H01L29/06

CPC classification number: H01J1/13 ,  H01J1/146

Abstract: Provided are an electron emission material having a reduced work function, and an electron emission element that has lower power consumption and/or high current density and exhibits excellent electron emission performance. An electron emission material includes a semiconductor substrate having atomic steps on a surface thereof and a flat region between two of the atomic steps adjacent to each other, and an adsorbed layer arranged in the flat region. The adsorbed layer contains at least one element selected from an alkali metal element, an alkaline-earth metal element, and Sc.

Abstract translation: 提供具有降低的功函数的电子发射材料和具有较低功耗和/或高电流密度并且表现出优异的电子发射性能的电子发射元件。 电子发射材料包括其表面上具有原子台阶的半导体衬底和彼此相邻的两个原子台阶之间的平坦区域和布置在平坦区域中的吸附层。 吸附层含有选自碱金属元素，碱土金属元素和Sc中的至少一种元素。

公开(公告)号：US06882094B2

公开(公告)日：2005-04-19

申请号：US09784910

申请日：2001-02-16

Applicant: Steven Dimitrijevic ,  James C. Withers ,  Raouf O. Loutfy

Inventor： Steven Dimitrijevic ,  James C. Withers ,  Raouf O. Loutfy

IPC: B82B1/00 ,  C01B31/02 ,  H01J1/304 ,  H01J9/02 ,  H01J29/04 ,  H01J31/12 ,  H01J1/14 ,  H01J1/146 ,  H01J9/00 ,  H01J9/04 ,  H01J19/06

CPC classification number: B82Y10/00 ,  H01J1/304 ,  H01J1/3044 ,  H01J9/025 ,  H01J2201/30457 ,  H01J2201/30469 ,  Y10S977/745 ,  Y10S977/939

Abstract: The present invention is directed to a nanotube coated with diamond or diamond-like carbon, a field emitter cathode comprising same, and a field emitter comprising the cathode. It is also directed to a method of preventing the evaporation of carbon from a field emitter comprising a cathode comprised of nanotubes by coating the nanotube with diamond or diamond-like carbon. In another aspect, the present invention is directed to a method of preventing the evaporation of carbon from an electron field emitter comprising a cathode comprised of nanotubes, which method comprises coating the nanotubes with diamond or diamond-like carbon.

Abstract translation: 本发明涉及涂覆有金刚石或类金刚石碳的纳米管，包含该金刚石或类金刚石碳的场致发射极阴极以及包括阴极的场致发射体。 还涉及一种通过用金刚石或类金刚石碳涂覆纳米管来防止来自包括由纳米管组成的阴极的场发射体蒸发碳的方法。 另一方面，本发明涉及一种防止碳从包含由纳米管构成的阴极的电子发射体蒸发的方法，该方法包括用金刚石或类金刚石碳涂覆纳米管。

公开(公告)号：US2144250A

公开(公告)日：1939-01-17

申请号：US4371435

申请日：1935-10-05

Applicant: RCA CORP

Inventor： ALLEN VICTOR O ,  JOSEPH JOHNSON

IPC: H01J1/146

CPC classification number: H01J1/146 ,  Y10S428/929 ,  Y10S428/935 ,  Y10T428/12833

公开(公告)号：US2144249A

公开(公告)日：1939-01-17

申请号：US785335

申请日：1935-02-23

Applicant: RCA CORP

Inventor： ALLEN VICTOR O

IPC: H01J1/146

CPC classification number: H01J1/146 ,  Y10S428/935 ,  Y10T428/12611 ,  Y10T428/12618 ,  Y10T428/12667 ,  Y10T428/12812

公开(公告)号：US20220336179A1

公开(公告)日：2022-10-20

申请号：US17639277

申请日：2020-08-28

Applicant: KOBELCO RESEARCH INSTITUTE, INC.

Inventor： Kenji KOGA ,  Toshiaki TAKAGI ,  Fumiaki KUDO ,  Tatsuhiko KUSAMICHI

IPC: H01J1/146 ,  H01J1/304 ,  H01J1/34 ,  H01J9/02 ,  H01J9/04 ,  H01J9/12 ,  C22C5/04 ,  B22F9/04 ,  B22F3/10 ,  C30B29/52

Abstract: The cathode member for electron beam generation of the present disclosure includes: 95% by area or more of a single phase or two phases of a compound composed of iridium and cerium. A total content of one or more subcomponents of metallic iridium and an oxide of one or more elements of iridium and cerium is 5% by area or less of the cathode member.

公开(公告)号：US20220328274A1

公开(公告)日：2022-10-13

申请号：US17221170

申请日：2021-04-02

Applicant: California Institute of Technology

Inventor： Pedro P. GUERRERO VELA ,  James E. POLK

IPC: H01J1/146 ,  H01J1/02 ,  H01J9/04 ,  C04B41/00 ,  C04B41/91

Abstract: Aspects include a method for treating a polycrystalline material, the method comprising: exposing a surface of the polycrystalline material to a plasma thereby changing the surface of the polycrystalline material from being characterized by a starting condition to being characterized by a treated condition; wherein: the surface comprises a plurality of crystallites each having the composition MB6, M being a metal element; the plasma comprises ions, the ions being characterized by an average ion flux selected from the range of 1.5 to 100 A/cm2 and an average ion energy that is less than a sputtering threshold energy; the starting condition of the surface is characterized by a first average work function and the treated condition of the surface is characterized by a second average work function; and the second average work function is less than the first average work function.

公开(公告)号：US10727021B2

公开(公告)日：2020-07-28

申请号：US16316026

申请日：2017-07-14

Applicant: SHARP KABUSHIKI KAISHA

Inventor： Katsumi Adachi ,  Hiroyuki Hirakawa ,  Tadashi Iwamatsu

IPC: H01J1/312 ,  H01J1/304 ,  H01J1/146 ,  H01J1/144 ,  H01J9/02 ,  H01J29/04

Abstract: An electron emission element (20) includes a first electrode (30a) and a second electrode (40) which are arranged facing each other, an intermediate layer (50) that is provided between the first electrode (30a) and the second electrode (40), and an insulating layer (60) that is formed with a thickness d1 on a substrate (30). A level difference between the insulating layer (60) and the first electrode (30a) is smaller than the thickness d1 of the insulating layer (60).

公开(公告)号：US10026582B2

公开(公告)日：2018-07-17

申请号：US15371511

申请日：2016-12-07

Applicant: HORIBA STEC, CO., LTD.

Inventor： Kohei Sasai ,  Toshihiro Ikeyama ,  Toshiaki Sakai

IPC: H01J9/04 ,  H01J1/14 ,  H01J1/146 ,  H01J49/42

Abstract: In order to provide a thermionic emission filament capable of ensuring a long life and improving an analysis accuracy of a mass spectrometer using the thermionic emission filament, in the thermionic emission filament including a core member through which electric current flows and an electron emitting layer which is formed so as to cover a surface of the core member, the electron emitting layer is configured to have denseness for substantial gas-tight integrity.

公开(公告)号：US20170358419A1

公开(公告)日：2017-12-14

申请号：US15665659

申请日：2017-08-01

Applicant: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

Inventor： Neville C. Luhmann, JR. ,  Gordon Soekland ,  Diana Gamzina ,  Na Li

IPC: H01J1/146 ,  C04B35/50 ,  C01G41/00 ,  C04B35/626 ,  C04B35/64 ,  C04B35/624 ,  H01J9/04

Abstract: Methods for fabricating refractory metal scandate nanocomposite powders with homogeneous microstructured refractory metal grains and a uniform nanosized dispersion of scandia are provided. The powders prepared by the sol-gel methods have a spherical morphology, a narrow distribution of particle sizes and a very uniform dispersion of nanosized scandia particles joined to the tungsten grains. The powder particle sizes can range from nanometers to micrometers. The powders can be pressed into porous cathode structures that can be impregnated with emissive materials to produce high current density and long life cathodes for high-power terahertz vacuum electron devices. The sol-gel fabrication methods allow control over the materials, particle size, particle composition and pore size and distribution of the cathode structure by manipulation of the process parameters.