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公开(公告)号：US20180211806A1
公开(公告)日：2018-07-26
申请号：US15697272
申请日：2017-09-06
发明人： Jin-Woo JEONG , Yoon-Ho SONG
摘要： Provided is an electron emission source including a substrate, a fixed structure provided on the substrate, and an electron emission yarn provided between the substrate and the fixed structure. The fixed structure includes a first portion having a first width and a second portion having a second width greater than the first width, and the electron emission yarn extends on a first sidewall of the first portion of the fixed structure from between the fixed structure and the substrate.
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公开(公告)号：US09966216B2
公开(公告)日：2018-05-08
申请号：US14356361
申请日：2012-11-05
申请人： Princeton University
发明人： Stephen Y. Chou
CPC分类号： H01J1/3042 , H01J9/025 , H01L33/38 , H01L51/0036 , H01L51/4253 , H01L51/442 , H01L51/5209 , H01L2933/0016 , H01L2933/0083 , Y02E10/549 , Y02P70/521
摘要： A new ultra-thin high-efficiency photoelectron source utilizing a metallic photonic resonant cavity having a photonic resonant cavity with a top metallic layer with a plurality of openings, each having an average dimension less than the wavelength of the excitation photons in vacuum, a bottom metallic layer and a photoelectron emission layer of semiconductor positioned between the top metallic layer and the bottom metallic.
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公开(公告)号：US09960003B2
公开(公告)日：2018-05-01
申请号：US15544854
申请日：2016-01-18
发明人： Andreas Geisler , Svetlana Goβmann , Oliver Heid
摘要： An apparatus is provided for generating X-ray radiation in an outer magnetic field, which may be generated by a magnetic field device. The apparatus includes a cathode configured to generate an electron beam and an anode configured to retard the electrons of the electron beam and generate an X-ray beam. The apparatus further includes a device configured to generate an electric field orientated from the anode in the direction of the cathode and substantially collinear to the outer magnetic field, wherein the cathode, as an electron emitter, includes a cold cathode that passively provides free electrons by field emission.
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公开(公告)号：US09837237B2
公开(公告)日：2017-12-05
申请号：US15608761
申请日：2017-05-30
摘要： Embodiments related to the use and production of porous carbon materials in ion emitters and other applications are described.
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公开(公告)号：US09805900B1
公开(公告)日：2017-10-31
申请号：US15145955
申请日：2016-05-04
发明人： David Glen Findley
CPC分类号： H01J1/3042 , B05D1/005 , B05D2203/30 , H01J1/3046 , H01J1/3048 , H01J1/48 , H01J9/025 , H01J21/105 , H01J2201/30469
摘要： In an embodiment, a method includes forming a first diamond layer on a substrate and inducing a layer of graphene from the first diamond layer by heating the substrate and the first diamond layer. The method includes forming a second diamond layer on top of the layer of graphene and applying a mask to the second diamond layer. The mask includes a shape of a cathode, an anode, and one or more grids. The method further includes forming a two-dimensional cold cathode, a two-dimensional anode, and one or more two-dimensional grids by reactive-ion electron-beam etching. Each of the two-dimensional cold cathode, the two-dimensional anode, and the one or more two-dimensional grids includes a portion of the first diamond layer, the graphene layer, and the second diamond layer such that the graphene layer is positioned between the first diamond layer and the second diamond layer.
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公开(公告)号：US09793083B2
公开(公告)日：2017-10-17
申请号：US15396701
申请日：2017-01-02
申请人： Elwha LLC
CPC分类号： H01J19/24 , H01J1/304 , H01J1/3046 , H01J1/308 , H01J9/025 , H01J9/18 , H01J2209/0223
摘要： A horizontal multilayer junction-edge field emitter includes a plurality of vertically-stacked multilayer structures separated by isolation layers. Each multilayer structure is configured to produce a 2-dimensional electron gas at a junction between two layers within the structure. The emitter also includes an exposed surface intersecting the 2-dimensional electron gas of each of the plurality of vertically-stacked multilayer structures to form a plurality of effectively one-dimensional horizontal line sources of electron emission.
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公开(公告)号：US09771266B2
公开(公告)日：2017-09-26
申请号：US14745665
申请日：2015-06-22
发明人： Takashi Matsumoto , Osayuki Akiyama
IPC分类号： B44C1/22 , C03C15/00 , C03C25/68 , C23F1/00 , C01B31/02 , B82Y40/00 , H01J9/02 , C01B31/08 , B82Y30/00
CPC分类号： C01B32/168 , B82Y30/00 , B82Y40/00 , C01B32/16 , C01B32/176 , H01J9/025
摘要： A method for processing carbon nanotubes includes positioning in a treatment chamber of a carbon nanotube processing apparatus a substrate having multiple carbon nanotubes bundled together and oriented substantially perpendicular to a surface of the substrate, and introducing a microwave into the treatment chamber from a planar antenna having multiple microwave radiation holes such that plasma of an etching gas is generated and that the plasma etches the carbon nanotubes starting from one end of the carbon nanotubes bundled together.
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公开(公告)号：US20170263408A1
公开(公告)日：2017-09-14
申请号：US15608761
申请日：2017-05-30
摘要： Embodiments related to the use and production of porous carbon materials in ion emitters and other applications are described
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公开(公告)号：US09663369B2
公开(公告)日：2017-05-30
申请号：US13329184
申请日：2011-12-16
CPC分类号： H01J9/025 , B82Y30/00 , B82Y40/00 , C01B32/168 , H01J1/304 , H01J2201/30453 , H01J2201/30469
摘要： A process comprises combining a Ce (IV) salt dissolved in a solvent comprising water with a carbon material comprising CNT or graphene wherein the Ce (IV) salt is selected from a Ce (IV) ammonium salt of a nitrogen oxide acid, Ce (IV) ammonium salt of a sulfur oxide acid, Ce (IV) salt of a lower alkyl organo sulfur acid, or Ce (IV) salt of a lower alkane organo sulfur acid. In one embodiment the Ce (IV) salt is selected from Ce (IV) ammonium nitrate, Ce (IV) ammonium sulfate, Ce (IV) lower alkyllsulfonate, or Ce (IV) trifluoro lower alkanesulfonate. A product is produced by this process. An article of manufacture comprises this product on a substrate.
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公开(公告)号：US09659733B2
公开(公告)日：2017-05-23
申请号：US14740359
申请日：2015-06-16
申请人： Tsinghua University
发明人： Huaqiang Wu , Shuoguo Yuan , Han Li , He Qian
IPC分类号： C23C16/30 , H01J1/304 , H01J9/02 , C23C16/448 , C23C16/455
CPC分类号： H01J1/304 , C23C16/305 , C23C16/4488 , C23C16/45523 , H01J9/025 , H01J2201/30449
摘要： Method for preparing a molybdenum disulfide film used in a field emission device, including: providing a sulfur vapor; blowing the sulfur vapor into a reaction chamber having a substrate and MoO3 powder to generate a gaseous MoOx; feeding the sulfur vapor into the reaction chamber sequentially, heating the reaction chamber to a predetermined reaction temperature and maintaining for a predetermined reaction time, and then cooling the reaction chamber to a room temperature and maintaining for a second reaction time to form a molybdenum disulfide film on the surface of the substrate, in which the molybdenum disulfide film grows horizontally and then grows vertically. The method according to the present disclosure is simple and easy, and the field emission property of the MoS2 film obtained is good.
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