公开(公告)号：US20240282542A1

公开(公告)日：2024-08-22

申请号：US18570222

申请日：2022-06-15

Applicant: The Board of Trustees of the Leland Stanford Junior University

Inventor： Evan R. Antoniuk ,  Bruce Dunham ,  Piero Pianetta ,  Theodore Vecchione ,  Evan J. Reed

IPC: H01J1/34 ,  G06F30/373 ,  G06F111/10 ,  G06F119/08 ,  G06F119/18 ,  H01J9/12

CPC classification number: H01J1/34 ,  G06F30/373 ,  H01J9/12 ,  G06F2111/10 ,  G06F2119/08 ,  G06F2119/18 ,  H01J2201/3423

Abstract: Among various examples, one is directed to identifying one or more particular photocathode semiconductor structures via a computer-based method. The method includes calculating, for each of a plurality of semiconductor materials and via a database characterizing electronic band structures of respective semiconductor materials corresponding to the plurality of semiconductor materials, an intrinsic emittance score (e.g., using an optimistic selection of a work function) as a predictive screening metric for whether the semiconductor material may exhibit low intrinsic emittance. A subset of the semiconductor materials may be selected, wherein each of the semiconductor materials in the subset satisfies screening criteria based on the intrinsic emittance score, and photocathode brightness properties of said one or more of the semiconductor materials in the subset are characterized, thereby identifying certain semiconductor materials in the subset of the semiconductor materials with desirable photocathode brightness properties.

公开(公告)号：US20240156101A1

公开(公告)日：2024-05-16

申请号：US18333891

申请日：2023-06-13

Applicant: Salveo, Inc.

Inventor： John Kenneth Bracewell, JR.

IPC: A01N59/16 ,  A01C1/06 ,  A01G7/06 ,  A01G25/02 ,  A01N25/12 ,  A01N37/02 ,  A01N43/16 ,  H01J1/34 ,  H01J37/06

CPC classification number: A01N59/16 ,  A01C1/06 ,  A01G7/06 ,  A01G25/023 ,  A01N25/12 ,  A01N37/02 ,  A01N43/16 ,  H01J1/34 ,  H01J37/06

Abstract: Provided herein are compositions, systems, and methods for treating plant, aquatic, and/or livestock pathogens. More specifically, the present disclosure relates to activated compositions having metal nanoparticles and/or one or more organic acids for the treatment of harmful plant, aquaculture, or livestock pathogens, and also relates to methods of making and using the compositions.

公开(公告)号：US20240120168A1

公开(公告)日：2024-04-11

申请号：US17768244

申请日：2019-10-31

Applicant: Hitachi High-Tech Corporation

Inventor： Takashi Ohshima ,  Hideo Morishita ,  Tatsuro Ide ,  Naohiro Kohmu ,  Momoyo Enyama ,  Yoichi Ose ,  Toshihide Agemura ,  Junichi Katane

IPC: H01J37/073 ,  H01J1/34 ,  H01J37/147 ,  H01J37/22 ,  H01J37/26 ,  H01J37/285

CPC classification number: H01J37/073 ,  H01J1/34 ,  H01J37/1474 ,  H01J37/22 ,  H01J37/265 ,  H01J37/285 ,  H01J2237/06333

Abstract: An electron beam emitted from a photoexcited electron gun is increased in luminance. An electron gun 15 includes: a photocathode 1 including a substrate 11 and a photoelectric film 10; a light source 7 that emits pulsed excitation light; a condenser lens 2 that focuses the pulsed excitation light toward the photocathode; and an extractor electrode 3 that faces the photocathode and that accelerates an electron beam generated from the photoelectric film by focusing the pulsed excitation light by the condenser lens, transmitting the pulsed excitation light through the substrate of the photocathode, and causing the pulsed excitation light to be incident on the photocathode. The pulsed excitation light is condensed at different timings at different positions on the photoelectric film of the photocathode.

公开(公告)号：US20220406558A1

公开(公告)日：2022-12-22

申请号：US17798092

申请日：2020-03-25

Applicant: Hitachi High-Tech Corporation

Inventor： Hideo MORISHITA ,  Takashi OHSHIMA ,  Tatsuro IDE ,  Naohiro KOHMU ,  Toshihide AGEMURA ,  Yoichi OSE ,  Junichi KATANE

IPC: H01J37/073 ,  H01J1/34

Abstract: The electron gun is provided with a first anode electrode and a second anode electrode to generate an acceleration and deceleration electric field. A lens electric field makes it possible to irradiate a sample with an electron beam emitted from a part outside an optical axis of the photoelectric film without being blocked by a differential exhaust diaphragm. A wide range of electron beams off-optical axis can be used even in a high-brightness photocathode that requires high vacuum. As a result, the photoelectric film and the electron gun can be extended in life, can be stabilized, and can be increased in brightness. Further, it is possible to facilitate a control of emitting electron beams from a plurality of positions on the photoelectric film, a timing control of emitting electron beams from a plurality of positions, a condition control of an electron beam in an electron microscope using electron beams.

公开(公告)号：US20210335566A1

公开(公告)日：2021-10-28

申请号：US17222582

申请日：2021-04-05

Applicant: ELBIT SYSTEMS OF AMERICA, LLC

Inventor： Arlynn Walter Smith

IPC: H01J1/34 ,  H01J9/233

Abstract: A night vision system along with an image intensifier tube and method for forming the tube are provided. The night vision system incorporates the image intensifier tube in both an analog channel as well as a digital channel, with an addressable display within the analog image intensifier tube analog channel configured to create an electronically addressable output. An analog image intensifier tube is included in the digital imager for presenting binary digital signals representative of an image, or of symbol indicia, and registering those digital representation from the digital imager onto one or more electron multipliers of the analog image intensifier tube within the analog channel. The provided night vision system also utilizes a cathodoluminescent screen, which is a highly efficient light source that reduces system power.

公开(公告)号：US10748730B2

公开(公告)日：2020-08-18

申请号：US15160505

申请日：2016-05-20

Applicant: KLA-Tencor Corporation

Inventor： Yung-Ho Alex Chuang ,  John Fielden ,  Yinying Xiao-Li ,  Xuefeng Liu

IPC: H01J1/308 ,  H01L31/105 ,  H01L31/107 ,  H01L27/148 ,  H01J1/304 ,  H01J1/34

Abstract: A photocathode utilizes an field emitter array (FEA) integrally formed on a silicon substrate to enhance photoelectron emissions, and a thin boron layer disposed directly on the output surface of the FEA to prevent oxidation. The field emitters are formed by protrusions having various shapes (e.g., pyramids or rounded whiskers) disposed in a two-dimensional periodic pattern, and may be configured to operate in a reverse bias mode. An optional gate layer is provided to control emission currents. An optional second boron layer is formed on the illuminated (top) surface, and an optional anti-reflective material layer is formed on the second boron layer. An optional external potential is generated between the opposing illuminated and output surfaces. An optional combination of n-type silicon field emitter and p-i-n photodiode film is formed by a special doping scheme and by applying an external potential. The photocathode forms part of sensor and inspection systems.

公开(公告)号：US20200090895A1

公开(公告)日：2020-03-19

申请号：US16259317

申请日：2019-01-28

Applicant: KLA-TENCOR CORPORATION

Inventor： Gildardo R. Delgado ,  Katerina Ioakeimidi ,  Frances Hill ,  Gary V. Lopez Lopez ,  Rudy F. Garcia

IPC: H01J1/34 ,  H01J37/28

Abstract: A photocathode structure, which can include one or more of Cs2Te, CsKTe, CsI, CsBr, GaAs, GaN, InSb, CsKSb, or a metal, has a protective film on an exterior surface. The protective film includes one or more of ruthenium, nickel, platinum, chromium, copper, gold, silver, aluminum, or an alloy thereof. The protective film can have a thickness from 1 nm to 10 nm. The photocathode structure can be used in an electron beam tool like a scanning electron microscope.

公开(公告)号：US20190164734A1

公开(公告)日：2019-05-30

申请号：US16321552

申请日：2017-08-03

Applicant: HAMAMATSU PHOTONICS K.K.

Inventor： Hiroshi KOBAYASHI ,  Ginji SUGIURA

IPC: H01J43/24 ,  H01J9/12 ,  H01J1/34

Abstract: An electron multiplier production method including a main body portion, and a channel provided in the main body portion to open at one end surface and the other end surface of the main body portion and emits secondary electrons includes a first step of preparing a main body member including the one end surface and the other end surface, a communicating hole for the channel through which the one end surface and the other end surface communicate being provided in the main body member, a second step of forming the channel by forming a deposition layer including at least a resistive layer on an outer surface of the main body member and an inner surface of the communicating hole using an atomic layer deposition method, and a third step of forming the main body portion by removing the deposition layer formed on the outer surface of the main body member.

公开(公告)号：US20190108963A1

公开(公告)日：2019-04-11

申请号：US16153103

申请日：2018-10-05

Applicant: KLA-TENCOR CORPORATION

Inventor： Frances Hill ,  Gildardo R. Delgado ,  Rudy F. Garcia ,  Michael E. Romero ,  Katerina Ioakeimidi

IPC: H01J1/304 ,  H01J1/34

Abstract: Electron source designs are disclosed. The emitter structure, which may be silicon, has a layer on it. The layer may be graphene or a photoemissive material, such as an alkali halide. An additional layer between the emitter structure and the layer or a protective layer on the layer can be included. Methods of operation and methods of manufacturing also are disclosed.

公开(公告)号：US09960004B2

公开(公告)日：2018-05-01

申请号：US14433403

申请日：2012-10-12

Applicant: Photonis France

Inventor： Gert Nützel ,  Pascal Lavoute

IPC: H01J40/06 ,  H01J1/34 ,  H01J40/16 ,  H01J43/02

CPC classification number: H01J1/34 ,  H01J40/06 ,  H01J40/16 ,  H01J43/02

Abstract: The invention relates to a semi-transparent photocathode (1) for a photon detector having an increased absorption rate for a preserved transport rate. According to the invention, the photocathode (1) includes a transmission diffraction grating (30) able to diffract said photons and provided in the support layer (10) on which the photoemissive layer (20) is deposited.