GB921016A - Method of manufacturing field emission cathodes - Google Patents

Method of manufacturing field emission cathodes

Info

Publication number
GB921016A
GB921016A GB2416459A GB2416459A GB921016A GB 921016 A GB921016 A GB 921016A GB 2416459 A GB2416459 A GB 2416459A GB 2416459 A GB2416459 A GB 2416459A GB 921016 A GB921016 A GB 921016A
Authority
GB
United Kingdom
Prior art keywords
wires
bunch
july
holder
sodium nitrite
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB2416459A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB921016A publication Critical patent/GB921016A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
    • H01J9/025—Manufacture of electrodes or electrode systems of cold cathodes of field emission cathodes

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

921,016. Making cathodes. PHILIPS ELECTRICAL INDUSTRIES Ltd. July 14, 1959 [July 17, 1958], No. 24164/59. Drawings to Specification. Class 83 (2). [Also in Group XL (a)] A cathode is made from a number of thin tungsten wires coated with a tungsten-bronze alloy by forming them into a bunch and fixing one end of the bunch into a holder by arc welding. The coating is then removed from the portions of the wires projecting outside the holder and the free ends of the wire are dipped into a bath of sodium nitrite which rises between the wires by capillary action; the etching process being accelerated by the local application of heat. The etching serves to produce a fine point on the end of each of the wires and these are then washed clean of the sodium nitrite.
GB2416459A 1958-07-17 1959-07-14 Method of manufacturing field emission cathodes Expired GB921016A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL229696 1958-07-17

Publications (1)

Publication Number Publication Date
GB921016A true GB921016A (en) 1963-03-13

Family

ID=19751284

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2416459A Expired GB921016A (en) 1958-07-17 1959-07-14 Method of manufacturing field emission cathodes

Country Status (5)

Country Link
DE (1) DE1090337B (en)
ES (1) ES250789A1 (en)
FR (1) FR1230237A (en)
GB (1) GB921016A (en)
NL (1) NL108183C (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7928338B2 (en) 2007-02-02 2011-04-19 Plasma Surgical Investments Ltd. Plasma spraying device and method
US8030849B2 (en) 2007-08-06 2011-10-04 Plasma Surgical Investments Limited Pulsed plasma device and method for generating pulsed plasma
US8105325B2 (en) 2005-07-08 2012-01-31 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device, use of a plasma-generating device and method of generating a plasma
US8109928B2 (en) 2005-07-08 2012-02-07 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device and use of plasma surgical device
US8735766B2 (en) 2007-08-06 2014-05-27 Plasma Surgical Investments Limited Cathode assembly and method for pulsed plasma generation
US9913358B2 (en) 2005-07-08 2018-03-06 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device and use of a plasma surgical device
US10463418B2 (en) 2010-07-22 2019-11-05 Plasma Surgical Investments Limited Volumetrically oscillating plasma flows
CN110777424A (en) * 2019-11-14 2020-02-11 南京工业职业技术学院 Nano needle tip batch production device and preparation method
US11882643B2 (en) 2020-08-28 2024-01-23 Plasma Surgical, Inc. Systems, methods, and devices for generating predominantly radially expanded plasma flow

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3173006A (en) * 1962-10-22 1965-03-09 Field Emission Corp Short pulse-high energy electron radiation tube

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE395823C (en) * 1924-05-23 Julius Edgar Lilienfeld Dr Device for generating X-rays
AT95299B (en) * 1922-01-14 1923-12-10 C H F Mueller Fa Device for triggering cathode rays.
DE689830C (en) * 1937-05-15 1940-04-04 Siemens & Halske Akt Ges Process for improving the emission properties of cold tip cathodes

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9913358B2 (en) 2005-07-08 2018-03-06 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device and use of a plasma surgical device
US10201067B2 (en) 2005-07-08 2019-02-05 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device and use of a plasma surgical device
US8105325B2 (en) 2005-07-08 2012-01-31 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device, use of a plasma-generating device and method of generating a plasma
US8109928B2 (en) 2005-07-08 2012-02-07 Plasma Surgical Investments Limited Plasma-generating device, plasma surgical device and use of plasma surgical device
US8337494B2 (en) 2005-07-08 2012-12-25 Plasma Surgical Investments Limited Plasma-generating device having a plasma chamber
US8465487B2 (en) 2005-07-08 2013-06-18 Plasma Surgical Investments Limited Plasma-generating device having a throttling portion
US7928338B2 (en) 2007-02-02 2011-04-19 Plasma Surgical Investments Ltd. Plasma spraying device and method
US8735766B2 (en) 2007-08-06 2014-05-27 Plasma Surgical Investments Limited Cathode assembly and method for pulsed plasma generation
US8030849B2 (en) 2007-08-06 2011-10-04 Plasma Surgical Investments Limited Pulsed plasma device and method for generating pulsed plasma
US10463418B2 (en) 2010-07-22 2019-11-05 Plasma Surgical Investments Limited Volumetrically oscillating plasma flows
US10492845B2 (en) 2010-07-22 2019-12-03 Plasma Surgical Investments Limited Volumetrically oscillating plasma flows
US10631911B2 (en) 2010-07-22 2020-04-28 Plasma Surgical Investments Limited Volumetrically oscillating plasma flows
CN110777424A (en) * 2019-11-14 2020-02-11 南京工业职业技术学院 Nano needle tip batch production device and preparation method
CN110777424B (en) * 2019-11-14 2023-07-18 南京工业职业技术学院 Nanometer needle tip batch production device and preparation method
US11882643B2 (en) 2020-08-28 2024-01-23 Plasma Surgical, Inc. Systems, methods, and devices for generating predominantly radially expanded plasma flow

Also Published As

Publication number Publication date
NL108183C (en)
DE1090337B (en) 1960-10-06
ES250789A1 (en) 1960-03-01
FR1230237A (en) 1960-09-14

Similar Documents

Publication Publication Date Title
US2303166A (en) Electron discharge device
GB921016A (en) Method of manufacturing field emission cathodes
GB1438995A (en) Corona discharge electrode
GB786281A (en) Improvements in or relating to methods of manufacturing semiconductor systems
US2822302A (en) Non-emissive electrode
US3748729A (en) Traveling wave tube interaction circuit manufacture
GB1057909A (en) Method of manufacturing cathodes for electron tubes
GB569048A (en) Improvements in and relating to the manufacture of spiral vacuum tube filaments
GB763049A (en) Improvements in or relating to cathode heater elements and methods of making such elements
US2367314A (en) Electrolytic method of coating localized areas of articles
US2538588A (en) Photocell
US2589521A (en) Heater
GB833432A (en) Improvements in or relating to indirectly heated cathodes for electron discharge devices and to heater elements therefor
ES462612A1 (en) Field emission electron source
GB729611A (en) Improvements in or relating to electron discharge devices
GB766881A (en) Improvements relating to cathodes for high power valves
GB350938A (en) Improvements in vacuum electric tube devices
GB698853A (en) Improvements in electric discharge tubes
GB764160A (en) Wire electrode for electric vapour and/or gaseous discharge lamp
GB915812A (en) Improvements in electron-guns
GB839504A (en) Improvements relating to the production of thermionic electrodes
GB978786A (en) Improvements in electron tubes
GB582602A (en) Improvements in or relating to the connection of wires, tapes or other metal parts particularly for use in the manufacture of grids for electron discharge devices
JPS55166845A (en) Manufacturing method of cathode structure for magnetron
GB519854A (en) Improvements in and relating to vacuum electric discharge devices