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Title: Electrochemical sharpening of field emission tips

Abstract

A method for sharpening field emitter tips by electroetching/polishing. In gated field emitters, it is very important to initiate electron emission at the lowest possible voltage and thus the composition of the emitter and the gate, as well as the emitter-gate structure, are important factors. This method of sharpening the emitter tips uses the grid as a counter electrode in electroetching of the emitters, which can produce extremely sharp emitter tips as well as remove asperities and other imperfections in the emitters, each in relation to the specific grid hole in which it resides. This has the effect of making emission more uniform among the emitters as well as lowering the turn-on voltage.

Inventors:
 [1]
  1. (Berkeley, CA)
Issue Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
OSTI Identifier:
872237
Patent Number(s):
5891321
Assignee:
Regents of University of California (Oakland, CA) LLNL
DOE Contract Number:  
W-7405-ENG-48
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
electrochemical; sharpening; field; emission; tips; method; emitter; electroetching; polishing; gated; emitters; initiate; electron; lowest; voltage; composition; gate; emitter-gate; structure; factors; grid; counter; electrode; produce; extremely; sharp; remove; asperities; imperfections; relation; specific; resides; effect; uniform; lowering; turn-on; electron emission; field emission; counter electrode; field emitter; field emitters; emitter tips; initiate electron; turn-on voltage; emission tips; gated field; /205/445/

Citation Formats

Bernhardt, Anthony F. Electrochemical sharpening of field emission tips. United States: N. p., 1999. Web.
Bernhardt, Anthony F. Electrochemical sharpening of field emission tips. United States.
Bernhardt, Anthony F. Fri . "Electrochemical sharpening of field emission tips". United States. https://www.osti.gov/servlets/purl/872237.
@article{osti_872237,
title = {Electrochemical sharpening of field emission tips},
author = {Bernhardt, Anthony F.},
abstractNote = {A method for sharpening field emitter tips by electroetching/polishing. In gated field emitters, it is very important to initiate electron emission at the lowest possible voltage and thus the composition of the emitter and the gate, as well as the emitter-gate structure, are important factors. This method of sharpening the emitter tips uses the grid as a counter electrode in electroetching of the emitters, which can produce extremely sharp emitter tips as well as remove asperities and other imperfections in the emitters, each in relation to the specific grid hole in which it resides. This has the effect of making emission more uniform among the emitters as well as lowering the turn-on voltage.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

Patent:

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