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:
-
- Berkeley, CA
- Issue Date:
- Research Org.:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- OSTI Identifier:
- 872237
- Patent Number(s):
- 5891321
- Assignee:
- Regents of University of California (Oakland, CA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C25 - ELECTROLYTIC OR ELECTROPHORETIC PROCESSES C25F - PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS
H - ELECTRICITY H01 - BASIC ELECTRIC ELEMENTS H01J - ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- 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 = {Fri Jan 01 00:00:00 EST 1999},
month = {Fri Jan 01 00:00:00 EST 1999}
}
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