Publication detail

Programmable set-up for electrochemical preparation of STM tips and ultra-sharp field emission cathodes

KNÁPEK, A. SÝKORA, J. CHLUMSKÁ, J. SOBOLA, D.

Original Title

Programmable set-up for electrochemical preparation of STM tips and ultra-sharp field emission cathodes

Type

journal article in Web of Science

Language

English

Original Abstract

This paper describes a newly designed set-upwhich is intended for automated preparation both for STMtips and for ultra-sharp field emission cathodes made of polycrystalline and single crystal tungsten in laboratory conditions. The newly designed set-up incorporates electrochemical etching of a wire in the surface layer of an electrolyte and also the so called drop-off method which consists of two steps and requires more precise wire and current setting. Additionally, the method was extended for polycrystalline wires of tungsten using a special cut-off algorithm, which dealswith variable etching speed for various crystallographic orientation of the current grain. Produced tips are examined using scanning low energy electron microscopy as for the surface and by the occurrence of electron field-emission as for the geometry based on the Fowler-Nordheim analysis. STM performance of the produced tip is discussed and examined as well.

Keywords

Field emission cathode, STM tip, electrochemical etching

Authors

KNÁPEK, A.; SÝKORA, J.; CHLUMSKÁ, J.; SOBOLA, D.

Released

1. 4. 2017

Publisher

ELSEVIER

ISBN

0167-9317

Periodical

MICROELECTRONIC ENGINEERING

Number

173

State

Kingdom of the Netherlands

Pages from

42

Pages to

47

Pages count

6

URL

https://www.sciencedirect.com/science/article/pii/S0167931717301302

BibTex

@article{BUT135121,
  author="Alexandr {Knápek} and Jiří {Sýkora} and Jana {Chlumská} and Dinara {Sobola}",
  title="Programmable set-up for electrochemical preparation of STM tips and ultra-sharp field emission cathodes",
  journal="MICROELECTRONIC ENGINEERING",
  year="2017",
  number="173",
  pages="42--47",
  doi="10.1016/j.mee.2017.04.002",
  issn="0167-9317",
  url="https://www.sciencedirect.com/science/article/pii/S0167931717301302"
}