Publication detail

Field emission properties of polymer graphite tips prepared by membrane electrochemical etching

KNÁPEK, A. DALLAEV, R. BURDA, D. SOBOLA, D. ALLAHAM, M. HORÁČEK, M. KASPAR, P. MATĚJKA, M. MOUSA, M.

Original Title

Field emission properties of polymer graphite tips prepared by membrane electrochemical etching

Type

journal article in Web of Science

Language

English

Original Abstract

This paper investigates field emission behavior from the surface of a tip that was prepared from polymer graphite nanocomposites subjected to electrochemical etching. The essence of the tip preparation is to create a membrane of etchant over an electrode metal ring. The graphite rod acts here as an anode and immerses into the membrane filled with alkali etchant. After the etching process, the tip is cleaned and analyzed by Raman spectroscopy, investigating the chemical composition of the tip. The topography information is obtained using the Scanning Electron Microscopy and by Field Emission Microscopy. The evaluation and characterization of field emission behavior is performed at ultra-high vacuum conditions using the Field Emission Microscopy where both the field electron emission pattern projected on the screen and current–voltage characteristics are recorded. The latter is an essential tool that is used both for the imaging of the tip surfaces by electrons that are emitted toward the screen, as well as a tool for measuring current–voltage characteristics that are the input to test field emission orthodoxy.

Keywords

polymer graphite tip, electrochemical etching, field emission microscopy

Authors

KNÁPEK, A.; DALLAEV, R.; BURDA, D.; SOBOLA, D.; ALLAHAM, M.; HORÁČEK, M.; KASPAR, P.; MATĚJKA, M.; MOUSA, M.

Released

1. 7. 2020

Publisher

MDPI

ISBN

2079-4991

Periodical

Nanomaterials

Year of study

10

Number

7

State

Swiss Confederation

Pages from

1

Pages to

12

Pages count

12

URL

https://www.mdpi.com/2079-4991/10/7/1294

Full text in the Digital Library

http://hdl.handle.net/11012/196661

BibTex

@article{BUT164395,
  author="Alexandr {Knápek} and Rashid {Dallaev} and Daniel {Burda} and Dinara {Sobola} and Mohammad Mahmoud {Allaham} and Miroslav {Horáček} and Pavel {Kaspar} and Milan {Matějka} and Marwan {Mousa}",
  title="Field emission properties of polymer graphite tips prepared by membrane electrochemical etching",
  journal="Nanomaterials",
  year="2020",
  volume="10",
  number="7",
  pages="1--12",
  doi="10.3390/nano10071294",
  issn="2079-4991",
  url="https://www.mdpi.com/2079-4991/10/7/1294"
}