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PEKÁREK, J. VRBA, R. MAGÁT, M. CHOMOUCKÁ, J. MAJZLÍKOVÁ, P. DRBOHLAVOVÁ, J. HRDÝ, R. PRÁŠEK, J.
Original Title
Experimental study of emission properties of carbon nanotubes
Type
conference paper
Language
English
Original Abstract
This paper describes a new approach to study the emission properties of carbon nanotubes in low distances between two electrodes. Each electrode consists of high doped silicon substrate. The field emission works on the principle that the field emission current is correlated with the electrical field intensity, i.e. the anode-emitter distance when the applied voltage is fixed. This means that the CNTs array serves as the emitter source of electrons between the cathode and the anode in the electric field. The measurement of emission current density flowing through the electrodes is carried out in a vacuum iron-glass vessel pumped by a turbomolecular pump and equipped with feedthroughs for voltage application and current measurement. The vacuum vessel is equipped with a new vacuum compatible linear nano-motion drive SmarAct that enables precise changes of the distance between two electrodes inside the vacuum chamber (step width from 50 nm to 1000 nm, sub-nanometer resolution). Special software, enabling to set up the step size, number of the steps and speed of the motion, is developed for its control. Additionally, a measurement control unit and the software are prepared for an automatic electrical measurement. For this experiment, carbon nanotubes (CNTs) are deposited using a microwave (mw) torch at atmospheric pressure or using a thermal chemical vapour deposition.
Keywords
Emission properties, carbon nanotubes, thermal chemical vapour deposition, deposition using a microwave torch
Authors
PEKÁREK, J.; VRBA, R.; MAGÁT, M.; CHOMOUCKÁ, J.; MAJZLÍKOVÁ, P.; DRBOHLAVOVÁ, J.; HRDÝ, R.; PRÁŠEK, J.
RIV year
2012
Released
23. 10. 2012
Publisher
TANGER Ltd.
Location
Ostrava
ISBN
978-80-87294-35-2
Book
NANOCON 2012 - Conference Proceedings
Edition
1.
Pages from
126
Pages to
130
Pages count
5
BibTex
@inproceedings{BUT94843, author="Jan {Pekárek} and Radimír {Vrba} and Martin {Magát} and Jana {Pekárková} and Petra {Majzlíková} and Jana {Drbohlavová} and Radim {Hrdý} and Jan {Prášek}", title="Experimental study of emission properties of carbon nanotubes", booktitle="NANOCON 2012 - Conference Proceedings", year="2012", series="1.", pages="126--130", publisher="TANGER Ltd.", address="Ostrava", isbn="978-80-87294-35-2" }