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Preparing a Celadonite Electron Source and Estimating Its Brightness

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Published on: November 5, 2019

Low-threshold field emission from carbon nano-clusters.

A Yafyasov¹, V Bogevolnov, G Fursey

¹Department of Physics of St. Petersburg University, Russian Federation.

Ultramicroscopy

|February 5, 2011

Summary

Detonation carbon materials exhibit low-threshold field emission (LTFE) due to unique nanostructures. A new resonance transmission model explains this phenomenon, offering an alternative to existing theories.

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Area of Science:

Materials Science
Condensed Matter Physics
Nanotechnology

Background:

Detonation carbon materials (DCM) possess non-equilibrium nanostructures.
DCM exhibit reproducible low-threshold field emission (LTFE).
Previous work described DCM with ultra-relativistic dispersion and size-quantization effects.

Purpose of the Study:

To link the LTFE phenomenon in DCM to the nature of electron wave functions.
To propose a new model for LTFE in DCM.
To provide an alternative explanation to established field emission models.

Main Methods:

Field effect measurements on electrolytes using DCM.
Analysis of experimental results from field emission in strong electric fields.
Theoretical modeling based on wave function properties and experimental data.

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Main Results:

A correlation between LTFE and the wave functions of electrons in DCM was established.
A novel resonance transmission model for LTFE was proposed.
The new model offers an alternative to field-enhancement and barrier-lowering mechanisms.

Conclusions:

The LTFE phenomenon in DCM can be explained by a resonance transmission model.
This model is based on the unique electronic properties of DCM, including small effective electron mass and size-quantization.
The findings advance the understanding of field emission in advanced carbon nanomaterials.