Effect of Electron Irradiation on WS2 Nanotube Devices
Author Information
Author(s): Kovařík Martin, Citterberg Daniel, Paiva de Araújo Estácio, Šikola Tomáš, Kolíbal Miroslav
Primary Institution: CEITEC, Brno University of Technology
Hypothesis
How does electron beam exposure affect the electrical properties of WS2 nanotubes?
Conclusion
Electron beam exposure significantly increases the resistance of WS2 nanotubes, and this change is generally irreversible.
Supporting Evidence
- Resistance of WS2 nanotubes increased by a factor of 2 to 14 after electron beam exposure.
- Changes in resistance were irreversible even after hours to days under ambient conditions.
- Substrate charging was identified as the primary cause of resistance changes in the nanotubes.
Takeaway
When we shine a special beam on tiny tubes made of WS2, they become harder to pass electricity through, and this change doesn't go back to normal even after a long time.
Methodology
The study involved in-operando transport measurements of WS2 nanotubes in a field effect transistor configuration while exposed to an electron beam inside a scanning electron microscope.
Limitations
The study primarily focuses on substrate-supported nanotubes, and the effects on suspended nanotubes were not as pronounced.
Digital Object Identifier (DOI)
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