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Fabrication of Low Temperature Carbon Nanotube Vertical Interconnects Compatible with Semiconductor Technology
Published on: December 7, 2015
Controlling atomic joints between carbon nanotubes by electric current
Atsuko Nagataki1, Takazumi Kawai, Yoshiyuki Miyamoto
1Department of Mechanical Engineering, Graduate School of Engineering, Osaka University, 2-1 Yamadaoka, Suita, Osaka 565-0871, Japan.
Physical Review Letters
|June 13, 2009
Summary
We explored carbon nanotube (CNT) coalescence using electric current, revealing distinct forces linked to specific atomic bonds. This demonstrates precise control over CNT junctions by adjusting electrical current.
Area of Science:
- Materials Science
- Nanotechnology
- Condensed Matter Physics
Background:
- Carbon nanotubes (CNTs) are crucial nanomaterials with unique electronic and mechanical properties.
- Understanding atomic-level interactions during CNT assembly is vital for advanced applications.
Purpose of the Study:
- To investigate the initial head-to-head coalescence of two capped CNTs.
- To characterize the forces involved in forming CNT junctions.
- To explore the role of electrical current in controlling CNT assembly.
Main Methods:
- Utilized transmission electron microscopy (TEM) and a nanomanipulator for in-situ observation.
- Measured detaching forces of coalesced CNTs.
- Performed molecular dynamics (MD) simulations for force analysis.
Main Results:
- Observed discrete detaching force values corresponding to van der Waals interactions and single/double sp2/sp3-like bonds.
- Correlated measured forces with MD simulation results.
- Demonstrated that electrical current influences junction formation.
Conclusions:
- Atomically controlled junctions of CNTs are achievable.
- The degree of electrical current precisely tunes the nature of CNT junctions.
- This work provides a pathway for engineering CNT-based nanodevices.
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