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Related Experiment Video

Updated: Jun 12, 2026

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Probing the Structure and Dynamics of Interfacial Water with Scanning Tunneling Microscopy and Spectroscopy

Published on: May 27, 2018

Methane molecules drive water molecules along diameter-gradient SWCNTs with junctions.

H Q Yu¹, Y F Li, H Li

¹Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China.

The Journal of Physical Chemistry. B

|June 16, 2010

Summary

Methane molecules can pull water through carbon nanotube junctions, overcoming barriers. More junctions enhance methane

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Published on: May 28, 2007

Area of Science:

Nanotechnology
Materials Science
Physical Chemistry

Background:

Single-walled carbon nanotubes (SWCNTs) are explored for molecular transport applications.
Understanding molecular interactions within confined systems is crucial for developing new technologies.

Purpose of the Study:

To investigate the transport behavior of water molecules through coaxial SWCNTs with junctions.
To determine the role of methane molecules as a driving force for water transport across potential barriers.

Main Methods:

Simulation of water and methane molecule transport within coaxial SWCNTs.
Analysis of molecular interactions and energy barriers at nanotube junctions.

Main Results:

Junctions act as potential barriers for water molecule transport.
Methane molecules effectively overcome these barriers, pulling water molecules across.
Increased numbers of junctions prolong the driving force of methane, aiding water expulsion.

Conclusions:

Methane-driven water transport is feasible in SWCNT systems with junctions.
The presence and number of junctions significantly influence the efficiency of molecular transport.
This mechanism offers potential for controlled molecular separation and manipulation within nanoscale systems.