Related Experiment Video
Updated: Dec 15, 2025
04:57
Residue-Free Fabrication of van der Waals Heterostructures of Two-Dimensional Materials
Published on: July 18, 2025
813
Quantifying Water Friction in Misaligned Graphene Channels under Ångström Confinements
Enrique Wagemann1,2, Sirshendu Misra1, Siddhartha Das3
1Micro & Nano-Scale Transport Laboratory, Waterloo Institute for Nanotechnology, Department of Mechanical and Mechatronics Engineering, University of Waterloo, Waterloo, Ontario N2L 3G1, Canada.
ACS Applied Materials & Interfaces
|July 15, 2020
Summary
Engineering misalignments in graphene (GE) channels significantly reduces water transport resistance. This discovery offers a new way to enhance water flow in angstrom-height GE nanofluidic devices.
Area of Science:
- Materials Science
- Nanotechnology
- Fluid Dynamics
Background:
- Two-dimensional (2D) materials like graphene are key for novel nanofluidic devices.
- Experimental advances allow 2D material-based channels with angstrom-level heights.
Purpose of the Study:
- Investigate how relative misalignment of graphene channel walls affects water transport resistance.
- Explore translational and rotational misalignments in angstrom-height graphene channels.
Main Methods:
- Utilized molecular dynamics simulations.
- Analyzed water transport through graphene channels with varying degrees of translational and rotational misalignment.
Main Results:
- Relative misalignment substantially reduces friction between water and graphene channel walls.
- Translational misalignment shows dependence on degree and flow direction.
- Rotational misalignment (0° < θ < 60°) is independent of angle but consistently lowers resistance.
Conclusions:
- Misalignment creates corrugation and anisotropic energy landscapes, reducing water transport resistance.
- Engineering graphene channel wall misalignments can significantly enhance water transport in angstrom-height devices.
