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Shear annealing of a self-interacting sheet
William T Funkenbusch1, Kevin S Silmore1, Patrick S Doyle1
1Department of Chemical Engineering, Massachusetts Institute of Technology, 25 Ames St, Cambridge, MA, 02139, USA. pdoyle@mit.edu.
Soft Matter
|August 22, 2024
Summary
This study explores how time-varying shear affects two-dimensional (2D) materials in suspension. Researchers found that simple protocols can tune the properties of these 2D material suspensions, enabling new applications.
Area of Science:
- Materials Science
- Fluid Dynamics
- Nanotechnology
Background:
- Two-dimensional (2D) materials like graphene and transition metal dichalcogenides possess unique properties for diverse applications.
- Solution processing is crucial for producing and utilizing these 2D materials.
- Previous research on 2D sheets in flow primarily focused on steady-state conditions, potentially missing dynamic effects like hysteresis.
Purpose of the Study:
- To investigate the behavior of 2D sheets with attractive interactions under time-varying shear flow.
- To explore the potential for tuning the properties of 2D material suspensions through dynamic flow protocols.
Main Methods:
- Computational modeling of 2D sheets under time-varying shear.
- Analysis of sheet dynamics and suspension properties under non-steady flow conditions.
Main Results:
- Observed that time-varying shear influences the dynamics of 2D sheets.
- Demonstrated that suspension properties can be effectively tuned using relatively simple time-varying shear protocols.
- Highlighted the potential for hysteresis in the dynamic behavior of 2D sheets.
Conclusions:
- Time-varying shear is a viable method for controlling and tuning the properties of 2D material suspensions.
- Understanding dynamic flow behavior is essential for optimizing the application of 2D materials.
- This work opens avenues for novel material processing techniques in nanotechnology and biotechnology.
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