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Updated: Jan 11, 2026
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A 100 KW Class Applied-field Magnetoplasmadynamic Thruster
Published on: December 22, 2018
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Active nematic pumps
Ignasi Vélez-Cerón1,2, Rodrigo C V Coelho3,4,5, Pau Guillamat6
1Department of Materials Science and Physical Chemistry, Universitat de Barcelona, Barcelona 08028, Spain.
Summary
Researchers developed self-powered microfluidic systems using active nematic gels and triangular obstacles. This innovation enables efficient cargo transport and mixing without external power sources, advancing microfluidic technology.
Area of Science:
- Soft Matter Physics
- Microfluidics Engineering
- Active Matter Systems
Background:
- Microfluidics traditionally relies on external power for flow control.
- Active fluids offer chaotic flows, posing challenges for controlled micro-machine development.
Purpose of the Study:
- To investigate the use of triangular obstacles in active nematic gels to stabilize chaotic flows.
- To develop self-powered microfluidic systems for cargo transport and mixing.
Main Methods:
- Experimental realization of active nematic gels with triangular obstacles.
- Computational simulations to analyze flow dynamics and symmetry breaking.
- Performance analysis of active pumps for velocity and pressure.
Main Results:
- Triangular obstacles locally break fore-aft symmetry in active turbulence.
- Stabilized flow fields exhibit self-pumping capabilities.
- Demonstrated wall-free, self-powered microfluidic systems for transport and mixing.
Conclusions:
- Active nematic gels with tailored obstacles offer a novel approach to self-powered microfluidics.
- This strategy enables precise control over active flows for microfluidic applications.
- Highlights the potential of self-organized mechanodynamics in active fluids.
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