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Chaotic motion due to lateral Casimir forces during nonlinear actuation dynamics
F Tajik1, A A Masoudi1, M Sedighi2
1Department of Physics, Alzahra University, Tehran 1993891167, Iran.
Chaos (Woodbury, N.Y.)
|August 6, 2020
Summary
The lateral Casimir force impacts device actuation. Higher conductivity materials like gold (Au) ensure stable operation by enhancing this force, unlike silicon carbide (SiC).
Area of Science:
- Nanotechnology
- Materials Science
- Physics
Background:
- The Casimir force, a quantum electrodynamic effect, influences micro- and nano-electromechanical systems.
- Understanding the lateral Casimir force is crucial for designing stable dynamical actuation systems.
Purpose of the Study:
- To investigate the influence of lateral Casimir force on dynamical actuation.
- To analyze the effect of material optical properties on system stability.
Main Methods:
- Analysis of conservative and non-conservative driven systems.
- Examination of heteroclinic and homoclinic orbits using Melnikov parameter.
- Comparison of material properties, specifically nitrogen-doped SiC and Au.
Main Results:
- Higher conductivity materials (Au-Au) achieve stable operation faster due to a stronger lateral Casimir force.
- Lower conductivity materials (SiC-SiC) exhibit more pronounced chaotic motion.
- Decreasing the Melnikov parameter leads to faster disappearance of satellite orbits and shrinkage of the central orbit.
Conclusions:
- Material optical properties significantly impact the lateral Casimir force and device stability.
- Higher conductivity materials are preferable for stable actuation in systems where the lateral Casimir force is significant.
- The findings provide guidance for selecting materials to prevent chaotic motion in actuating devices.
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