Related Experiment Video
Updated: Nov 9, 2025
08:32
Assembly and Characterization of an External Driver for the Generation of Sub-Kilohertz Oscillatory Flow in Microchannels
Published on: January 28, 2022
2.6K
Entropic stochastic resonance induced by a transverse driving force
1Department of Physics, Yunnan University, Kunming, 650091, People's Republic of China.
Summary
Entropic stochastic resonance (ESR) can occur without a static bias force, driven by a transverse periodic force. This force initially suppresses particle escape but noise then induces ESR, offering control over small systems.
Area of Science:
- Nonlinear Dynamics
- Statistical Physics
- Complex Systems
Background:
- Entropic stochastic resonance (ESR) typically requires a static bias force.
- Understanding resonance phenomena in driven nonlinear systems is crucial.
Purpose of the Study:
- Investigate ESR in the absence of static bias, using a transverse periodic force.
- Explore the role of noise and transverse driving on system dynamics.
Main Methods:
- Numerical simulations were employed to study the system's behavior.
- Analysis focused on escape rates and introduced the mean free flying time.
Main Results:
- ESR was observed without a static bias, solely with a transverse driving field.
- A transverse force initially suppressed escape rates (entropic trapping), which noise then overcame to induce ESR.
- Mean free flying time was proposed as an effective metric for characterizing ESR.
Conclusions:
- A transverse periodic force can effectively induce and control ESR in nonlinear systems.
- This provides a novel method for manipulating the dynamics of small-scale systems.
- The findings extend the understanding of stochastic resonance beyond traditional frameworks.
Related Concept Videos
01:06Forced Oscillations
7.2K
When an oscillator is forced with a periodic driving force, the motion may seem chaotic. The motions of such oscillators are known as transients. After the transients die out, the oscillator reaches a steady state, where the motion is periodic, and the displacement is determined.
7.2K
01:19Concept of Resonance and its Characteristics
5.5K
If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not...
5.5K
01:14Sound Waves: Resonance
2.9K
Resonance is produced depending on the boundary conditions imposed on a wave. Resonance can be produced in a string under tension with symmetrical boundary conditions (i.e., has a node at each end). A node is defined as a fixed point where the string does not move. The symmetrical boundary conditions result in some frequencies resonating and producing standing waves, while other frequencies interfere destructively. Sound waves can resonate in a hollow tube, and the frequencies of the sound...
2.9K
01:07Damped Oscillations
6.4K
In the real world, oscillations seldom follow true simple harmonic motion. A system that continues its motion indefinitely without losing its amplitude is termed undamped. However, friction of some sort usually dampens the motion, so it fades away or needs more force to continue. For example, a guitar string stops oscillating a few seconds after being plucked. Similarly, one must continually push a swing to keep a child swinging on a playground.
Although friction and other non-conservative...
Although friction and other non-conservative...
6.4K
01:24Transient and Steady-state Response
360
In control systems, test signals are essential for evaluating performance under various conditions. The ramp function is effective for systems undergoing gradual changes, while the step function is suitable for assessing systems facing sudden disturbances. For systems subjected to shock inputs, the impulse function is the most appropriate test signal.
These test signals are integral in designing control systems to exhibit two key performance aspects: transient response and steady-state...
These test signals are integral in designing control systems to exhibit two key performance aspects: transient response and steady-state...
360
01:20Elastic Strain Energy for Shearing Stresses
351
As discussed in previous lessons, strain energy in a material is the energy stored when it is elastically deformed, a concept crucial in materials science and mechanical engineering. This energy results from the internal work done against the cohesive forces within the material. When a material undergoes shearing stress and corresponding shearing strain, the strain energy density, which is the energy stored per unit volume, is calculated. Within the elastic limit, where the stress is...
351