双稳态
随机共振
布朗运动
物理
噪音(视频)
垂直的
粒子(生态学)
布朗噪声
共振(粒子物理)
振幅
俘获
机械
经典力学
几何学
原子物理学
光学
白噪声
数学
量子力学
生态学
海洋学
统计
人工智能
计算机科学
图像(数学)
生物
地质学
作者
Shouhui Duan,Bixuan Fan,Zhenglu Duan
出处
期刊:Symmetry
[MDPI AG]
日期:2023-12-11
卷期号:15 (12): 2183-2183
摘要
The investigation of a Brownian particle subjected to an AC force that diffuses within a T-shaped chamber was conducted. This T-shaped chamber is composed of a strip cavity and a trapezoidal cavity positioned below it. The interplay between the AC force and asymmetric geometry creates a spatially bistable potential perpendicular to the AC force. With the assistance of noise, the particles can transition between two stable states and oscillate along the AC force at corresponding amplitudes at every spatially stable state. The asymmetric geometry facilitates the trapezoid cavity’s ability to more easily trap the Brownian particle than the upper strip cavity in the weak noise limit. Our observations reveal that proper noise can ensure the particle’s efficient trapping within the upper strip cavity and synchronization with the AC force, indicating the occurrence of geometric stochastic resonance. The T-shaped chamber serves as a simplified model, aiding in the further understanding of geometric stochastic resonance induced by irregular geometries and enabling the manipulation of microscopic particles in various small-scale systems.
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