摘要
将系统利用非平衡涨落能量做功，看作是布朗马达受到内外噪声作用的结果，并建立相应的含阻尼、双噪声的扩散模型．通过解析计算和数值模拟，在一维惯性锯齿势中，阐明了乘性噪声驱动布朗马达定向运动的机理，分析了黏滞阻力对定态流的影响．作为应用，解释了单个马达蛋白梯跳运动的实验现象．
A system which uses the non equilibrium fluctuating energy to do work is considered as a result of Brownian motor derived by both internal and external noises. The corresponding diffusion model including damping force and double noise sources is proposed. Through the analytical calculation and numerical simulation, the mechanism of the directed motion of the Brownian motor driven by multiplicative noise and the effect of damping force on the steady current in the one dimensional inertia ratchet potential are accordingly expounded and analyzed. As a application, the experimental phenomenon of the stepping motion of the single motor protein is explained.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第10期1880-1887,共8页
Acta Physica Sinica
基金
国家自然科学基金
