Interaction of Pair Particles Mediated by Signal Molecules

A mesoscopic model is set up to study the predatorprey-like phenomenon between two chemically active objects. A target sphere （T） secretes chemical signal molecules that are detected and traced by a hunter sphere （H）. The distribution of signal molecules diffusing around the target is simulated and...

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Bibliographic Details
Published inChinese physics letters Vol. 33; no. 1; pp. 140 - 143
Main Author 陈江星 郑强 黄春云 徐江荣 应和平
Format Journal Article
LanguageEnglish
Published 2016
Subjects
Computer simulation
Decay rate
Diffusion
Exponents
Infinity
Power law
Separation
介导
信号分子
捕获时间
活性物
猎人
相互作用
粒子
衰变率
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Summary:A mesoscopic model is set up to study the predatorprey-like phenomenon between two chemically active objects. A target sphere （T） secretes chemical signal molecules that are detected and traced by a hunter sphere （H）. The distribution of signal molecules diffusing around the target is simulated and analyzed. The chemotactic behavior of the hunter along the gradient of signal molecules results in the capture of the target. The dependences of capture time tc on different conditions are focused on. It is found that the values of capture time rely on their initial separation d as a power law tc ∝ d^a. The exponent a depends on decay rate of signal molecules. The capture time increases with the decay rate. The increases of target and hunter size both lead to the decrease of the capture time, which is also shown by the power law behavior. The detailed chemotaxis process is investigated.
Bibliography:11-1959/O4
A mesoscopic model is set up to study the predatorprey-like phenomenon between two chemically active objects. A target sphere （T） secretes chemical signal molecules that are detected and traced by a hunter sphere （H）. The distribution of signal molecules diffusing around the target is simulated and analyzed. The chemotactic behavior of the hunter along the gradient of signal molecules results in the capture of the target. The dependences of capture time tc on different conditions are focused on. It is found that the values of capture time rely on their initial separation d as a power law tc ∝ d^a. The exponent a depends on decay rate of signal molecules. The capture time increases with the decay rate. The increases of target and hunter size both lead to the decrease of the capture time, which is also shown by the power law behavior. The detailed chemotaxis process is investigated.
Jiang-Xing Chen, Qiang Zheng, Chun-Yun Huang, Jiang-Rong Xu, He-Ping Ying（1Department of Physics, Hangzhou Dianzi University, Hangzhou 310018 ; 2Department of Physics, Nanjing University, Nanjing 210093 ;3Department of Physics, Zhejiang University, Hangzhou 310027）
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:0256-307X
1741-3540
DOI:10.1088/0256-307X/33/1/018701