Role of time scales for the non-Gaussianity of the Brownian motion combined with intermittent adsorption

Itsuo Hanasaki, Satoshi Uehara, Satoyuki Kawano

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

Single-molecule tracking data near solid surfaces contain information on diffusion that is potentially affected by adsorption. However, molecular adsorption can occur in an intermittent manner, and the overall phenomenon is regarded as slower yet normal diffusion if the time scale of each adsorption event is sufficiently shorter than the interval of data acquisition. We compare simple numerical model systems that vary in the time scale of adsorption event while sharing the same diffusion coefficient, and show that the shape of the displacement distribution depends on the time resolution. We also evaluate the characteristics by statistical quantities related to the large deviation principle. We show that the characteristic time scale of the intermittent phenomena is elucidated when the time resolution of the observation is sufficiently fine and the amount of data is sufficiently large to evaluate the intermittency.

Original languageEnglish
Pages (from-to)311-316
Number of pages6
JournalJournal of Computational Science
Volume10
DOIs
Publication statusPublished - 2015 Sep 1
Externally publishedYes

Keywords

  • Brownian motion
  • Single molecule
  • Single particle tracking
  • Surface
  • Time series analysis

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)
  • Modelling and Simulation

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