Open AccessAnisotropic dynamics of nanoparticles in clusters at a solid-liquid interface by laser trapping
Author(s) -
Itsuo Hanasaki,
Chie Hosokawa
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1220/1/012015
Subject(s) - brownian motion , anisotropy , trapping , laser , displacement (psychology) , nanoparticle , materials science , laser power scaling , field (mathematics) , brownian dynamics , optics , optical tweezers , mean squared displacement , mechanics , molecular physics , chemical physics , physics , nanotechnology , molecular dynamics , psychology , ecology , mathematics , quantum mechanics , pure mathematics , psychotherapist , biology
It is well-recognized that the Brownian motion of particles in fluids is random. Nevertheless, there can be characteristics depending on the specific physical conditions. We analyze the system of nanoparticle clusters formed by the laser trapping force field at the solid-liquid interface, based on the microscopy movie data. Since the laser trapping force field is basically a function of radial distance from the focal point in the two dimension at the liquid-solid interface, we examine the difference of displacement distributions in the radial and circumferential directions. The results show that the basic characteristics in this system depends on the laser power, and there is an anisotropy in the stochastic motion of the nanoparticles.