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dc.contributor.authorWang, Shun-Faen_US
dc.contributor.authorKudo, Tetsuhiroen_US
dc.contributor.authorYuyama, Ken-ichien_US
dc.contributor.authorSugiyama, Terukien_US
dc.contributor.authorMasuhara, Hiroshien_US
dc.date.accessioned2017-04-21T06:55:59Z-
dc.date.available2017-04-21T06:55:59Z-
dc.date.issued2016-11-29en_US
dc.identifier.issn0743-7463en_US
dc.identifier.urihttp://dx.doi.org/10.1021/acs.langmuir.6b02433en_US
dc.identifier.urihttp://hdl.handle.net/11536/132801-
dc.description.abstractAssembling dynamics of polystyrene nanoparticles by optical trapping is studied with utilizing transmission/reflection microscopy and reflection microspectroscopy. A single nanoparticle assembly with periodic structure is formed upon the focused laser irradiation at solution surface layer and continuously grows up to a steady state within few minutes. By controlling nanoparticle and salt concentrations in the colloidal solution, the assembling behavior is obviously changed. In the high concentration of nanoparticles, the assembly formation exhibits fast growth, gives large saturation size, and leads to dense packing structure. In the presence of salt, one assembly with the elongated aggregates was generated from the focal spot and 1064 nm trapping light was scattered outwardly with directions, while a small circular assembly and symmetrical expansion of the 1064 nm light were found without salt. The present nanoparticle assembling in optical trapping is driven through multiple scattering in gathered nanoparticles and directional scattering along the elongated aggregates derived from optical association of nanoparticles, which dynamic phenomenon is called optically evolved assembling. Repetitive trapping and release processes of nanoparticles between the assembly and the surrounding solution always proceed, and the steady state at the circular assembly formed by laser trapping is determined under optical and chemical equilibrium.en_US
dc.language.isoen_USen_US
dc.titleOptically Evolved Assembly Formation in Laser Trapping of Polystyrene Nanoparticles at Solution Surfaceen_US
dc.identifier.doi10.1021/acs.langmuir.6b02433en_US
dc.identifier.journalLANGMUIRen_US
dc.citation.volume32en_US
dc.citation.issue47en_US
dc.citation.spage12488en_US
dc.citation.epage12496en_US
dc.contributor.department應用化學系zh_TW
dc.contributor.department應用化學系分子科學碩博班zh_TW
dc.contributor.departmentDepartment of Applied Chemistryen_US
dc.contributor.departmentInstitute of Molecular scienceen_US
dc.identifier.wosnumberWOS:000389117600027en_US
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