標題: Femtosecond laser trapping, assembling, and ejection dynamics of dielectric nanoparticles in solution
作者: Masuhara, Hiroshi
Chen, Jim Jui-Kai
Chiang, Wei-Yi
Usman, Anwar
Sugiyama, Teruki
Hofkens, Johan
應用化學系
Department of Applied Chemistry
關鍵字: femtosecond laser;optical trapping;optical ejection;optical assembling;dielectric nanoparticle
公開日期: 1-Jan-2018
摘要: We elucidated femtosecond laser trapping dynamics of Rayleigh particles by modifying the surface property of nanoparticles and changing the viscosity. Through bright field, dark field and backscattering images, we monitored ejection behavior of nanoparticles which takes place in the direction perpendicular to laser polarization and switched from one side to the other. For very hydrophobic nanoparticle, we succeeded in observing directly a transient assembly and confirmed that its formation is responsible to the directional ejection. Also the trapping dynamics was compared for femtosecond and continuous-wave lasers in highly viscous solvent, which gives a new viewpoint for understanding femtosecond laser trapping mechanism.
URI: http://dx.doi.org/10.1117/12.2318416
http://hdl.handle.net/11536/146220
ISSN: 0277-786X
DOI: 10.1117/12.2318416
期刊: OPTICAL MANIPULATION CONFERENCE
Volume: 10712
Appears in Collections:Conferences Paper