Plasmonic Coupling Dynamics of Silver Nanoparticles in an Optical Trap

被引：15

作者：

Blattmann, Marc ^{[1
]}

Rohrbach, Alexander ^{[1
,2
]}

机构：

[1] Univ Freiburg, Lab Bio & Nanophoton, Dept Microsyst Engn IMTEK, D-79110 Freiburg, Germany

[2] Univ Freiburg, BIOSS Ctr Biol Signalling Studies, D-79110 Freiburg, Germany

来源：

NANO LETTERS | 2015年 / 15卷 / 12期

关键词：

Metal nanoparticle; optical trapping; plasmonic coupling; back focal plane interferometry; reflection spectroscopy; GOLD NANOPARTICLES; METALLIC NANOPARTICLES; MANIPULATION; NANOSPHERES; PARTICLES; BINDING;

D O I：

10.1021/acs.nanolett.5b02532

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We investigate binding and plasmonic coupling between optically trapped 80 nm silver spheres using a combination of spectroscopic sensing and 3D interferometric laser particle tracking on a 1 mu s time scale. We demonstrate that nanopartide coupling can be either spontaneous or induced by another particle through confinement of diffusion. We reveal ultrafast entries and exits of nanopartides inside the optical trap, fast particle rearrangements before binding, and dimer formation allowing new insights into nanopartide self-assembly.

引用

页码：7816 / 7821

页数：6

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