Optically Induced Sieve Effect for Nanoparticles near a Nanofiber Taper

被引：4

作者：

Sadgrove, Mark ^{[1
]}

Yoshino, Takaaki ^{[2
]}

Sugawara, Masakazu ^{[2
]}

Mitsumori, Yasuyoshi ^{[2
,3
]}

Edamatsu, Keiichi ^{[2
]}

机构：

[1] Tokyo Univ Sci, Fac Sci, Dept Phys, Shinjuku Ku, 1-3 Kagurazaka, Tokyo 1628601, Japan

[2] Tohoku Univ, Res Inst Elect Commun, Sendai, Miyagi 9808577, Japan

[3] Kitasato Univ, Sch Sci, Dept Phys, Sagamihara, Kanagawa 2520373, Japan

来源：

PHYSICAL REVIEW APPLIED | 2021年 / 16卷 / 04期

基金：

日本学术振兴会;

关键词：

QUANTUM DOTS; SIZE; SEPARATION; PARTICLES; TRANSPORT; STRATEGY; FACILE;

D O I：

10.1103/PhysRevApplied.16.044034

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We demonstrate size-selective optical trapping and transport for nanoparticles near an optical nanofiber taper. Using a two-wavelength counterpropagating mode configuration, we show that 100-nm-diameter and 150-nm-diameter gold nanospheres (GNSs) are trapped by the evanescent field in the taper region at different optical powers. Conversely, when one nanoparticle species is trapped the other may be transported, leading to a sievelike effect. Our results show that sophisticated optical manipulation can be achieved in a passive configuration by taking advantage of mode behavior in nanophotonic devices.

引用

页数：9

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