Optical trapping of porous silicon nanoparticles

被引：20

作者：

Donato, Maria G. ^{[1
]}

Monaca, Marco A. ^{[1
,2
]}

Faggio, Giuliana ^{[2
]}

De Stefano, Luca ^{[3
]}

Jones, Philip H. ^{[4
]}

Gucciardi, Pietro G. ^{[1
]}

Marago, Onofrio M. ^{[1
]}

机构：

[1] IPCF CNR, Ist Proc Chim Fis, I-98158 Messina, Italy

[2] Univ Mediterranea Reggio Calabria, Fac Ingn, Dipartimento Meccan & Mat MECMAT, I-89060 Reggio Di Calabria, Italy

[3] IMM CNR, Ist Microelettronia & Microsistemi, Unita Napoli, I-80131 Naples, Italy

[4] UCL, Dept Phys & Astron, London WC1E 6BT, England

来源：

NANOTECHNOLOGY | 2011年 / 22卷 / 50期

关键词：

NANOCRYSTALLINE SILICON; CARBON NANOTUBES; RAMAN-SPECTRUM; TWEEZERS; FORCE; LIGHT; MANIPULATION; PARTICLES; FABRICATION; PHOTONICS;

D O I：

10.1088/0957-4484/22/50/505704

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Silicon nanoparticles obtained by ball-milling of a 50% porosity silicon layer have been optically trapped when dispersed in a water-surfactant environment. We measured the optical force constants using linearly and radially polarized trapping beams finding a reshaping of the optical potential and an enhanced axial spring constant for the latter. These measurements open perspectives for the control and handling of silicon nanoparticles as labeling agents in biological analysis and fluorescence imaging techniques.

引用

页数：8

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