Laser Trapping of Colloidal Metal Nanoparticles
Artikel i vetenskaplig tidskrift, 2015

Optical trapping using focused laser beams (laser tweezers) has been proven to be extremely useful for contactless manipulation of a variety of small objects, including biological cells, organelles within cells, and a wide range of other dielectric micro- and nano-objects. Colloidal metal nanoparticles have drawn increasing attention in the field of optical trapping because of their unique interactions with electromagnetic radiation, caused by surface plasmon resonance effects, enabling a large number of nano-optical applications of high current interest. Here we try to give a comprehensive overview of the field of laser trapping and manipulation of metal nanoparticles based on results reported in the recent literature. We also discuss and describe the fundamentals of optical forces in the context of plasmonic nanoparticles, including effects of polarization, optical angular momentum, and laser heating effects, as well as the various techniques that have been used to trap and manipulate metal nanoparticles. We conclude by suggesting possible directions for future research.

optical torque

optical manipulation

colloidal metal nanoparticles

optical force

interparticle forces

surface plasmon resonance

laser tweezers

laser heating


Anni Lehmuskero

Chalmers, Teknisk fysik, Bionanofotonik

Peter Johansson

Örebro universitet

Chalmers, Teknisk fysik, Bionanofotonik

Halina Rubinsetein

University of Queensland

Lianming Tong

Beijing University of Technology

Chinese Academy of Sciences

Mikael Käll

Chalmers, Teknisk fysik, Bionanofotonik

ACS Nano

1936-0851 (ISSN) 1936-086X (eISSN)

Vol. 9 4 3453-3469





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