CPL - Chalmers Publication Library
| Utbildning | Forskning | Styrkeområden | Om Chalmers | In English In English Ej inloggad.

Alignment, Rotation, and Spinning of Single Plasmonic Nanoparticles and Nanowires Using Polarization Dependent Optical Forces

Lianming Tong (Institutionen för teknisk fysik, Bionanofotonik) ; Vladimir D. Miljkovic (Institutionen för teknisk fysik, Bionanofotonik) ; Mikael Käll (Institutionen för teknisk fysik, Bionanofotonik)
Nano Letters (1530-6984). Vol. 10 (2010), 1, p. 268-273.
[Artikel, refereegranskad vetenskaplig]

We demonstrate optical alignment and rotation of individual plasmonic nanostructures with lengths from Lens of nanometers to several micrometers using a single beam of linearly polarized near-infrared laser light. Silver nanorods and dimers of gold nanoparticles align parallel to the laser polarization because of the high long-axis dipole polarizability. Silver nanowires, in contrast, spontaneously turn perpendicular to the incident polarization and predominantly attach at the wire ends, in agreement with electrodynamics simulations. Wires, rods, and dimers all rotate if the incident polarization is turned. In the case of nanowires, we demonstrate spinning at an angular frequency of similar to 1 Hz due to transfer of spin angular momentum from circularly polarized light.

Nyckelord: Optical manipulation, nanoparticles, surface plasmons, laser tweezers



Den här publikationen ingår i följande styrkeområden:

Läs mer om Chalmers styrkeområden  

Denna post skapades 2011-01-21. Senast ändrad 2012-06-20.
CPL Pubid: 135780

 

Läs direkt!


Länk till annan sajt (kan kräva inloggning)


Institutioner (Chalmers)

Institutionen för teknisk fysik, Bionanofotonik (2007-2015)

Ämnesområden

Nanovetenskap och nanoteknik
Kemi
Materialteknik

Chalmers infrastruktur

Relaterade publikationer

Denna publikation ingår i:


Simulations of directionality effects and optical forces in plasmonic nanostructures