Optical spectroscopy of single trapped metal nanoparticles in solution
Artikel i vetenskaplig tidskrift, 2004

We present a simple method for the optical manipulation and spectroscopy of colloidal silver nanoparticles in aqueous solution using optical tweezers combined with dark-field microscopy. Because of their localized plasmon resonances, single trapped metal nanoparticles can be used as efficient near-field optical probes, with potential applicability in surface-enhanced spectroscopy, near-field microscopy, and biochemical sensing schemes. As a proof of principle, we study the near-field optical interaction between a trapped and an immobilized Ag nanoparticle.

Författare

Juris Prikulis

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Fredrik Svedberg

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Mikael Käll

Chalmers, Teknisk fysik, Kondenserade materiens fysik

Jonas Enger

Göteborgs universitet

Kerstin Ramser

Göteborgs universitet

Mattias Goksör

Göteborgs universitet

Dag Hanstorp

Göteborgs universitet

Nano Letters

1530-6984 (ISSN) 1530-6992 (eISSN)

Vol. 4 1 115-118

Ämneskategorier

Annan teknik

Atom- och molekylfysik och optik

DOI

10.1021/nl0349606