Optical spectroscopy of single trapped metal nanoparticles in solution

被引：157

作者：

Prikulis, J

Svedberg, F

Käll, M

Enger, J

Ramser, K

Goksör, M

Hanstorp, D

机构：

[1] Chalmers Univ Technol, S-41296 Gothenburg, Sweden

[2] Gothenburg Univ, S-41296 Gothenburg, Sweden

来源：

NANO LETTERS | 2004年 / 4卷 / 01期

关键词：

D O I：

10.1021/nl0349606

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

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.

引用

页码：115 / 118

页数：4

共 34 条

[1] Optical forces on small particles:: attractive and repulsive nature and plasmon-resonance conditions [J].

Arias-González, JR ;

Nieto-Vesperinas, M .

JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION, 2003, 20 (07) :1201-1209

[2] OBSERVATION OF A SINGLE-BEAM GRADIENT FORCE OPTICAL TRAP FOR DIELECTRIC PARTICLES [J].

ASHKIN, A ;

DZIEDZIC, JM ;

BJORKHOLM, JE ;

CHU, S .

OPTICS LETTERS, 1986, 11 (05) :288-290

[3]

Bohren C., 1983, ABSORPTION SCATTERIN

[4]

Buer CS, 1998, BIOTECHNOL BIOENG, V60, P348, DOI 10.1002/(SICI)1097-0290(19981105)60:3&lt

[5]

348::AID-BIT11&gt

[6]

3.0.CO

[7]

2-I

[8] Optical trapping of metallic particles by a fixed Gaussian beam [J].

Furukawa, H ;

Yamaguchi, I .

OPTICS LETTERS, 1998, 23 (03) :216-218

[9] An experimental setup for combining optical tweezers and laser scalpels with advanced imaging techniques. [J].

Goksör, M ;

Enger, J ;

Ramser, K ;

Hanstorp, D .

MICROARRAYS AND COMBINATORIAL TECHNOLOGIES FOR BIOMEDICAL APPLICATIONS: DESIGN, FABRICATION, AND ANALYSIS, 2003, 4966 :50-57

[10] Radiation forces on a dielectric sphere in the Rayleigh scattering regime [J].

Harada, Y ;

Asakura, T .

OPTICS COMMUNICATIONS, 1996, 124 (5-6) :529-541

← 1 2 3 4 →