Measuring the distance dependence of the local electromagnetic field from silver nanoparticles

被引：99

作者：

Evanoff, DD ^{[1
]}

White, RL ^{[1
]}

Chumanov, G ^{[1
]}

机构：

[1] Clemson Univ, Dept Chem, Clemson, SC 29634 USA

来源：

JOURNAL OF PHYSICAL CHEMISTRY B | 2004年 / 108卷 / 05期

关键词：

D O I：

10.1021/jp036899z

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The distance dependence of the local EM field associated with 84+/-5 nm silver particles is characterized by monitoring spectral shifts in the plasmon resonance due to changes in local dielectric environment, which was controlled by coating the particles with silica layers of various thicknesses. The local EM field that extends beyond the physical boundaries of the particles is defined as that providing "feedback" between the local environment and the electron oscillations in a particle.

引用

收藏

页码：1522 / 1524

页数：3

相关论文

共 14 条

[1]

CHUMANOV G, 1995, J PHYS CHEM-US, V99, P9946

[2] Metal-enhanced fluorescence (MEF) due to silver colloids on a planar surface: Potential applications of indocyanine green to in vivo imaging [J].

Geddes, CD ;

Cao, H ;

Gryczynski, I ;

Gryczynski, Z ;

Fang, JY ;

Lakowicz, JR .

JOURNAL OF PHYSICAL CHEMISTRY A, 2003, 107 (18) :3443-3449

[3] Coating of nanosize silver particles with silica [J].

Hardikar, VV ;

Matijevic, E .

JOURNAL OF COLLOID AND INTERFACE SCIENCE, 2000, 221 (01) :133-136

[4] Nanosphere lithography: Effect of the external dielectric medium on the surface plasmon resonance spectrum of a periodic array of sliver nanoparticles [J].

Jensen, TR ;

Duval, ML ;

Kelly, KL ;

Lazarides, AA ;

Schatz, GC ;

Van Duyne, RP .

JOURNAL OF PHYSICAL CHEMISTRY B, 1999, 103 (45) :9846-9853

[5] Ultrasensitive chemical analysis by Raman spectroscopy [J].

Kneipp, K ;

Kneipp, H ;

Itzkan, I ;

Dasari, RR ;

Feld, MS .

CHEMICAL REVIEWS, 1999, 99 (10) :2957-+

[6]

Kreibig U., 1995, OPTICAL PROPERTIES M

[7] Synthesis of nanosized gold-silica core-shell particles [J].

Liz-Marzan, LM ;

Giersig, M ;

Mulvaney, P .

LANGMUIR, 1996, 12 (18) :4329-4335

[8] Light-induced coherent interactions between silver nanoparticles in two-dimensional arrays [J].

Malynych, S ;

Chumanov, G .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2003, 125 (10) :2896-2898

[9] LOCAL-FIELDS AT THE SURFACE OF NOBLE-METAL MICROSPHERES [J].

MESSINGER, BJ ;

VONRABEN, KU ;

CHANG, RK ;

BARBER, PW .

PHYSICAL REVIEW B, 1981, 24 (02) :649-657

[10] SILVER ISLAND FILMS FOR SURFACE-ENHANCED INFRARED-ABSORPTION SPECTROSCOPY - EFFECT OF ISLAND MORPHOLOGY ON THE ABSORPTION ENHANCEMENT [J].

NISHIKAWA, Y ;

NAGASAWA, T ;

FUJIWARA, K ;

OSAWA, M .

VIBRATIONAL SPECTROSCOPY, 1993, 6 (01) :43-53