Effect of electromagnetic interactions on plasmon excitations in silver particle ensembles

被引：6

作者：

Benia, H. -M. ^{[1
]}

Nilius, N. ^{[1
]}

Freund, H. -J. ^{[1
]}

机构：

[1] Max Planck Gesell, Fritz Haber Inst, D-14195 Berlin, Germany

来源：

SURFACE SCIENCE | 2006年 / 600卷 / 10期

关键词：

silver particles; photon emission spectroscopy; scanning tunneling microscopy;

D O I：

10.1016/j.susc.2006.03.010

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 optical properties of silver nano-particle ensembles are studied as a function of particle density by analyzing the light emission excited via electron injection from an STM tip. The particles are prepared with distinct dome and disk-like shapes on a Al2O3/NiAl(110) support. The particle density is varied over one order of magnitude by changing the Ag deposition temperature and the defect concentration in the oxide surface. With increasing density, a pronounced blue shift of the Ag plasmon mode is observed for ensembles of domelike particles, whereas disk-like particles show relatively constant resonance energies. The observed evolution of plasmon energy as a function of particle density reflects the influence of electromagnetic interactions in the ensemble, as verified by model calculations. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：L128 / L133

页数：6

共 27 条

[1]

[Anonymous], 2011, RECENT PAT BIOTECHNO

[2] Al2O3-films on Ni3Al(111):: a template for nanostructured cluster growth -: art. no. 75 [J].

Becker, C ;

Rosenhahn, A ;

Wiltner, A ;

von Bergmann, K ;

Schneider, J ;

Pervan, P ;

Milun, M ;

Kralj, M ;

Wandelt, K .

NEW JOURNAL OF PHYSICS, 2002, 4 :75.1-75.15

[3]

Berndt R, 1998, SCANNING PROBE MICRO, P97

[4]

Dirix Y, 1999, ADV MATER, V11, P223, DOI 10.1002/(SICI)1521-4095(199903)11:3<223::AID-ADMA223>3.0.CO

[5]

2-J

[6]

Edwards D.F., 1985, Handbook of optical constants of solids

[7]

FREUND HJ, 1999, ANGEW CHEM, V38, P2192

[8] Nanoparticle optics: The importance of radiative dipole coupling in two-dimensional nanoparticle arrays [J].

Haynes, CL ;

McFarland, AD ;

Zhao, LL ;

Van Duyne, RP ;

Schatz, GC ;

Gunnarsson, L ;

Prikulis, J ;

Kasemo, B ;

Kall, M .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (30) :7337-7342

[9] Silver nanoparticles deposited on dielectric surfaces [J].

Hilger, A ;

Tenfelde, M ;

Kreibig, U .

APPLIED PHYSICS B-LASERS AND OPTICS, 2001, 73 (04) :361-372

[10] Single molecule detection using surface-enhanced Raman scattering (SERS) [J].

Kneipp, K ;

Wang, Y ;

Kneipp, H ;

Perelman, LT ;

Itzkan, I ;

Dasari, R ;

Feld, MS .

PHYSICAL REVIEW LETTERS, 1997, 78 (09) :1667-1670

← 1 2 3 →