ELECTROMAGNETIC MECHANISM OF ENHANCED INFRARED-ABSORPTION OF MOLECULES ADSORBED ON METAL ISLAND FILMS

被引：79

作者：

OSAWA, M

ATAKA, K

机构：

[1] Department of Molecular Chemistry and Engineering, Faculty of Engineering, Tohoku University, Aoba-ku, Sendai, 980, Aoba, Aramaki

来源：

SURFACE SCIENCE | 1992年 / 262卷 / 03期

关键词：

D O I：

10.1016/0039-6028(92)90119-Q

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：

Infrared absorption of molecules is enhanced when they are absorbed on island films of noble metals. An electromagnetic model which explains this phenomenon is proposed. The enhanced absorption is not of the absorbed molecules themselves but arises from the change in the effective dielectric function of the metal-island film at the frequencies of the molecular vibrations caused by the dipole interaction between the metal-islands and the adsorbed molecule. Using the Maxwell-Garnett effective medium theory, an enhancement factor of the order of 10 is calculated.

引用

页码：L118 / L122

页数：5

共 25 条

[1] Chang R. K., 1982, SURFACE ENHANCED RAM
[2] OPTICAL-ABSORPTION OF SMALL METAL PARTICLES WITH ADSORBED DYE COATS
CRAIGHEAD, HG
GLASS, AM
[J]. OPTICS LETTERS, 1981, 6 (05) : 248 - 250
[3] EAGEN CF, 1981, APPL OPTICS, V20, P3035, DOI 10.1364/AO.20.003035
[4] PHOTOPHYSICS AND PHOTOCHEMISTRY NEAR SURFACES AND SMALL PARTICLES
GERSTEN, JI
NITZAN, A
[J]. SURFACE SCIENCE, 1985, 158 (1-3) : 165 - 189
[5] ELECTRIC FIELDS PRODUCED BY PROPAGATION OF PLANE COHERENT ELECTROMAGNETIC RADIATION IN A STRATIFIED MEDIUM
HANSEN, WN
[J]. JOURNAL OF THE OPTICAL SOCIETY OF AMERICA, 1968, 58 (03) : 380 - &
[6] ENHANCEMENT OF THE INFRARED-ABSORPTION FROM MOLECULAR MONOLAYERS WITH THIN METAL OVERLAYERS
HARTSTEIN, A
KIRTLEY, JR
TSANG, JC
[J]. PHYSICAL REVIEW LETTERS, 1980, 45 (03) : 201 - 204
[7] INFRARED-ABSORPTION ENHANCEMENT OF MONOLAYER SPECIES ON THIN EVAPORATED AG FILMS BY USE OF A KRETSCHMANN CONFIGURATION - EVIDENCE FOR 2 TYPES OF ENHANCED SURFACE ELECTRIC-FIELDS
HATTA, A
SUZUKI, Y
SUETAKA, W
[J]. APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1984, 35 (03): : 135 - 140
[8] OPTICAL CONSTANTS OF NOBLE METALS
JOHNSON, PB
CHRISTY, RW
[J]. PHYSICAL REVIEW B, 1972, 6 (12) : 4370 - 4379
[9] INTENSITY ENHANCEMENT OF INFRARED ATTENUATED TOTAL REFLECTION SPECTRA OF STEARIC-ACID LANGMUIR-BLODGETT MONOLAYERS WITH EVAPORATED SILVER ISLAND FILMS
KAMATA, T
KATO, A
UMEMURA, J
TAKENAKA, T
[J]. LANGMUIR, 1987, 3 (06) : 1150 - 1154
[10] THE EFFECT OF RANDOMLY DISTRIBUTED SURFACE BUMPS ON LOCAL FIELD ENHANCEMENTS IN SURFACE ENHANCED RAMAN-SPECTROSCOPY
LAOR, U
SCHATZ, GC
[J]. JOURNAL OF CHEMICAL PHYSICS, 1982, 76 (06) : 2888 - 2899

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