Optical and transport properties of spheroidal metal nanoparticles with account for the surface effect

被引:46
作者
Grigorchuk, Nicolas I. [1 ]
Tomchuk, Petro M. [2 ]
机构
[1] Natl Acad Sci Ukraine, Bogolyubov Inst Theoret Phys, UA-03680 Kiev 143, Ukraine
[2] Natl Acad Sci Ukraine, Inst Phys, UA-03680 Kiev 28, Ukraine
关键词
DIELECTRIC FUNCTION; ELECTRONIC-PROPERTIES; SIZE; ABSORPTION; SILVER; SHAPE; PARTICLES;
D O I
10.1103/PhysRevB.84.085448
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The kinetic approach is applied to develop the Drude-Sommerfeld model for studying the optical and electrical transport properties of spheroidal metallic nanoparticles when the free electron path is much greater than the particle size. For the nanoparticles of an oblate or a prolate spheroidal shape a dependence of the dielectric function and the electric conductivity on a number of factors, including the frequency, the particle radius, the spheroidal aspect ratio, and the orientation of the electric field with respect to the particle axes, has been been found. The oscillations of the real and imaginary parts of the dielectric permeability have been found with increasing particle size at some fixed frequencies or with frequency increasing at some fixed radius of a nanoparticle. The results obtained in the kinetic approach are compared with those known from the classical model.
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页数:14
相关论文
共 56 条
[1]  
Alexandrov A.F., 1984, Principles of Plasma Electrodynamics
[2]   The use of nanocrystals in biological detection [J].
Alivisatos, P .
NATURE BIOTECHNOLOGY, 2004, 22 (01) :47-52
[3]   Optical absorption spectra of nanocrystal gold molecules [J].
Alvarez, MM ;
Khoury, JT ;
Schaaff, TG ;
Shafigullin, MN ;
Vezmar, I ;
Whetten, RL .
JOURNAL OF PHYSICAL CHEMISTRY B, 1997, 101 (19) :3706-3712
[4]  
[Anonymous], 1933, Handbuch der Physik
[5]  
[Anonymous], 1984, Electrodynamics of Continuous Media
[6]  
[Anonymous], 2002, Relativistic boltzmann equation
[7]   Direct measurement of the single-metal-cluster optical absorption -: art. no. 127401 [J].
Arbouet, A ;
Christofilos, D ;
Del Fatti, N ;
Vallée, F ;
Huntzinger, JR ;
Arnaud, L ;
Billaud, P ;
Broyer, M .
PHYSICAL REVIEW LETTERS, 2004, 93 (12) :127401-1
[8]   Observation of intrinsic size effects in the optical response of individual gold nanoparticles [J].
Berciaud, S ;
Cognet, L ;
Tamarat, P ;
Lounis, B .
NANO LETTERS, 2005, 5 (03) :515-518
[9]  
BEREZKINA SV, 2004, ZH TEKH FIZ, V74, P67
[10]   Optical Antennas [J].
Bharadwaj, Palash ;
Deutsch, Bradley ;
Novotny, Lukas .
ADVANCES IN OPTICS AND PHOTONICS, 2009, 1 (03) :438-483