Splitting of Plasmon Frequency in Spherical Metal Nanoparticles in Anisotropic Medium

Мова статті: 
Англійська
Автор(и) статті: 
Margarita A. Razumova, Igor M. Dmitruk
Вихідні данні статті: 
Plasmonics, Volume 8, Issue 4, pp 1699-1706 (2013) [8 pages]
Назва журналу: 
Plasmonics
Рік публікації: 
2013
Volume: 
8
Issue: 
4
Ключові слова: 
surface plasmon, nanoparticle, field enhancement
Ключове слово: 
plasmon
Impact Factor: 
2.43
5-Year Impact Factor: 
2.99
The problem of plasmon resonance in spherical metal nanoparticles incorporated into 
an anisotropic dielectric medium is studied theoretically. Analytic solution is obtained 
in long-wavelength approximation for the case of weak uniaxial anisotropy. It is 
shown that medium anisotropy causes shifts of plasmon frequency from its position in 
an isotropic medium, which are different for plasmons with dipole momenta parallel 
and perpendicular to the axis of the medium. For the parallel and perpendicular 
orientations, which are determined by polarization of incident light, plasmon shifts 
differ by a factor of 4/3. Analytic expressions for field enhancement in the vicinity 
of a metal nanoparticle is obtained and analyzed for the cases of noble metals. The 
perspectives of experimental check of the obtained results and possible applications of 
plasmon anisotropy in plasmonics and sensorics are discussed.
Назва підрозділу: 
Кафедра математики, теоретичної фізики і комп-рних технологій
НДЧ
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Дизайн: Інститут високих технологій
Ivan Ivanov