Absorption suppression of silver nanoparticles in the presence of an AFM tip: A harmonic oscillator model

Name: Absorption suppression of silver nanoparticles in the presence of an AFM tip: A harmonic oscillator model
Author: Huda, G. M., Mengüç, Mustafa Pınar, Hastings, J. T.

İsim	Absorption suppression of silver nanoparticles in the presence of an AFM tip: A harmonic oscillator model
Yazar	Huda, G. M., Mengüç, Mustafa Pınar, Hastings, J. T.
Basım Tarihi:	2012
Basım Yeri	- AIP
Konu	Plasmonics, Absorption, Finite element method, Evanescent wave, Harmonic oscillator, AFM
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	0094-243X
Kayıt Numarası	57abf5d1-4fa4-4148-b243-0f4b8c963f55
Lokasyon	Mechanical Engineering
Tarih	2012
Notlar	Due to copyright restrictions, the access to the full text of this article is only available via subscription.
Örnek Metin	We numerically calculated the optical absorption of silver nanoparticles (AgNP) in the presence of metallic and dielectric AFM probes, illuminated by transverse magnetic (TM) polarized, total internal reflected waves. Nanoscale probes localize and enhance the field between the apex of the tip and the particle. However, such probes can actually suppress the optical absorption of the AgNP. To better understand this phenomenon, we fitted the numerical absorption data with the equation of a driven damped harmonic oscillator (HO), and we found that the AFM tip modifies both the driving force and increases the overall damping of the oscillator by introducing an additional radiative decay path. For a 50 nm diameter AgNP the introduction of either a metallic or dielectric AFM probe suppresses absorption.
DOI	10.1063/1.4750120
Cilt	1475

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Absorption suppression of silver nanoparticles in the presence of an AFM tip: A harmonic oscillator model

Yazar Huda, G. M., Mengüç, Mustafa Pınar, Hastings, J. T.

Basım Tarihi 2012

Basım Yeri - AIP

Konu Plasmonics, Absorption, Finite element method, Evanescent wave, Harmonic oscillator, AFM

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 0094-243X

Kayıt Numarası 57abf5d1-4fa4-4148-b243-0f4b8c963f55

Lokasyon Mechanical Engineering

Tarih 2012

Notlar Due to copyright restrictions, the access to the full text of this article is only available via subscription.

Örnek Metin We numerically calculated the optical absorption of silver nanoparticles (AgNP) in the presence of metallic and dielectric AFM probes, illuminated by transverse magnetic (TM) polarized, total internal reflected waves. Nanoscale probes localize and enhance the field between the apex of the tip and the particle. However, such probes can actually suppress the optical absorption of the AgNP. To better understand this phenomenon, we fitted the numerical absorption data with the equation of a driven damped harmonic oscillator (HO), and we found that the AFM tip modifies both the driving force and increases the overall damping of the oscillator by introducing an additional radiative decay path. For a 50 nm diameter AgNP the introduction of either a metallic or dielectric AFM probe suppresses absorption.

DOI 10.1063/1.4750120

Cilt 1475