Absorption and plasmon resonance of bi-metallic core-shell nanoparticles on a dielectric substrate

Name: Absorption and plasmon resonance of bi-metallic core-shell nanoparticles on a dielectric substrate
Author: Avşar, D., Ertürk, H., Mengüç, Mustafa Pınar

İsim	Absorption and plasmon resonance of bi-metallic core-shell nanoparticles on a dielectric substrate
Yazar	Avşar, D., Ertürk, H., Mengüç, Mustafa Pınar
Basım Tarihi:	2019-06
Basım Yeri	- Begell House Inc.
Tür	Belge
Dil	İngilizce
Dijital	Evet
Yazma	Hayır
Kütüphane:	Özyeğin Üniversitesi
Demirbaş Numarası	978-156700479-3
Kayıt Numarası	bbeff9db-c792-41bc-89a9-13d07d137e61
Lokasyon	Mechanical Engineering
Tarih	2019-06
Örnek Metin	Numerical investigation of absorption efficiency profiles and localized surface plasmon resonance (LSPR) wavelengths are performed for metallic core-shell nanoparticles (NPs) placed over a BK7 glass substrate. Gold (Au) and silver (Ag) metallic components are used in two different coreshell structures. This numerical study is performed with vectorized version of the discrete dipole approximation with surface interactions (DDA-SI-v). Absorption enhancement and the hybrid modes of plasmon resonances of the core-shell structures are compared by using a metric that defines a size configuration. It is observed that small volume fraction of the core sizes results in shell domination over the plasmon response. Moreover, an additional study is conducted to discern the sensitivity of the refractive index of nanoparticles in different surrounding environments. With a selected core-shell size configuration of Ag-Au pairs, a significant absorption enhancement with a redshift of LSPR wavelength is observed for both Ag core-Au shell and Au core-Ag shell NPs. These findings show the possible targeted uses of metallic core-shell nanoparticles in local heating, bio-sensing, and material detection applications.
DOI	10.1615/RAD-19.440

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Absorption and plasmon resonance of bi-metallic core-shell nanoparticles on a dielectric substrate

Yazar Avşar, D., Ertürk, H., Mengüç, Mustafa Pınar

Basım Tarihi 2019-06

Basım Yeri - Begell House Inc.

Tür Belge

Dil İngilizce

Dijital Evet

Yazma Hayır

Kütüphane Özyeğin Üniversitesi

Demirbaş Numarası 978-156700479-3

Kayıt Numarası bbeff9db-c792-41bc-89a9-13d07d137e61

Lokasyon Mechanical Engineering

Tarih 2019-06

Örnek Metin Numerical investigation of absorption efficiency profiles and localized surface plasmon resonance (LSPR) wavelengths are performed for metallic core-shell nanoparticles (NPs) placed over a BK7 glass substrate. Gold (Au) and silver (Ag) metallic components are used in two different coreshell structures. This numerical study is performed with vectorized version of the discrete dipole approximation with surface interactions (DDA-SI-v). Absorption enhancement and the hybrid modes of plasmon resonances of the core-shell structures are compared by using a metric that defines a size configuration. It is observed that small volume fraction of the core sizes results in shell domination over the plasmon response. Moreover, an additional study is conducted to discern the sensitivity of the refractive index of nanoparticles in different surrounding environments. With a selected core-shell size configuration of Ag-Au pairs, a significant absorption enhancement with a redshift of LSPR wavelength is observed for both Ag core-Au shell and Au core-Ag shell NPs. These findings show the possible targeted uses of metallic core-shell nanoparticles in local heating, bio-sensing, and material detection applications.

DOI 10.1615/RAD-19.440