Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering

A highly ordered particle-in-bowl (PIB) nanostructure array is designed and fabricated to achieve large field enhancement for the surface-enhanced Raman scattering (SERS) application. This new type of PIB structure is composed of an Ag particle located at the bottom of an Au bowl, and the two are se...

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Main Authors: Li, Xianglin, Zhang, Yongzhe, Shen, Zexiang, Fan, Hong Jin
Other Authors: School of Electrical and Electronic Engineering
Format: Article
Language:English
Published: 2013
Online Access:https://hdl.handle.net/10356/96847
http://hdl.handle.net/10220/10387
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-968472020-03-07T12:37:08Z Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering Li, Xianglin Zhang, Yongzhe Shen, Zexiang Fan, Hong Jin School of Electrical and Electronic Engineering School of Physical and Mathematical Sciences Microelectronics Centre A highly ordered particle-in-bowl (PIB) nanostructure array is designed and fabricated to achieve large field enhancement for the surface-enhanced Raman scattering (SERS) application. This new type of PIB structure is composed of an Ag particle located at the bottom of an Au bowl, and the two are separated by a precisely controlled nanoscale dielectric layer. The fabrication of the PIB structure is based on the self-assembly of polystyrene spheres and atomic layer deposition (ALD), which allows good control of the metal particle size and gap distance, as well as large-scale ordering. Numerical simulation reveals a high enhancement of the local field at the nanogaps. The SERS performance of the PIB arrays, and the effects of the Ag particle size and the ALD dielectric layer thickness are characterized, results of which are in reasonable agreement with simulation. With Rhodmaine 6G as the probe molecule, the spatially averaged SERS enhancement factor is on the order of 3.8 × 107 and the local field enhancement from simulation can be up to 108. 2013-06-14T02:39:52Z 2019-12-06T19:35:42Z 2013-06-14T02:39:52Z 2019-12-06T19:35:42Z 2012 2012 Journal Article Li, X., Zhang, Y., Shen, Z., & Fan, H. J. (2012). Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering. Small, 8(16), 2548-2554. 1613-6810 https://hdl.handle.net/10356/96847 http://hdl.handle.net/10220/10387 10.1002/smll.201200576 en Small © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
institution Nanyang Technological University
building NTU Library
country Singapore
collection DR-NTU
language English
description A highly ordered particle-in-bowl (PIB) nanostructure array is designed and fabricated to achieve large field enhancement for the surface-enhanced Raman scattering (SERS) application. This new type of PIB structure is composed of an Ag particle located at the bottom of an Au bowl, and the two are separated by a precisely controlled nanoscale dielectric layer. The fabrication of the PIB structure is based on the self-assembly of polystyrene spheres and atomic layer deposition (ALD), which allows good control of the metal particle size and gap distance, as well as large-scale ordering. Numerical simulation reveals a high enhancement of the local field at the nanogaps. The SERS performance of the PIB arrays, and the effects of the Ag particle size and the ALD dielectric layer thickness are characterized, results of which are in reasonable agreement with simulation. With Rhodmaine 6G as the probe molecule, the spatially averaged SERS enhancement factor is on the order of 3.8 × 107 and the local field enhancement from simulation can be up to 108.
author2 School of Electrical and Electronic Engineering
author_facet School of Electrical and Electronic Engineering
Li, Xianglin
Zhang, Yongzhe
Shen, Zexiang
Fan, Hong Jin
format Article
author Li, Xianglin
Zhang, Yongzhe
Shen, Zexiang
Fan, Hong Jin
spellingShingle Li, Xianglin
Zhang, Yongzhe
Shen, Zexiang
Fan, Hong Jin
Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering
author_sort Li, Xianglin
title Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering
title_short Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering
title_full Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering
title_fullStr Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering
title_full_unstemmed Highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced Raman scattering
title_sort highly ordered arrays of particle-in-bowl plasmonic nanostructures for surface-enhanced raman scattering
publishDate 2013
url https://hdl.handle.net/10356/96847
http://hdl.handle.net/10220/10387
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