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...
Saved in:
Main Authors: | , , , |
---|---|
Other Authors: | |
Format: | Article |
Language: | English |
Published: |
2013
|
Online Access: | https://hdl.handle.net/10356/96847 http://hdl.handle.net/10220/10387 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
Institution: | Nanyang Technological University |
Language: | English |
id |
sg-ntu-dr.10356-96847 |
---|---|
record_format |
dspace |
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 |
_version_ |
1681046450708938752 |