Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering

Surface-enhanced Raman scattering (SERS) spectroscopy has attracted a lot of attention over the past 30 years. Due to its extreme sensitivity and label-free detection capability, it has shown great potential in areas such as analytical chemistry, biochemistry, and environmental science. However, the...

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Main Authors: Chu-Yu Huang, Ming-Shiuan Tsai
Format: Article
Language:English
Published: MDPI AG 2019-04-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/9/8/1636
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author Chu-Yu Huang
Ming-Shiuan Tsai
author_facet Chu-Yu Huang
Ming-Shiuan Tsai
author_sort Chu-Yu Huang
collection DOAJ
description Surface-enhanced Raman scattering (SERS) spectroscopy has attracted a lot of attention over the past 30 years. Due to its extreme sensitivity and label-free detection capability, it has shown great potential in areas such as analytical chemistry, biochemistry, and environmental science. However, the major challenge is to manufacture large-scale highly SERS active substrates with high controllability, good reproducibility, and low cost. In this study, we report a novel method to fabricate uniform silver nanoparticle arrays with tunable particle sizes and interparticle gaps. Using hot embossing and sputtering techniques, we were able to batch produce the silver nanoparticle arrays SERS active substrate with consistent quality and low cost. We showed that the proposed SERS active substrate has good uniformity and high reproducibility. Experimental results show that the SERS enhancement factor is affected by silver nanoparticles size and interparticle gaps. Furthermore, the enhancement factor of the SERS signal obtained from Rhodamine 6G (R6G) probe molecules was as high as 1.12 &#215; 10<sup>7</sup>. Therefore, the developed method is very promising for use in many SERS applications.
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spelling doaj.art-dc620419c0f04a6ab5f84ff54c49033e2022-12-21T23:56:06ZengMDPI AGApplied Sciences2076-34172019-04-0198163610.3390/app9081636app9081636Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman ScatteringChu-Yu Huang0Ming-Shiuan Tsai1Department of Mechanical Engineering, National Chung Hsing University, Taichung 402, TaiwanDepartment of Mechanical Engineering, National Chung Hsing University, Taichung 402, TaiwanSurface-enhanced Raman scattering (SERS) spectroscopy has attracted a lot of attention over the past 30 years. Due to its extreme sensitivity and label-free detection capability, it has shown great potential in areas such as analytical chemistry, biochemistry, and environmental science. However, the major challenge is to manufacture large-scale highly SERS active substrates with high controllability, good reproducibility, and low cost. In this study, we report a novel method to fabricate uniform silver nanoparticle arrays with tunable particle sizes and interparticle gaps. Using hot embossing and sputtering techniques, we were able to batch produce the silver nanoparticle arrays SERS active substrate with consistent quality and low cost. We showed that the proposed SERS active substrate has good uniformity and high reproducibility. Experimental results show that the SERS enhancement factor is affected by silver nanoparticles size and interparticle gaps. Furthermore, the enhancement factor of the SERS signal obtained from Rhodamine 6G (R6G) probe molecules was as high as 1.12 &#215; 10<sup>7</sup>. Therefore, the developed method is very promising for use in many SERS applications.https://www.mdpi.com/2076-3417/9/8/1636SERSSurface-enhanced Raman scatteringnanosphere arraynanocone arrayhot embossingnanoimprinting
spellingShingle Chu-Yu Huang
Ming-Shiuan Tsai
Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
Applied Sciences
SERS
Surface-enhanced Raman scattering
nanosphere array
nanocone array
hot embossing
nanoimprinting
title Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
title_full Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
title_fullStr Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
title_full_unstemmed Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
title_short Tunable Silver Nanoparticle Arrays by Hot Embossing and Sputter Deposition for Surface-Enhanced Raman Scattering
title_sort tunable silver nanoparticle arrays by hot embossing and sputter deposition for surface enhanced raman scattering
topic SERS
Surface-enhanced Raman scattering
nanosphere array
nanocone array
hot embossing
nanoimprinting
url https://www.mdpi.com/2076-3417/9/8/1636
work_keys_str_mv AT chuyuhuang tunablesilvernanoparticlearraysbyhotembossingandsputterdepositionforsurfaceenhancedramanscattering
AT mingshiuantsai tunablesilvernanoparticlearraysbyhotembossingandsputterdepositionforsurfaceenhancedramanscattering