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Chan TY, Liu TY, Wang KS, Tsai KT, Chen ZX, Chang YC, Tseng YQ, Wang CH, Wang JK, Wang YL. SERS Detection of Biomolecules by Highly Sensitive and Reproducible Raman-Enhancing Nanoparticle Array. Nanoscale Res Lett 2017; 12:344. [PMID: 28494572 PMCID: PMC5423882 DOI: 10.1186/s11671-017-2121-x] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2016] [Accepted: 05/02/2017] [Indexed: 05/11/2023]
Abstract
This paper describes the preparation of nanoarrays composed of silver nanoparticles (AgNPs: 20-50 nm) for use as surface-enhanced Raman scattering (SERS) substrates. The AgNPs were grown on porous anodic aluminum oxide (AAO) templates by electrochemical plating, and the inter-channel gap of AAO channels is between 10 and 20 nm. The size and interparticle gap of silver particles were adjusted in order to achieve optimal SERS signals and characterized by scanning electron microscopy, atomic force microscopy, and Raman spectroscopy. The fluctuation of SERS intensity is about 10-20% when measuring adenine solutions, showing a great reproducible SERS sensing. The nanoparticle arrays offer a large potential for practical applications as shown by the SERS-based quantitative detection and differentiation of adenine (A), thymine (T), cytosine (C), guanine (G), β-carotene, and malachite green. The respective detection limits are <1 ppb for adenine and <0.63 ppm for β-carotene and malachite green, respectively. Uniform and reproducible Raman enhancement enabled by Ag nanoparticle array embedded in anodic aluminum oxide differentiates and helps quantify DNA canonical nucleobases (adenine, thymine, cytosine, and guanine).
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Affiliation(s)
- Tzu-Yi Chan
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301 Taiwan
| | - Ting-Yu Liu
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301 Taiwan
| | - Kuan-Syun Wang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301 Taiwan
| | - Kun-Tong Tsai
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617 Taiwan
| | - Zhi-Xin Chen
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617 Taiwan
| | - Yu-Chi Chang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617 Taiwan
| | - Yi-Qun Tseng
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301 Taiwan
| | - Chih-Hao Wang
- Department of Materials Engineering, Ming Chi University of Technology, New Taipei City, 24301 Taiwan
| | - Juen-Kai Wang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617 Taiwan
- Center for Condensed Matter Sciences, National Taiwan University, Taipei, 10617 Taiwan
| | - Yuh-Lin Wang
- Institute of Atomic and Molecular Sciences, Academia Sinica, Taipei, 10617 Taiwan
- Department of Physics, National Taiwan University, Taipei, 10617 Taiwan
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Chen JS, Liu TY, Tsou HM, Ting YS, Tseng YQ, Wang CH. Biopolymer brushes grown on PDMS contact lenses by in situ atmospheric plasma-induced polymerization. J Polym Res 2017. [DOI: 10.1007/s10965-017-1230-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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