Nanoimprinted Patterned Pillar Substrates for Surface-Enhanced Raman Scattering Applications

Chen, J. H. and Li, Y. Y. and Huang, K. and Wang, P. X. and He, L. L. and Carter, K. R. and Nugen, S. R.. (2015) Nanoimprinted Patterned Pillar Substrates for Surface-Enhanced Raman Scattering Applications. Acs Applied Materials & Interfaces, 7 (39). pp. 22106-22113.

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Abstract

A pragmatic method to deposit silver nanoparticles on polydopamine-coated nanoimprinted pillars for use as surface-enhanced Raman scattering (SERS) substrates was developed. Pillar arrays consisting of poly(methyl methacrylate) (PMMA) that ranged in diameter from 300 to 500 nm were fabricated using nanoimprint lithography. The arrays had periodicities from 0.6 to 4.0 mu m. A polydopamine layer was coated on the pillars in order to facilitate the reduction of silver ions to create silver nucleation sites during the electroless deposition of sliver nanoparticles. The size and density of silver nanoparticles were controlled by adjusting the growth time for the optimization of the SERS performance. The size of the surface-adhered nanoparticles ranged between 75 and 175 nm, and the average particle density was similar to 30 particles per mu m(2). These functionalized arrays had a high sensitivity and excellent signal reproducibility for the SERS-based detection of 4-methoxybenzoic acid. The substrates were also able to allow the SERS-based differentiation of three types of bacteriophages (lambda, T3, and T7).

Item Type: Article
Additional Information: ISI Document Delivery No.: CT2JXTimes Cited: 0Cited Reference Count: 54Chen, Juhong Li, Yinyong Huang, Kang Wang, Panxue He, Lili Carter, Kenneth R. Nugen, Sam R.UMass Center for Hierarchical Manufacturing (CHM), a NSF Nanoscale Science and Engineering Center CMMI-1025020The authors acknowledge financial support from the UMass Center for Hierarchical Manufacturing (CHM), a NSF Nanoscale Science and Engineering Center (CMMI-1025020). We also thank Dr. Steven Sandler in the Department of Microbiology at the University of Massachusetts, Amherst, for providing the bacteriophage lambda.08Amer chemical socWashington
Uncontrolled Keywords: Materials Science
Collections: Nanomanufacturing Research Collection > Nanomanufacturing Nanoscale Science and Engineering Centers > Center for Hierarchical Manufacturing
Depositing User: Robert Stevens
Date Deposited: 12 Nov 2015 18:38
Last Modified: 12 Nov 2015 18:38
URI: http://eprints.internano.org/id/eprint/2314

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