Capillary force-induced glue-free printing of Ag nanoparticle arrays for highly sensitive SERS substrates

Jaehong Lee, Jungmok Seo, Dayeong Kim, Sera Shin, Sanggeun Lee, Chandreswar Mahata, Hyo Sung Lee, Byung-Wook Min, Taeyoon Lee

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The fabrication of well-ordered metal nanoparticle structures onto a desired substrate can be effectively applied to several applications. In this work, well-ordered Ag nanoparticle line arrays were printed on the desired substrate without the use of glue materials. The success of the method relies on the assembly of Ag nanoparticles on the anisotropic buckling templates and a special transfer process where a small amount of water rather than glue materials is employed. The anisotropic buckling templates can be made to have various wavelengths by changing the degree of prestrain in the fabrication step. Ag nanoparticles assembled in the trough of the templates via dip coating were successfully transferred to a flat substrate which has hydrophilic surface due to capillary forces of water. The widths of the fabricated Ag nanoparticle line arrays were modulated according to the wavelengths of the templates. As a potential application, the Ag nanoparticle line arrays were used as SERS substrates for various probing molecules, and an excellent surface-enhanced Raman spectroscopy (SERS) performance was achieved with a detection limit of 10-12 M for Rhodamine 6G.

Original languageEnglish
Pages (from-to)9053-9060
Number of pages8
JournalACS Applied Materials and Interfaces
Volume6
Issue number12
DOIs
Publication statusPublished - 2014 Jun 25

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)

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