4.6 Article

A well-ordered flower-like gold nanostructure for integrated sensors via surface-enhanced Raman scattering

Journal

NANOTECHNOLOGY
Volume 20, Issue 23, Pages -

Publisher

IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/20/23/235302

Keywords

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Funding

  1. Korean Government (MEST) [ROA-2007-000-20028-0, ROA-2007-000-20127-0]
  2. Ministry of Education, Science & Technology (MoST), Republic of Korea [KIB 1] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
  3. National Research Foundation of Korea [2007-0056950, 과C6A1907, 2007-0056784] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

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A controllable flower-like Au nanostructure array for surface-enhanced Raman scattering (SERS) was fabricated using the combined technique of the top-down approach of conventional photolithography and the bottom-up approach of electrodeposition. Au nanostructures with a mean roughness ranging from 5.1 to 49.6 nm were obtained by adjusting electrodeposition time from 2 to 60 min. The rougher Au nanostructure provides higher SERS enhancement, while the highest SERS intensity obtained with the Au nanostructure is 29 times stronger than the lowest intensity. The SERS spectra of brilliant cresyl blue (BCB), benzenethiol (BT), adenine and DNA were observed from the Au nanostructure.

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