Journal
Applied Physics Express
Volume 8, Issue 1, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.7567/APEX.8.017001
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Funding
- Ministry of Science and Technology of Taiwan [103-2221-E-006-067-MY3]
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Au nanorod arrays were fabricated using a focused gallium (Ga) ion beam (fibAu_NRs) with various levels of Ga ion energy. The formation of AuGa2 on fibAu_NRs was controlled by adjusting the level of Ga ion energy and subsequent heat treatment in order to increase the effect of surface-enhanced Raman scattering (SERS). The SERS enhancement factor of the substrates was evaluated using crystal violet as a molecular test probe. The results show that low-density AuGa2 formation on fibAu_NRs increases the SERS effect, which is likely due to the interjunction charge transfer between Au and AuGa2. An optimized AuGa2 on fibAu_NRs was applied to the trace detection of melamine cyanurate in milk solution with high measured sensitivity. (C) 2015 The Japan Society of Applied Physics
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