Abstract
Silver nanorod arrays deposited on a silicon wafer by employing the DC magnetron sputtering system have been investigated as reproducible and reusable SERS-active substrates. 2-Methylisoborneol (2-MIB) is used as a test molecule to exploit the uniformity, reproducibility and reusability of the fabricated substrates. SERS chips are found to be reusable by simple washing with DI water. Quantitative measurements show a good correlation between the intensity and molar concentration of 2-MIB. SERS chips can detect 2-MIB as low as 1 ppt, limit of detection. The present method is a single package of high SERS performance, large-scale production, ultrasensitive, uniform, reproducible and reusable.
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