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Free keywords:
nanodimer, self-assembly, surface-enhanced Raman spectroscopy, ultrasonic-assisted synthesis, Aggregation
Abstract:
Considerable research efforts have been devoted to surface-enhanced Raman spectroscopy (SERS), due to its excellent performance in biosensing and imaging. Here, we present a novel and facile strategy for the fabrication of well-defined and uniform nanodimers as SERS substrates. By the assistance of ultrasound, the violent polyol process for particle generation becomes controllable, enabling the self-assembly of nanostars to nanodimers. Moreover, the aggregation of nanodimers can be easily tuned by post-ultrasonic treatment, which gives a sensitive substrate for SERS.
