Electrochemical fabrication of decomposable three-dimensional Au nano-coral structure and its surface-enhanced Raman scattering (SERS)

Hu, Jun; Gan, Qi-Min; Zhang, Yuling; Ren, Bin; Li, Yongjun

doi:10.1016/j.matchemphys.2015.08.009

Cited by 6 publications

(2 citation statements)

References 63 publications

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“…39 Also, Hu et al showed that their three-dimensional Au nanocoral system had an EF close to 10 6 . 40 The final POF structure showed high detection uniformity. Figure 3b gives the SERS spectra collected from 12 random sites over the final sample surface spanning an area of 0.3 cm × 0.3 cm.…”

Section: Resultsmentioning

confidence: 94%

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Sensitive Surface-Enhanced Raman Scattering Detection Using On-Demand Postassembled Particle-on-Film Structure

Wang¹,

Zhu²,

Chen³

et al. 2017

ACS Appl. Mater. Interfaces

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Highly sensitive and low-cost surface-enhanced Raman scattering (SERS) substrates are essential for practical applications of SERS. In this work, we report an extremely simple but effective approach to achieve sensitive SERS detection of molecules (down to 10 M) by using a particle/molecule/film sandwich configuration. Compared to conventional SERS substrates which are preprepared to absorb analyte molecules for detection, the proposed sandwich configuration is achieved by postassembling a flexible transparent gel tape embedded with plasmonic nanoparticles onto an Au film decorated with to-be-detected analyte molecules. In such a configuration, the individual plasmonic gel tape and Au film have low or no SERS activity but the final assembled sandwich structure shows strong SERS signal due to the formation of numerous hot spots at the particle-film interface, where the analyte molecules themselves serve as both spacer and signal probes. Because of its simple configuration, we demonstrate that the proposed SERS substrate can be obtained over a large area with extremely low cost. Particularly, because of the on-demand nature and the flexibility, such a postassembly strategy provides an ideal solution to detect the pesticide residue on fruit surfaces with significantly enhanced sensitivity.

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Section: Resultsmentioning

confidence: 94%

“…For example, Gong et al have demonstrated an EF of 1.6 × 10 6 using the sensitive Q-tip based SERS substrate . Also, Hu et al showed that their three-dimensional Au nanocoral system had an EF close to 10 6 …”

Section: Resultsmentioning

confidence: 99%