Research Article
Label-Free Detection of Human Serum Using Surface-Enhanced Raman Spectroscopy Based on Highly Branched Gold Nanoparticle Substrates for Discrimination of Non-Small Cell Lung Cancer
Figure 2
(a) SEM images of the HGNPs substrate. (b) SERS mapping of 4-MBA measured at 1080 cm−1 using the HGNP substrate. The acquisition time was 10 s, and the laser power was 5 mW.
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