Jin Zhang, Hong Jiang, Bin Duan, Feng Liu. Differential Raman Spectroscopy Combined with Chemometrics for Lipstick Test[J]. Laser & Optoelectronics Progress, 2021, 58(24): 2430002
- Laser & Optoelectronics Progress
- Vol. 58, Issue 24, 2430002 (2021)
Fig. 1. Raman spectra and differential Raman spectra after processing of sample 24 under excitation light with central wavelengths of 784 nm and 785 nm
Fig. 2. Differential Raman spectrum of sample 7
Fig. 3. Raman spectra of samples from three different brands
Fig. 4. Raman spectra of three samples from same brand and different series
Fig. 5. Clustering dendrogram
Fig. 6. Gravel map drawn by agglomeration schedule
Fig. 7. Joint distribution diagram of samples
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Table 1. Results of system clustering
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Table 2. Function summaries of the first three characteristic functions
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