Xue-jing DAI, Cheng-qing TANG, Meng WANG, Lin-dong TONG. Study on the Fluorescence Spectral Characteristics of Vegetable Powders and Their Application in Development of Latent Fingerprints[J]. Spectroscopy and Spectral Analysis, 2022, 42(1): 158
- Spectroscopy and Spectral Analysis
- Vol. 42, Issue 1, 158 (2022)
Fig. 1. Excitation spectrum (a), and emission spectrum (b) of three kinds of vegetable powders
Fig. 2. Fluorescence comparison of latent fingerprints on glass developed with broccoli powders and conventional luminescent powders
(a, a'): Conventional fluorescent powders; (b, b'): Broccoli powders
(a, a'): Conventional fluorescent powders; (b, b'): Broccoli powders
Fig. 3. Latent fingerprints photographed with optical methods
(a, a'): Smooth floor; (b, b'): Semi-smooth card; (c, c'): Bank card
(a, a'): Smooth floor; (b, b'): Semi-smooth card; (c, c'): Bank card
Fig. 4. Latent fingerprints developed with broccoli powders on non porous substrates
(a, a'): Wood floor; (b, b'): Campus card; (c, c'): Aluminum foils; (d, d'): Plastic card; (e, e'): Cigarette case;(f, f'): ID card; (g, g'): Charger surface; (h, h'): Ceramic tiles; (i, i'): Plastic bottle cap
(a, a'): Wood floor; (b, b'): Campus card; (c, c'): Aluminum foils; (d, d'): Plastic card; (e, e'): Cigarette case;(f, f'): ID card; (g, g'): Charger surface; (h, h'): Ceramic tiles; (i, i'): Plastic bottle cap
Fig. 5. Latent fingerprints developed with broccoli powders on porous substrates
(a, a'): RMB; (b, b'): Wrapping paper; (c, c'): A4 paper; (d, d'): Paper magazine
(a, a'): RMB; (b, b'): Wrapping paper; (c, c'): A4 paper; (d, d'): Paper magazine
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