1. Technical note: latent fingermarks, colloidal gold and multimetal deposition (MMD) 
Bertrand Schnetz, P Margot 
Forensic Science International 
Volume 118, Issue 1, Pages (April 2001)
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2. Fig. 1
Gold particles (∼30nm) prepared according to Saunders [1] under the TEM.
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3. Fig. 2
Homogeneous gold particles, size 14nm prepared according to Slot and Geuze [7].
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4. Fig. 3
Left side pH 3; right side pH 2.5 (fingermark after the colloidal gold treatment only, without further development with physical developer).
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5. Fig. 4
Left side 0.01% w/v; right side 0.005% w/v (fingermark after colloidal gold treatment only).
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6. Fig. 5
Left side 0.01% w/v; right side 0.02% w/v (fingermark after the colloidal gold treatment).
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7. Fig. 6
Effect of siliconized vessels on glass for the preparation of the gold solution: left, not siliconized; right, siliconized vessels.
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8. Fig. 7
On the left, distilled water was used; on the right, bidistilled water (fingermark after the colloidal gold treatment).
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9. Fig. 8
Example of a fingermark developed on a porous surface (here white paper) using the proposed optimised method (on the right) against the old (left).
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10. Fig. 9
Example of a fingermark detected on a non-porous surface (white polythene plastic bag) with the optimised technique on the right.
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11. Fig. 10
Common background noise observed after physical developer treatment on plastic using the traditional physical developer (left) or the optimised recipe (right).
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12. Fig. 11
Case example: successful detection of a mark on a Swiss banknote that resulted in an identification.
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