Preparation of a low-cost fingerprint powder that harnesses white light to emit long-lived phosphorescence
File version
Author(s)
Clarke, Kristen T
Krosch, Matthew N
Gee, William J
Griffith University Author(s)
Primary Supervisor
Other Supervisors
Editor(s)
Date
Size
File type(s)
Location
License
Abstract
An inexpensive, commercially available doped strontium aluminate phosphor with long-lived afterglow has been prepared and assessed in the role of a luminescent fingerprint dusting powder. Blue, green, and aqua phosphorescence persisting for ca. 30 s was obtainable from treated fingermarks after charging the powders with the white light (400–700 nm) setting of a forensic light source. Imaging the phosphorescent afterglow enabled the elimination of background emissions encountered during latent fingermark examination. This was demonstrated by visualising fingermarks on substrates that possess inbuilt fluorescent security features and highly patterned substrate backgrounds, without any need for bespoke scientific equipment.
Journal Title
Science & Justice
Conference Title
Book Title
Edition
Volume
63
Issue
4
Thesis Type
Degree Program
School
Publisher link
Patent number
Funder(s)
Grant identifier(s)
Rights Statement
Rights Statement
Item Access Status
Note
Access the data
Related item(s)
Subject
Forensic science and management
Science & Technology
Life Sciences & Biomedicine
Medicine, Legal
Pathology
Legal Medicine
Persistent link to this record
Citation
Hopkins, SL; Clarke, KT; Krosch, MN; Gee, WJ, Preparation of a low-cost fingerprint powder that harnesses white light to emit long-lived phosphorescence, Science & Justice, 2023, 63 (4), pp. 500-508