共 50 条
Differentiation of black writing ink on paper using luminescence lifetime by time-resolved luminescence spectroscopy
被引:4
作者:
Suzuki, Mototsugu
[1
]
Akiba, Norimitsu
[2
]
Kurosawa, Kenji
[2
]
Akao, Yoshinori
[2
]
Higashikawa, Yoshiyasu
[2
]
机构:
[1] Metropolitan Police Dept, Forens Sci Lab, Chiyoda Ku, 2-1-1 Kasumigaseki, Tokyo 1008929, Japan
[2] Natl Res Inst Police Sci, 6-3-1 Kashiwanoha, Kashiwa, Chiba 2770882, Japan
关键词:
Forensic science;
Luminescence lifetime;
Pulse laser;
Writing ink;
Document examination;
BALLPOINT PEN INKS;
INFRARED LUMINESCENCE;
RAMAN-SPECTROSCOPY;
QUESTIONED DOCUMENTS;
MASS-SPECTROMETRY;
FORENSIC ANALYSIS;
LASER;
SCATTERING;
SPECTRA;
DYES;
D O I:
10.1016/j.forsciint.2017.09.003
中图分类号:
DF [法律];
D9 [法律];
R [医药、卫生];
学科分类号:
0301 ;
10 ;
摘要:
The time-resolved luminescence spectra and the lifetimes of eighteen black writing inks were measured to differentiate pen ink on altered documents. The spectra and lifetimes depended on the samples. About half of the samples only exhibited short-lived luminescence components on the nanosecond time scale. On the other hand, the other samples exhibited short-and long-lived components on the microsecond time scale. The samples could be classified into fifteen groups based on the luminescence spectra and dynamics. Therefore, luminescence lifetime can be used for the differentiation of writing inks, and luminescence lifetime imaging can be applied for the examination of altered documents. (C) 2017 Elsevier B.V. All rights reserved.
引用
收藏
页码:281 / 287
页数:7
相关论文
共 50 条