Doped hydrophobic silica nano- and micro-particles as novel agents for developing latent fingerprints

被引：90

作者：

Theaker, Brenden J. ^{[1
]}

Hudson, Katherine E. ^{[1
]}

Rowell, Frederick J. ^{[1
]}

机构：

[1] Univ Sunderland, Sch Hlth Nat & Social Sci, Sunderland SR1 3SD, England

来源：

FORENSIC SCIENCE INTERNATIONAL | 2008年 / 174卷 / 01期

关键词：

forensic science; latent fingerprints; hydrophobic nano- and micro-particles; developing agents; fluorescent; coloured and magnetisable particles;

D O I：

10.1016/j.forsciint.2007.02.030

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：

Novel hydrophobic silica based particles have been developed to visualise latent fingerprints. The composition of the particles has been designed to maximise both hydrophobic and ionic interactions between a variety of coloured and fluorescent reporter molecules and the silicate backbone within the particles. The resulting doped particles retain the incorporated dyes with high affinity. In addition, a variety of sub-particles have also been embedded to again produce coloured or magnetisable hydrophobic particles. The particles can be harvested as nanoparticles or microparticles. The former are applied to latent fingerprints as an aqueous suspension and the latter as a dusting agent using brushes or a magnetic wand. Examples of the prints produced using these agents are given. The resulting prints have good definition. (c) 2007 Elsevier Ireland Ltd. All rights reserved.

引用

页码：26 / 34

页数：9

共 10 条

[1]

CHAMPOD C, 2004, FINGERPRINTS SKIN IM

[2]

*FOOD STAND AG EXP, 2002, REV SIL

[3] Magnetite nanoparticle dispersions stabilized with triblock copolymers [J].

Harris, LA ;

Goff, JD ;

Carmichael, AY ;

Riffle, JS ;

Harburn, JJ ;

St Pierre, TG ;

Saunders, M .

CHEMISTRY OF MATERIALS, 2003, 15 (06) :1367-1377

[4]

Menzel ER, 2000, J FORENSIC SCI, V45, P770

[5]

Menzel ER, 2000, J FORENSIC SCI, V45, P545

[6]

MENZEL ER, 2005, FUNCTIONALIZED EUROP, V55, P189

[7] Hydrophobicity and physical properties of TEOS based silica aerogels using phenyltriethoxysilane as a synthesis component [J].

Rao, AV ;

Kalesh, RR ;

Pajonk, GM .

JOURNAL OF MATERIALS SCIENCE, 2003, 38 (21) :4407-4413

[8]

*ROYAL SOC ROYAL A, 2004, POSS ADV HLTH ENV SA, pCH5

[9] Powder method for detecting latent fingerprints: a review [J].

Sodhi, GS ;

Kaur, J .

FORENSIC SCIENCE INTERNATIONAL, 2001, 120 (03) :172-176

[10] Development of organic dye-doped silica nanoparticles for bioanalysis and biosensors [J].

Tapec, R ;

Zhao, XJJ ;

Tan, WH .

JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 2002, 2 (3-4) :405-409

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