Visualizing latent fingerprints by electrodeposition of metal nanoparticles

Qin, G.; Zhang, Meiqin; Zhang, Yang; Zhu, Yu; Liu, Shouliang; Wu, Wenjin; Zhang, Xueji

doi:10.1016/j.jelechem.2013.01.016

Cited by 42 publications

(24 citation statements)

References 26 publications

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“…Fingermark developed with the electrodeposition of metal nanoparticles method . [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Physicochemical Methodsmentioning

confidence: 99%

“…In both instances, development of fingermarks was successful indicating that there are other factors during the firing process that affect the fingermark recovery, such as the blowback of the hot gasses produced from the burning of the propellant powder, or some by-products of the propellants that adhere to the surface of the cartridge and hinder visualization. Although Girelli Successful enhancement for eccrine and sebaceous fingermarks and in many metallic surfaces (63) the subject as close to real crime scene samples as possible and included many cartridge cases (100), the small number of donors (2) makes the drawing of conclusions difficult. Nizam et al (50) used electrolysis only, which successfully developed fingermarks in 1 of 4, spent cartridge cases, and used only one donor.…”

Section: Electrodeposition Of Metal Nanoparticlesmentioning

confidence: 99%

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Detection of Fingermarks—Applicability to Metallic Surfaces: A Literature Review

Christofidis

Morrissey

Birkett

2018

Journal of Forensic Sciences

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There are many different fingermark visualization techniques available, and the choice of methodology employed may be dependent on the surface type. This comprehensive review of the scientific literature evaluates the methodologies of fingermark enhancement methods that are applicable to metallic surfaces; optical, physical, chemical, and physicochemical methods are critically discussed. Methods that are currently used and those that have the potential to reduce the cost and time required to process evidence and increase the recovery rates are considered and are assessed against the Centre for Applied Science and Technology (CAST) and the International Fingerprint Research Group (IFRG) guidelines. The use of chemical imaging techniques in particular has increased the potential to recover fingermarks of sufficient quality for identification purposes. Presently, there appears to be a lack of detailed research pertaining to validation and thorough casework studies for fingermark enhancement techniques. Further studies incorporating these guidelines are recommended.KEYWORDS: forensic science, fingermarks, fingerprints, enhancement techniques, metallic surfaces, latent fingermarks Fingermarks are considered one of the most valuable types of physical evidence recovered from a crime scene. Fingermark casework is still the most common casework for forensic scientists despite the increase in use of DNA (1) to identify/exonerate suspects via bodily fluids (2). The ridge patterns found in fingermarks are permanent and can be used to individualize or exclude suspects from an investigation.Detection of fingermarks on metallic surfaces will be dependent upon the compounds remaining from the fingermark residue. Several detailed reviews have already been published on fingermark composition, but none have focused on fingermarks deposited on metallic surfaces (3,4).Generally, there are two types of fingermarks found at crime scenes: visible fingermarks, usually formed by fingers contaminated by a substance such as oil, fruit, grease, paint or blood, which are deposited on a surface; and latent fingermarks, which are invisible to the naked eye and are the most abundant type of fingermarks at crime scenes. Metallic surfaces are also commonly encountered in crime scenes and are ubiquitous in the environment. Surfaces such as the door of a car, objects like handles, weapons, and tools are usually made of steel. Cartridge cases are frequently recovered from crime scenes and are usually made of brass or nickel (5). There are a number of different techniques that can be applied to a surface to visualize latent fingermarks. The selection of a suitable technique depends on different factors, such as the expected composition of a fingermark, the ability of the chosen technique to be used in tandem with other techniques, and the nature of the substrate. In this review, the focus will be on fingermarks deposited on metallic surfaces, and the optical, physical, chemical, and physicochemical visualization techniques that can be used ...

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“…Fingermark developed with the electrodeposition of metal nanoparticles method . [Color figure can be viewed at wileyonlinelibrary.com]…”

Section: Physicochemical Methodsmentioning

confidence: 99%

Section: Electrodeposition Of Metal Nanoparticlesmentioning

confidence: 99%

Detection of Fingermarks—Applicability to Metallic Surfaces: A Literature Review

Christofidis

Morrissey

Birkett

2018

Journal of Forensic Sciences

View full text Add to dashboard Cite

show abstract

“…These approaches contain destructive developments (aqueous electrolyte immersion [8] and fluorescence [9]) and non-destructive developments (optical reflection [10], metal sputtering [11], scanning Kelvin probe [12,13], infrared spectroscopic imaging [14], electrochemistry [6,[15][16][17][18][19][20][21]). The destructive developments are helpful for high contrast visualization of LFMs but not recommended because they would disturb the subsequent DNA analysis by decomposing DNA under the circumstance of UV light or highly acidic/alkaline electrolyte.…”

Section: Introductionmentioning

confidence: 99%

“…These electrochemical methods contain electrochemistry coupled with surface plasmon resonance (E-SPR) [15], electrochemiluminescence [17], electropolymerization [6,16,22,23] and electrochemical deposition [18][19][20][21]. The high visualization quality of electrochemistry enhancement is due to the different reactive behaviours (the SPR signal and the polymerization or deposition of electrochemically active species) between the insulating LFMs ridges parts (fatty acids) and the conductive free parts (LFMs valleys and the free parts of the substrate).…”

Section: Introductionmentioning

confidence: 99%

“…The LFMs are enhanced negatively owing to the electrochemically active materials can only be reduced or electropolymerized on the free parts of the surface. We first introduced the enhancement strategy of LFMs on several conducting surfaces using electrochemical deposition of gold and silver nanoparticles in aqueous solution [18]. Later, we have further extended this visualizing method by depositing other materials such as copper [21], graphene [20] and Prussian blue [19].…”

Section: Introductionmentioning

confidence: 99%

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