Forensic Science

Brettell, Thomas A.; Rudin, Norah; Saferstein, Richard

doi:10.1021/ac0301447

Cited by 20 publications

(17 citation statements)

References 437 publications

(381 reference statements)

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“…Latent fingerprints present a considerable challenge in forensics, as invasive methods are often required for developing a print. Processing techniques for fingerprints include chemicals, powders, and/or various light sources (2–6), which may damage or destroy chemical associative trace evidence within the fingerprint. Thus, a noninvasive procedure that captures a digital image of the fingerprint, along with the chemical information within that fingerprint, adds significantly to the tools available to the forensic scientist.…”

Section: — Infrared Band Assignments For Spectrum () Of Fingerprint Rmentioning

confidence: 99%

Infrared Spectroscopic Imaging for Noninvasive Detection of Latent Fingerprints

Crane¹,

Bartick

Perlman

et al. 2006

Journal of Forensic Sciences

129

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The capability of Fourier transform infrared (FTIR) spectroscopic imaging to provide detailed images of unprocessed latent fingerprints while also preserving important trace evidence is demonstrated. Unprocessed fingerprints were developed on various porous and nonporous substrates. Data-processing methods used to extract the latent fingerprint ridge pattern from the background material included basic infrared spectroscopic band intensities, addition and subtraction of band intensity measurements, principal components analysis (PCA) and calculation of second derivative band intensities, as well as combinations of these various techniques. Additionally, trace evidence within the fingerprints was recovered and identified.

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Section: — Infrared Band Assignments For Spectrum () Of Fingerprint Rmentioning

confidence: 99%

Infrared Spectroscopic Imaging for Noninvasive Detection of Latent Fingerprints

Crane¹,

Bartick

Perlman

et al. 2006

Journal of Forensic Sciences

129

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“…The United States national database, combined DNA index system -CODIS, followed this success and was established in 1998. In recent years, STR DNA typing using capillary electrophoresis has become a thoroughly validated method for human identification [6][7][8][9]. Even a few copies of DNA molecules, taken from crime scenes or disaster areas, can be analyzed and assigned.…”

Section: General Aspectsmentioning

confidence: 99%

A high‐performance multilane microdevice system designed for the DNA forensics laboratory

et al. 2004

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We report preliminary testing of "GeneTrack", an instrument designed for the specific application of multiplexed short tandem repeat (STR) DNA analysis. The system supports a glass microdevice with 16 lanes of 20 cm effective length and double-T cross injectors. A high-speed galvanometer-scanned four-color detector was specially designed to accommodate the high elution rates on the microdevice. All aspects of the system were carefully matched to practical crime lab requirements for rapid reproducible analysis of crime-scene DNA evidence in conjunction with the United States DNA database (CODIS). Statistically significant studies demonstrate that an absolute, three-sigma, peak accuracy of 0.4-0.9 base pair (bp) can be achieved for the CODIS 13-locus multiplex, utilizing a single channel per sample. Only 0.5 microL of PCR product is needed per lane, a significant reduction in the consumption of costly chemicals in comparison to commercial capillary machines. The instrument is also designed to address problems in temperature-dependent decalibration and environmental sensitivity, which are weaknesses of the commercial capillary machines for the forensics application.

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“…In recent years, the detection of specific DNA sequences has become more important due to its widely applications in clinical diagnostics, early screening of human genetic diseases, biological warfare agents, and forensic testing [1][2][3][4][5]. Consequently, numerous analytical methods such as fluorescence [6,7], chemiluminescence [8][9][10], surface plasmon resonance [11,12], electrochemical techniques [13][14][15], and electrogenerated chemiluminescence (ECL) [16][17][18][19][20][21] have been developed for the detection of DNA sequences.…”

Section: Introductionmentioning

confidence: 99%