Traces that bind: Composition, analysis and casework perspectives on adhesive tape evidence.

Area of Science:

• Forensic Science
• Materials Analysis
• Trace Evidence Examination

Background:

• Adhesive tapes are common trace evidence in criminal cases like homicides and bombings.
• Their unique properties allow for linking crime scenes, suspects, and victims.
• Forensic examination of adhesive tapes is vital for criminal investigations.

Purpose of the Study:

• To provide a comprehensive review of current forensic methodologies for adhesive tape analysis.
• To highlight recent advancements in physical fit analysis and analytical techniques.
• To discuss the challenges and future directions in the field.

Main Methods:

• Physical fit analysis for tape reconstruction.
• Spectroscopic, mass spectrometric, and elemental analysis of adhesive and backing materials.
• Evaluation of environmental aging and manufacturing variations' impact on tape characteristics.

Main Results:

• Detailed characterization of adhesive tape composition and structure.
• Identification and discrimination of tape fragments in post-blast scenarios.
• Assessment of factors influencing tape evidence interpretation, such as substrates and chemicals.

Conclusions:

• Adhesive tape analysis is a significant and developing area within forensic trace evidence.
• Current analytical approaches offer robust methods for tape examination.
• Future research should focus on integrating advanced tools like chemometrics for enhanced analysis.