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Updated: Mar 11, 2026

Fabrication and Implementation of a Reference-Free Traction Force Microscopy Platform

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Development of a Mobile Toolmark Characterization/Comparison System.

Scott Chumbley¹, Song Zhang¹, Max Morris¹

¹Ames Laboratory, Iowa State University, 2220 Hoover, Ames, IA, 50011.

Journal of Forensic Sciences

|November 20, 2016

Summary

This summary is machine-generated.

Forensic examiners can now measure toolmark topography and perform objective statistical comparisons using a new 3D optical profilometer and MANTIS software. This system enhances toolmark analysis for more accurate forensic investigations.

Keywords:

forensic science optical profilometer portable prototype quantitative measurements statistical comparisons toolmarks

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Spotting Cheetahs: Identifying Individuals by Their Footprints

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Published on: May 1, 2016

Area of Science:

Forensic Science
Metrology
Computer Science

Background:

Traditional toolmark analysis relies on subjective comparisons.
Advancements in imaging and measurement technologies offer potential for objective analysis.
Existing methods lack standardized quantitative comparison capabilities.

Purpose of the Study:

To develop and evaluate a prototype system for objective toolmark topography measurement and comparison.
To provide forensic examiners with an easy-to-use software interface for quantitative analysis.
To assess the system's effectiveness on various types of laboratory-produced toolmarks.

Main Methods:

Utilized a portable 3D optical profilometer for data acquisition.
Developed the Mark and Tool Inspection Suite (MANTIS) software for data comparison.
Tested the system on diverse toolmarks: striated, impression, rifling, and cut marks.

Main Results:

The system enables visual comparison akin to a comparison microscope.
Quantitative data allows for objective statistical comparisons of toolmark files.
Successful application demonstrated on various laboratory-produced mark types.

Conclusions:

The developed system shows significant potential for enhancing forensic toolmark comparisons.
Integration of 3D optical profilometry and statistical algorithms offers objective analysis.
This technology can aid examiners in achieving more reliable and reproducible results.