Articles Published by NIJ

NIJ-funded researchers create unprecedented gunshot residue dataset to develop a quick, dual-detection method for gunshot residue detection.

“Wherever he steps, whatever he touches, whatever he leaves, even unconsciously, will serve as a silent witness against him.” Edmond Locard (1877-1966), forensic science pioneer

Nanoparticles and other subvisible particles potentially present in nearly all trace evidence are often overlooked in forensic investigations. NIJ-supported researchers have characterized several types of particles and developed detection methods.

Fiber evidence has long been an important part of criminal cases, for it can associate a suspect with a crime scene. This project details new analytical procedures that allow fiber comparisons that are more detailed than standard forensic practices.

Two researchers with a long record of research into the forensic value of very small particle populations examined cell phones, handguns, drug packaging, and ski masks from the San Diego County Sheriff’s Office to determine if such particles can make phys

The ability of Laser Induced Breakdown Spectroscopy (LIBS) instruments to detect practically the entire periodic table of elements very quickly and without the complexity of other systems makes them an economic choice for forensic analysis.

Criminals track dust particles to and from virtually every crime scene, but particles on a suspect’s shoes are seldom used as evidence linking the accused to the crime. In this NIJ-supported project, researchers assert that investigators can use small par

After analyzing how ignitable liquids break down because of weathering and biological degradation in the aftermath of a fire, researchers have provided new data to fire investigators and crime labs.

By touching a cell phone, car keys, or even a pen, you are leaving behind a chemical signature that can reveal much about how you live your daily life.