Gunshot Residue Detecting Sensors for Crime Scene Analysis: Wearable Sensors Development

Studying gunshot residue in determining suicide and homicide, weapon type, munitions, distance and angle of shooting is very helpful, because gunshot residue can be dissipated on hands, faces, clothes and nearby objects from holes of a trigger and weapon. When a gunshot is fired, the burned and semi-burned compositions are dissipated in the gas phase in all directions. The parameters used include: bullet, bullet casing, the semi-burned powder, which due to the function of the weapon, are dissipated around from the holster’s holes in the form of gas and finally, the gunshot sound that can be heard by witnesses. Each of these elements can be helpful for the detection of a crime and criminal. Different instrumental methods can be used to collect gunshot residue and its analysis. Using sensors to investigate cases at a crime scene without the need for very expensive equipment, attracts attention. Recently applied reports concerning the use of sensors to analyze gunshot residue have been printed in various magazines which in this research will be studied. This research is intended to provide the stage to review and discuss gunshot residue and developed sensors to identify them.