As a materials characterization laboratory, our expertise usually lies in what cannot be seen by the unaided human eye. We are experts in investigating and identifying materials on both a nano- and macro-scale. Trace evidence can also play a role in accident investigations where contact or movement between objects will often leave residue that needs to be identified. Since most trace evidence is classified as microscopic, we are expert in selecting the most appropriate analytical technique suited to the sample material to identify and characterize it.