explosives detection; optical-related technology; laser wavelength; collector; substrate;ENHANCED RAMAN-SPECTROSCOPY; INDUCED BREAKDOWN SPECTROSCOPY; REMOTE DETECTION; SINGLE-MOLECULE; SCATTERING SERS; MINE DETECTION; HAND-HELD; SURFACE; TNT; NANOSTRUCTURES
To prevent tragic disasters caused by terror acts and warfare threats, security check personnel must be capable of discovering, distinguishing and eliminating the explosives at multiple circumstances. Standoff technology for the remote detection of explosives and their traces on contaminated surfaces is a research field that has become a heightened priority in recent years for homeland security and counter-terrorism applications. There has been a huge increase in research within this area, the improvement of standoff trace explosives detection by optical-related technology. This paper provides a consolidation of information relating to recent advances in several key problems of, without being limited to one specific research area or explosive type. Working laserwavelength of detection system is discussed. Generation and collection of explosives spectra signal are summarized. Techniques for analysing explosives spectra signal are summed up.