综上，该设备广泛应用于文件真伪鉴别、微量物证检验、毒品初筛等场景，可实现痕量、复杂物证的无损精准分析，丰富鉴定技术维度，规范检验流程，为司法鉴定提供客观、科学的分子层面依据，助力案件公正审理，是刑侦技术与司法鉴定领域不可或缺的专业化核心分析装备。
Application Introduction of Micro-Raman Spectroscopy Analysis System in Criminal Investigation Technology and Forensic Identification
The Micro-Raman Spectroscopy Analysis System (Micro-Area Trace Substance Spectral Identification Workstation) is a core analytical equipment in the fields of criminal investigation technology and forensic identification. Integrating high-precision microscopy, confocal Raman spectroscopy and high-performance detection technology, it can perform non-destructive and rapid molecular structure analysis of samples at the micrometer scale. By obtaining unique "molecular fingerprint" spectra, it provides scientific basis for special document identification, tampered (damaged) document identification, ink-seal sequence identification, as well as species identification and comparison of trace physical evidence such as fibers, paints and explosives, solving the problems of complex and trace physical evidence inspection and greatly improving the accuracy and scientificity of forensic identification.
The core performance of the equipment is accurately adapted to the needs of criminal investigation and forensic identification, helping to upgrade identification technology: confocal micro-area analysis can capture micrometer-level trace physical evidence, suitable for the inspection of trace samples such as single fibers and pigment particles; multi-modal spectral analysis is compatible with multiple detection modes to meet the needs of complex physical evidence inspection; the functions specially designed for document inspection can realize ink distinction, ink-seal sequence identification and tampered document identification, accurately solving the difficulties in document-based identification; the non-destructive detection mode avoids sample damage, ensures the integrity of physical evidence, and meets the rigorous requirements of forensic identification; intelligent spectral library retrieval and stable spectral output ensure the repeatability and traceability of inspection results.
Combined with criminal investigation practice and forensic identification cases, its application value is prominent: Case 1, in a document tampering case, the involved contract had traces of handwriting alteration and addition. With the help of this system, the differences in ink composition between the altered parts and the original handwriting were analyzed to accurately identify the tampering traces. At the same time, through ink-seal sequence analysis, the sequence of formation of the seal and handwriting was determined, providing key scientific basis for the identification of document authenticity in forensic identification. Case 2, in a traffic accident hit-and-run case, trace paint fragments were extracted from the scene. The system analyzed their molecular structure through Raman spectroscopy, which was consistent with the spectral comparison of the paint of the suspected vehicle, establishing a "vehicle-case" association and providing core technical support for the identification of the involved vehicle and the confirmation of the hit-and-run behavior in forensic identification.
In summary, this equipment is widely used in scenarios such as document authenticity identification, trace physical evidence inspection and drug preliminary screening. It can realize non-destructive and accurate analysis of trace and complex physical evidence, enrich the dimensions of identification technology, standardize the inspection process, provide objective and scientific molecular-level basis for forensic identification, and assist in the fair trial of cases. It is an indispensable professional core analytical equipment in the fields of criminal investigation technology and forensic identification.