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科学捜査
確実に証拠を集める必要がある法科学者には、正確で高品質、精密で再現性の高い顕微鏡とイメージングシステムが必要です。 ライカマイクロシステムズは、測定・分析・結果の文書化に必要な、ルーチン機器から、フルオートの高性能機器まで全てサポートしています。
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ライカマイクロシステムズのサイエンスラボポータル は、顕微鏡をテーマとする科学研究や記事を提供しています。 コンテンツは、日常業務や実験で、ビギナーから経験豊富な専門家、科学者まで幅広くサポートします。
Topographic Analysis of Firing Pin Impressions on Cartridge Cases
The analysis of fired cartridges for primer cup morphology and flattening and firing pin impression (crater) depth using topographic data is discussed in this article. Topographical analysis of the primer cup of both fired and unfired ammunition was done. The ammunition was fired from revolvers in 3 orientations: horizontal, vertically upwards, and vertically downwards. The degree in variability of flattening on the primer cup, of depth of the firing pin impression, and the discernibility of individual characteristics in the three firing conditions were determined.
Digital Microscopy in Forensics
Forensic experts work with a broad range of microscopes to examine evidence from firearms and tool marks, documents, forensic or legal medicine, hair and fibers as well as glass and paint. Digital microscopes support many of these investigations, in which the materials can be very different in character. This image gallery shows examples what digital microscopy can reveal in typical forensics’ samples.
125 Years of Comparison Microscopy
To be able to optically compare two objects with scientific accuracy, it must be possible to view them at the same time. This is particularly true for comparing small objects that can only be visualized with the aid of an optical magnification system. If you only have one microscope and have to look at the objects alternately, you need an excellent memory and can never rule out the risk of judgment errors, especially when examining objects with only minor differences in structure, color or profile.
Every Clue Counts – Forensics Inconceivable Without Microscopy
There is no crime without clues. They may be obvious, like a cartridge case at the scene of the crime or clear signs of crowbar damage on a door. But sometimes, clues are microscopically small. Besides the classic fingerprints, perpetrators also leave hairs or fiber traces.
Is that Document Genuine or Fake? How do They Identify Fake Documents?
This article shows how forensic experts use microscopy for analysis to identify counterfeit, fake documents, such as ID cards, passports, visas, certificates, etc. Then they know if it is genuine or fake.
Forensic Detection of Sperm from Sexual Assault Evidence
The impact of modern scientific methods on the analysis of crime scene evidence has dramatically changed many forensic sub-specialties. Arguably one of the most dramatic examples is the impact of molecular biology on the analysis of biological evidence.
