Science Lab

Bem-vindo ao portal de conhecimento da Leica Microsystems. Você encontrará pesquisas científicas e material didático sobre o tema microscopia. O portal oferece suporte a iniciantes, profissionais experientes e cientistas em seus trabalhos e experimentos diários. Explore tutoriais interativos e notas de aplicação, descubra os fundamentos da microscopia, bem como as tecnologias de ponta. Faça parte da comunidade do Science Lab e compartilhe sua experiência.

C. elegans embedded in Lowicryl® HM20; pharynx showing red fluorescence (mCherry). The overview shows a front view onto the resin capsule formed by the bottom of a flow-through chamber of the EM AFS2. The capsule was pretrimmed manually. The blockface was trimmed automatically using the AutoTrim function of UC Enuity guided by fluorescence of the worm. Edge length of both squares in relation to the images is 250 µm.

How Fluorescence Guides Sectioning of Resin-embedded EM Samples

Electron microscopes, including transmission electron microscopes (TEM) and scanning electron microscopes (SEM), are widely utilized to gain detailed structural information about biological samples or…

C. elegans nematode embedded in Epon epoxy resin, contrasted with osmium tetroxide. The resin block was pretrimmed by hand. Scale bar: 500 µm.

How to Save Time and Samples by Automated Ultramicrotomy

This article describes how 3D micro-CT data of a resin-embedded electron microscopy sample can be used to trim the specimen down to a defined target plane prior to sectioning. The interactive and…

How to Automatically Obtain Fluorescent Cells of Interest in a Block-face

Block-face created by automatic trimming under fluorescence. Mammalian cells of interest, stained with CellTrackerTM Green are visualized within the block-face using the UC Enuity equipped with the…

Improve Your Ultramicrotomy Workflow with Automated Sectioning

Discover advanced digital ultramicrotomy tools for fast and accurate automated sectioning. Learn about autoalignment, and efficient sample trimming leveraging 3D µCT data. See application examples…

Workflow Solutions for Sample Preparation Methods for Material Science

This brochure presents and explains appropriate workflow solutions for the most frequently required sample preparation methods for material science samples.

Camera image during auto alignment. The feedback lines indicate if the correct edges in the image are detected. Green: Vertical center line; Magenta: Upper edge of the light gap; White: Lower edge of the light gap (not visible here, falling together with red line); Red: Knife edge; Blue: Left and right edge of the block face being automatically detected.

Automatic Alignment of Sample and Knife for High Sectioning Quality

Automatic alignment of sample and knife on the ultramicrotome UC Enuity, enabling even untrained users to create ultrathin sections with reduced risk of losing precious sections.

Section ribbons with increasing section thickness - silver to purple ending in blue sections.

High Quality Sectioning in Ultramicrotomy

Discover the significance of achieving high-quality uniform sections with ultramicrotomy for precise imaging in electron microscopy.

Acrylonitrile butadiene styrene (ABS) stained with osmium tetroxide (OsO4), sectioned with a DIATOME diamond knife at room temperature, and then imaged with HAADF TEM.

Ultramicrotomy Techniques for Materials Sectioning

Learn about ultramicrotomy for materials sectioning when investigating polymers and brittle materials with transmission (TEM) or scanning electron microscopy (SEM) or atomic force microscopy.

Essential Guide to Ultramicrotomy

When studying samples, to visualize their fine structure with nanometer scale resolution, most often electron microscopy is used. There are 2 types: scanning electron microscopy (SEM) which images the…