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脳神経外科、眼科、形成外科、耳鼻咽喉科、歯科の専門医向けに厳選された、最新の科学・臨床リソースを探索しませんか？ 貴重な症例や洞察、シンポジウムなど、多彩なコンテンツをご覧いただけます。 手術用顕微鏡の最先端技術に焦点を当て、AR蛍光、3D視覚化、術中OCTイメージングといった革新的技術が、複雑な手術の精度向上や意思決定の最適化にどのように貢献するかをご紹介します。
Mouse fibroblasts where F-actin is labelled with FITC (green), tubulin with Cy5 (red), and nuclei with DAPI (blue). Image courtesy of Dr. Günter Giese, Max Planck Institute for Medical Research, Heidelberg, Germany.

Overview of Fluorescent Dyes in terms of Applications and Properties

An introduction to commonly used fluorescent dyes and an overview of their characteristics are given in this article. Fluorescence microscopy is used for the study of specific cellular components with…
Zebrafish heart, DAPI (nuclei, blue), Tropomyosin (cardiomyocytes, red) and GFP (primordial cardiac layer, green). Courtesy of Anna Jazwinska, University of Fribourg, Switzerland.

A Guide to Fluorescence Microscopy

Fluorescence microscopy uses the ability of fluorophores, dyes, or fluorescent proteins to emit light of a specific wavelength after being excited with light of a shorter wavelength. Biomolecules can…
Some 2D measurements, e.g., lengths and areas, made on a PCB sample with a Leica measurement microscope using the Enersight software.

How to Select the Right Measurement Microscope

With a measurement microscope, users can measure the size and dimensions of sample features in both 2D and 3D, something crucial for inspection, QC, failure analysis, and R&D. However, choosing the…
Example of calibrating a microscope at a higher magnification value using a stage micrometer.

Microscope Calibration for Measurements: Why and How You Should Do It

Microscope calibration ensures accurate and consistent measurements for inspection, quality control (QC), failure analysis, and research and development (R&D). Calibration steps are described in this…
Shown is the DMi8 inverted microscope which is used for life-science research.

Factors to Consider When Selecting a Research Microscope

An optical microscope is often one of the central devices in a life-science research lab. It can be used for various applications which shed light on many scientific questions. Thereby the…

Infinity Optical Systems - From “Infinity Optics” to the Infinity Port

“Infinity Optics” is the concept of a light path with parallel rays between the objective and tube lens of a microscope [1]. Placing flat optical components into this “infinity space” which do not…
Spherulitic crystals of hippuric acid, a carboxylic acid found in urine, imaged with crossed polarizers showing so-called Maltese crosses. Spherulitic structures are formed by radial crystal growth starting from a central crystal nucleus. Image recorded with a DM4 P microscope using transmitted light, 20x Plan Fluotar objective, and polarizers.

A Guide to Polarized Light Microscopy

Polarized light microscopy (POL) enhances contrast in birefringent materials and is used in geology, biology, and materials science to study minerals, crystals, fibers, and plant cell walls.
Area of a printed circuit board (PCB) which was imaged with extended depth of field (EDOF) using digital microscopy.

顕微鏡を知る：被写界深度

顕微鏡において被写界深度は、凹凸の変化が⼤きい構造を持つ試料をピントがあったシャープに観察・撮像するために重要なパラメータです。被写界深度は、開⼝数、解像度、倍率の相関関係によって決定され、解像度とパラメータは反⽐例の関係にあります。被写界深度と解像度のバランスが最適になるように調整することができる顕微鏡もあります。
These images show the microstructure of a hard metal with 10% cobalt which is used for heavy-duty tools. The large increase in magnification of the right image (compared to the left) has a risk of being outside the useful range or, in other words, empty magnification.

What is Empty Magnification and How can Users Avoid it

The phenomenon of “empty magnification”, which can occur while using an optical, light, or digital microscope, and how it can be avoided is explained in this article. The performance of an optical…
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