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显微镜科学与教学知识中心

显微镜科学与教学知识中心

显微镜科学与教学知识中心

徕卡显微系统的知识库提供有关显微镜学科的科学研究和教学材料。内容旨在对显微镜初学者、有经验的显微镜操作实践者和使用显微镜的科学家在他们的日常工作和实验有所帮助。这里有探索交互式教程和应用笔记，你可以找到你需要的显微镜的基础知识以及前沿技术——快来加入徕卡显微知识社区，分享您的专业知识！
White Light Laser: Lambda square scan

白激光

在生物医学应用中，共聚焦显微镜的完美光源它应该有足够的强度，可调谐的波长，以便同时激发一系列样品。此外，它应该成为荧光寿命实验的脉冲光源。这样的光源已经出现：白激光。它采用高能脉冲红外光纤激光器经过光子晶体光纤以产生连续光谱。通过声光调制滤片从该连续光谱中选择窄带激光。

光学显微镜 – 基础入门

150多年来，光学显微镜一直都是生命科学研究以及材料科学当中的标准工具之一。要经济有效地使用这一工具，了解光学的基础知识，尤其是构成每一台显微镜的基本组成部分将会获得很大的帮助。

Controlling the TIRF Penetration Depth is Mandatory for Reproducible Results

The main feature of total internal reflection fluorescence (TIRF) microscopy is the employment of an evanescent wave for the excitation of fluorophores instead of using direct light. A property of the…

冷发光基础原理

自然界中有许多发光过程。冷发光是一系列发光现象的统称，是指不因高温而引发的发光事件。本文描述了不同形式的冷光并对荧光进行了详细介绍。在第二部分解释了描述荧光色素的相关技术术语，如淬灭、漂白或量子效率，以便对荧光分子的基础特性有更深入的了解。
Primary leaves of cowpea (Vigna unguiculata "California Blackeye") inoculated with cowpea mosaic virus (CPMV) containing the GFP-gene inserted between the movement protein (MP) and the capsid proteins (CPs) in the viral RNA 2

活细胞成像简介

了解复杂且快速变化的细胞动力学是深入探索生物进程的重要一步。因此，现代生命科学研究越来越需要关注于在分子水平上实时发生的生理事件。
TIRF image of brest carcinoma tumor cells expressing GFP tagged cell adhesion Molecule CD44 that is expressed on the cell membrane, imagined in TIRF.

Total Internal Reflection Fluorescence (TIRF) Microscopy

Total internal reflection fluorescence (TIRF) is a special technique in fluorescence microscopy developed by Daniel Axelrod at the University of Michigan, Ann Arbor in the early 1980s. TIRF microscopy…
TIRF Image of Tubulin, YFP, penetration depth: 120 mm

Applications of TIRF Microscopy in Life Science Research

The special feature of TIRF microscopy is the employment of an evanescent field for fluorophore excitation. Unlike standard widefield fluorescence illumination procedures with arc lamps, LEDs or…
Snapshot from a time lapse of a calcium imaging experiment using the ratiometric calcium indicator Fura-2.

Ratiometric Imaging

Many fundamental functions of a cell strongly depend on delicate, but nevertheless dynamic balances of ions (e.g. calcium, magnesium), voltage potentials and pH between the cell’s cytosol and the…

Fluorescence Recovery after Photobleaching (FRAP) and its Offspring

FRAP (Fluorescence recovery after photobleaching) can be used to study cellular protein dynamics: For visualization the protein of interest is fused to a fluorescent protein or a fluorescent dye. A…
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