日立 HITACHI S-3600N用途：适用于材料科学、生物医学、半导体等领域，可对各类材料微观结构进行观察，对材料微区化学成分做定性与半定量检测，也能用于粉末、微粒纳米样品的形态和粒度测定，以及研究复合材料界面特性。可观察大件、较重、较高的样品，对高达一定尺寸的样品进行观察和分析。技术原理：电子枪发射电子束，经加速电压加速，由磁透镜聚焦到样品表面，在偏转线圈作用下进行光栅扫描。电子与样品相互作用产生二次电子、背散射电子等信号，探测器收集并转化为电信号，经放大处理成像。该设备具备 VP 模式，通过向样品室充入特定压力气体，利用气体分子产生的正离子消除荷电，实现不导电样品直接观测。性能：分辨率方面，3kV 时为 10nm，30kV 时为 3nm；放大倍率通常为 30 - 60,000 倍；加速电压可调节；拥有较大尺寸的样品室，样品台为 5 轴电动，X 向行程 0 - 150mm，Y 向行程 0 - 110mm，Z 向行程 5 - 65mm，倾斜角度 - 20° 至 90°，可承载一定尺寸的样品；标准配备涡轮分子泵，创造清洁干燥真空条件 。Product Name: Hitachi HITACHI S-3600NPurpose: It is suitable for fields such as materials science, biomedicine, and semiconductors. It can observe the microstructure of various materials, conduct qualitative and semi - quantitative detection of the chemical composition in the micro - areas of materials, and is also used for determining the morphology and particle size of powder and nanoparticle samples, as well as studying the interface characteristics of composite materials. It can observe large, heavy, and tall samples, and observe and analyze samples up to a certain size.Technical Principle: The electron gun emits an electron beam. The electron beam is accelerated by the acceleration voltage, focused on the sample surface by the magnetic lens, and undergoes raster scanning under the action of the deflection coil. The electrons interact with the sample to generate signals such as secondary electrons and backscattered electrons. The detector collects these signals and converts them into electrical signals, which are then amplified and processed for imaging. This device has a VP mode. By filling the sample chamber with gas at a specific pressure, positive ions generated by gas molecules are used to eliminate charging, enabling the direct observation of non - conductive samples.Performance: In terms of resolution, it is 10nm at 3kV and 3nm at 30kV. The magnification is usually 30 - 60,000 times. The acceleration voltage is adjustable. It has a relatively large - sized sample chamber. The sample stage is 5 - axis motorized, with an X - travel of 0 - 150mm, a Y - travel of 0 - 110mm, a Z - travel of 5 - 65mm, and a tilt angle of - 20° to 90°. It can accommodate samples of a certain size. It is equipped with a turbo - molecular pump as standard to create a clean and dry vacuum condition.