日立 HITACHI H-7100 透射电子显微镜。用途：适用于材料科学、生物学、物理学等领域。可用于观察材料微观结构，如金属材料的晶粒形态、纳米材料的尺寸与分布；在生物学中，能分析细胞超微结构、病毒形态等；还可用于晶体结构分析、物相鉴定以及微区成分分析等。技术原理：由电子枪发射电子束，电子束经加速后，穿透极薄的样品。电子与样品相互作用，产生透射电子、散射电子等信号。通过电磁透镜对这些信号进行聚焦、放大，最终在荧光屏或成像设备上形成样品的高分辨率图像，呈现其微观结构。性能：点分辨率为 0.4nm ，晶格分辨率达 0.22nm。加速电压 100kV ，放大倍数范围从 1,000 倍至 800,000 倍。配备双倾样品台，倾角范围在 x 方向 ±25°，y 方向 ±25° ，便于从不同角度观察样品。同时，该设备可搭载能谱仪（EDS），用于微区成分分析 。Product Name：Hitachi HITACHI H - 7100 Transmission Electron Microscope.Purpose：It is applicable to fields such as materials science, biology, and physics. It can be used to observe the microstructure of materials, such as the grain morphology of metal materials and the size and distribution of nanomaterials. In biology, it can analyze the ultrastructure of cells and the morphology of viruses. It can also be used for crystal structure analysis, phase identification, and micro - area composition analysis.Technical Principle：An electron gun emits an electron beam. After being accelerated, the electron beam penetrates an extremely thin sample. Electrons interact with the sample, generating signals such as transmitted electrons and scattered electrons. These signals are focused and magnified by electromagnetic lenses, and finally a high - resolution image of the sample is formed on a fluorescent screen or imaging device, presenting its microstructure.Performance：The point - to - point resolution is 0.4nm, and the lattice resolution reaches 0.22nm. The acceleration voltage is 100kV, and the magnification range is from 1,000× to 800,000×. It is equipped with a double - tilt specimen stage, and the inclination angle range is ±25° in the x - direction and ±25° in the y - direction, which is convenient for observing the sample from different angles. At the same time, this device can be equipped with an energy - dispersive spectrometer (EDS) for micro - area composition analysis.