日立 HITACHI S-5704 扫描电子显微镜用途：适用于材料科学、半导体、生物学等领域。可用于观察样品微观形貌，像材料的细微结构、生物细胞形态；也能辅助分析样品成分，助力研究人员深入了解样品特性。技术原理：电子枪发射电子束，经电磁透镜聚焦、加速后，精准轰击样品表面。电子与样品相互作用，产生二次电子、背散射电子等信号。探测器收集这些信号，并转化为图像，从而呈现出样品的微观特征。性能：分辨率在加速电压 15kV 时可达 4nm（二次电子像）；放大倍数范围为 20 - 50 万倍；加速电压区间为 0.5 - 30kV ；样品室设计合理，能容纳一定尺寸的样品，满足多样化的样品操作需求 。Product Name: Hitachi HITACHI S-5704 Scanning Electron MicroscopePurpose: Suitable for fields such as materials science, semiconductors, and biology. It can be used to observe the micro - morphology of samples, such as the fine structures of materials and the morphology of biological cells. It can also assist in analyzing the composition of samples, helping researchers gain a deeper understanding of sample characteristics.Technical Principle: The electron gun emits an electron beam, which is focused and accelerated by electromagnetic lenses and then precisely bombards the sample surface. Electrons interact with the sample to generate signals such as secondary electrons and backscattered electrons. Detectors collect these signals and convert them into images, thus presenting the micro - characteristics of the sample.Performance: The resolution can reach 4nm (secondary electron image) at an acceleration voltage of 15kV; the magnification range is 20 - 500,000 times; the acceleration voltage range is 0.5 - 30kV; the sample chamber is reasonably designed to accommodate samples of a certain size, meeting diverse sample operation requirements.