Scanning Electron Microscope (SEM)
Scanning Electron Microscope
Operating
Model: Gemini 300
Function: High-resolution microscopic morphology observation and micro-area compositional analysis.
Engineer: Teacher Qu / +86-21- 34207734-8003 / minni.qu@1
Location: East Area,Testing Zone IV
Equipment ID: ETE4SEM01
  • Basic Equipment Information
  • Operating Principle
  • Typical Application Case
Main Application

It is primarily used for ultra-high-resolution microscopic morphology observation of micro- and nano-scale materials and structures. It can also be combined with an energy-dispersive X-ray spectroscopy (EDS) system to perform micro-area compositional analysis on material or structural surfaces and cross-sections.

 

Process/Testing Capabilities

Field emission scanning electron microscopy (FE-SEM) is widely used in the inspection of semiconductors, inorganic non-metallic materials, and devices due to its high resolution, large depth of field, enhanced stereoscopic imaging, and wide adjustable magnification range.

It enables secondary electron imaging and backscattered electron imaging of surface morphology for various solid samples, as well as image processing. When combined with an energy-dispersive X-ray spectroscopy (EDS) system, it can perform qualitative, semi-quantitative, and quantitative elemental analysis at micro-regions (point, line, and area) on the sample surface. It provides integrated analytical capabilities for both morphology and chemical composition.

 

Technical Specifications

1.Resolution: ≤0.7nm@15V; ≤1.2nm@1kV

2.Accelerating voltage: 0.02–30kV; excellent low-voltage performance suitable for observing low-conductivity samples

3.Detectors: secondary electron detectors (one in-lens secondary electron detector and one chamber secondary electron detector), backscattered electron detector, and infrared detector, enabling simultaneous acquisition of secondary electron and backscattered electron images

4.Sample stage: maximum directly loadable sample size Φ200 mm

5.Five-axis motorized eucentric stage, tilt range -3° to 70°, continuous 360° rotation

6.Equipped with an EDS system for micro-area compositional analysis

7.Ion sputter coater for gold (Au) coating deposition

Field emission scanning electron microscopy (FE-SEM) uses a field emission electron source to generate a high-energy electron beam, which is focused onto the sample surface through an electromagnetic lens system. When the electron beam interacts with the sample, signals such as backscattered electrons, scattered electrons, and secondary electrons are generated. These signals are collected and converted into images, enabling observation and analysis of the sample’s surface microstructure.

When equipped with an energy-dispersive X-ray spectroscopy (EDS) system, it allows simultaneous microscopic morphology observation and micro-area compositional analysis.

Low-voltage imaging of uncoated photoresist micropillars (fabricated by a 3D micro/nano printing system).

Please arrive at the laboratory at least 15 minutes in advance to prepare the sampleMagnetic and powder samples are prohibited. Samples must be kept clean, and direct contact with hands is not allowed.
Sample requirements:

1.The sample must be a dry, anhydrous solid with no volatile solvents.

2.Non-magnetic materials only.

3.Porous materials must be pre-vacuumed before measurement.

The list below shows FAQs (click a question to view the answer). If your question is not listed, you can leave a message using the link.
FAQs
  • 01
    SEM样品制备一般有什么要求?

    A. 要确保分析的位置被暴露出来;  

    B. 样品表面导电性良好,如导电性不好可降低加速电压或采用喷金增加导电性;  

    C.样品无易挥发物质;  

    D.不易被电子束损伤。

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