A new materials enterprise specializing in the research, development, and production of advanced functional membrane materials, with core products including electrospun fiber membranes and specialized separators for battery/electronic applications. The microstructure of its products (such as fiber morphology, pore size distribution, and component uniformity) directly determines mechanical properties, breathability, and functional performance. Electrospun fiber and separator samples often require embedding treatment to preserve their microstructure. Traditional benchtop desktop scanning electron microscopes are either cumbersome to operate or too large in size, making them unsuitable for efficient inspection of such samples. In this case study, a desktop scanning electron microscope was employed, leveraging its compact size, ease of operation, and high-resolution imaging capabilities, to perform microscopic observation of the enterprise's electrospun fiber and separator samples, providing an efficient and convenient microscopic inspection solution for product quality control and process optimization.

I. Case Background and Testing Requirements

The new materials enterprise needs to conduct quality testing and process validation for its two core product types: electrospun fiber membranes and specialized separators. The key testing requirements are as follows:

Examine the fiber morphology, diameter uniformity, and dispersion state of electrospun samples, identifying defects such as fiber agglomeration and breakage;

Examine the surface porous structure, pore size distribution, and thickness uniformity of separator samples to verify their structural integrity;

The testing equipment must be suitable for limited laboratory space, offer convenient operation, and maintain both testing efficiency and imaging clarity to meet the demands of batch sample testing and rapid characterization during the R&D process.

In previous testing, the company faced challenges: either the equipment was complicated and difficult to operate, reducing testing efficiency, or the large scanning electron microscopes occupied excessive space and incurred high costs, making them unsuitable for routine batch testing in the laboratory or rapid testing during R&D. The SuperSEM N10 desktop scanning electron microscope selected for this case is compact, easy to operate, and requires no complex adjustments to begin testing. It perfectly fits the company's testing and R&D needs, helping optimize its electrospinning processes and improve the quality of its separator products.

II. Testing Equipment

The SuperSEM N10 desktop scanning electron microscope was used for this test. Its core advantages align well with the enterprise's sample testing requirements, with key highlights as follows:

① Compact Size: The entire unit occupies only 0.3 m² of floor space and can be flexibly placed on a standard laboratory bench without requiring a dedicated area for large equipment, making it suitable for both R&D and batch testing scenarios.

② High-Quality Imaging: Equipped with a tungsten filament electron gun and a Backscattered Electron Detector (BSED), it delivers high-resolution imaging and a large depth of field. It clearly reveals the fine morphology of electrospun fibers and the porous structure details of separators, precisely capturing microscopic defects in the samples.

③ Convenient Operation: No advanced professional skills are required. The instrument quickly enters the testing state after startup, making it suitable for batch sample inspection and rapid characterization during R&D. It significantly improves testing efficiency and reduces the learning curve for operators.

III. Testing Process and Result Analysis

(1) Microscopic Morphology Observation of Electrospun Samples

After starting the instrument, the electrospun samples were scanned using BSED mode at magnifications ranging from 500× to 5000×. The complete microscopic morphology of the electrospun fibers was clearly observed: the fibers appeared continuous and elongated, with uniform diameter and no significant variation. The dispersion state was good, with no defects such as agglomeration, breakage, or adhesion. The fiber surfaces were smooth, with no visible impurities.

Based on the imaging results at different magnifications, it can be concluded that the electrospinning process for this sample is stable, and the fiber morphology and dispersion meet the company's product quality requirements. These observations provide intuitive microscopic data to support subsequent process optimization, enabling targeted adjustments of process parameters to further improve fiber uniformity.

(2) Microscopic Morphology Observation of Separator Samples

Microscopic scanning of the separator samples under the same mode clearly revealed the porous structure of both the surface and cross-section: the pores on the separator surface were uniformly distributed with consistent pore sizes, and no issues such as excessively large or small pores or pore blockage were observed. Cross-sectional observation showed that the separator thickness was uniform, with the porous structure extending throughout the entire cross-section and good pore connectivity.

These imaging results indicate that the porous structure of the separator sample is reasonable and meets the core functional requirements (such as breathability and isolation) needed for battery and electronic applications. This validates the rationality and stability of the enterprise's separator production process, making it suitable for quality inspection in batch production.

IV. Case Summary and Equipment Advantages

Through the use of the SuperSEM N10, this application case successfully completed microscopic morphology inspection of both electrospun and separator samples for the new materials enterprise. The testing requirements were fully met, while the core advantages of the instrument were clearly demonstrated, effectively addressing the key pain points of traditional testing equipment:

1、Compact Size, Strong Adaptability: The entire unit is small and space-saving, allowing flexible placement on a standard laboratory bench without requiring a dedicated equipment area. It is perfectly suited to the limited space typical of small and medium-sized new materials enterprise laboratories, accommodating both R&D and batch testing needs.

2、High-Resolution Imaging, Accurate Detection: Equipped with a tungsten filament electron gun and a BSED detector, the instrument provides large depth of field and high contrast. It clearly captures the fine morphology of electrospun fibers and the porous structure details of separators, enabling precise identification of micro-defects such as fiber agglomeration, breakage, and abnormal pore sizes. This provides reliable evidence for product quality assessment.

3、Convenient Operation, Outstanding Efficiency: No advanced professional skills are required. The instrument can be quickly started and the testing process initiated with no complex adjustments. The testing time per sample is short, making it suitable for batch sampling and rapid characterization during R&D. This significantly improves testing efficiency and reduces labor costs.

4、High Cost-Effectiveness, Strong Practicality: Compared to large scanning electron microscopes, this instrument requires no high procurement or maintenance costs, while still meeting the microscopic inspection needs of new materials enterprises for their core products. It is well-suited for routine quality control and process optimization, helping enterprises enhance their product competitiveness.

In summary, SuperSEM N10 desktop scanning electron microscope, leveraging its core advantages of compact size, high-resolution imaging, and convenient operation, can efficiently complete microscopic morphology inspection of new functional membrane materials such as electrospun fiber membranes and specialized separators. It perfectly meets the testing and R&D needs of new materials enterprises, providing intuitive and reliable microscopic technical support for product quality control and process optimization. The instrument can be widely applied for routine microscopic characterization of functional membrane materials and related fields.