Filters are commonplace in today’s society, and fulfill critical functions in industry and the household, ranging from air filters that give you clean, breathable air to water filters that ensure you have safe, potable tap water.
The key to high-performance filtration is the development of synthetic fibers. To optimize a filter’s design (so it continues to filter a broad range of dry or wet particulates over time), features like fiber diameter, density, and surface morphology all need to be thoroughly characterized and optimized.
Traditional methods for fiber analysis, such as optical microscopy and atomic force microscopy (AFM), are insufficient for this multi-modal analysis. Optical microscopy lacks the resolution necessary to accurately study nanofibers, whereas AFM is too slow and suffers from physical probe issues. These methods also rely on slow, manual measurement and data analysis.
Scanning electron microscopy (SEM), meanwhile, offers exceptional resolution capabilities, and allows you to automatically characterize multiple fibers at the same time. With the addition of leading automation software, critical filter parameters can be extracted rapidly and reliably. This minimizes the time spent using SEM in the lab, increasing development throughput as you can quickly and easily analyze fibers for filtration design.
Thermo Fisher Scientific offers a range of SEM instrumentation for fiber analysis. When combined with Thermo Scientific FiberMetric Software, accurate, automated measurement of micro- and nanofiber properties is possible.