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The advantage of using tungsten needles as probe materials lies in improving the sensitivity, stability, accuracy, and accuracy of electronic optical analytical instruments.
Specifically, tungsten probes can work stably under high temperature conditions due to their higher melting point (3422 ℃) and better high-temperature resistance compared to other metal probes, while also withstanding higher current and energy densities, which is beneficial for improving the sensitivity and stability of the probes.
Tungsten needles have good chemical stability and corrosion resistance, which means they are not sensitive to oxygen, water vapor, and other gases, and are not prone to chemical reactions with other substances. This is beneficial for improving the accuracy and accuracy of the probe, as well as reducing the frequency of replacing new probes.
Tungsten needles have the advantages of high density, small volume, high strength, good rigidity, and are not easily deformed or broken, which is beneficial for adjusting the distance between the probe and the sample, and also for extending the service life of the probe material.
In addition, tungsten needles, due to their small diameter, typically range from 0.1 to 1 micrometers, making them easy to operate and capable of analyzing in small areas, making them particularly suitable for surface analysis of nanomaterials at the nanoscale.
