Tungsten needles have a relatively small diameter, typically in the range of a few microns to tens of microns. Therefore, they can be used for high-resolution imaging applications in the microscale, such as scanning electron microscopy (SEM) or transmission electron microscopy (TEM). However, the resolution of tungsten needles in imaging applications can also depend on other factors such as the quality of the sample and the imaging technique used. In comparison to other materials commonly used for microscale imaging, such as silicon or carbon nanotubes, tungsten needles may have a similar or slightly lower resolution, but their mechanical properties may make them more durable and resistant to deformation during imaging.
