1. Higher resolution. Electron microscopes can achieve much higher resolutions than optical microscopes, allowing scientists to see much smaller objects. This is because electrons have a much shorter wavelength than light waves, so they can be used to create images with smaller pixels.

2. 3D imaging. Electron microscopes can be used to create 3D images of objects, which can provide a more detailed understanding of their structure. This is because electrons can penetrate objects more deeply than light waves, so they can be used to collect information from a greater volume of material.