The shape of tungsten needles can have a significant effect on their performance in different applications. For example, needles with a conical or pyramidal shape are often used for microdissection or cutting applications, as the sharp point can penetrate and cut through tissues or other materials. Needles with a flat or blunt tip, on the other hand, may be more suitable for applications where the needle needs to be pressed against a surface, such as in microinjection or microsampling.
The length and diameter of the needle can also affect its performance, as well as the material it is made of and any coatings or treatments applied to its surface. It is important to consider the specific application and requirements when selecting a tungsten needle, including the desired shape, size, and other properties such as strength, stiffness, and resistance to heat and corrosion.
