Tungsten needles have several advantages compared to other types of needles, but also some limitations. Here are some comparisons between tungsten needles and other common needle materials:
Stainless steel needles: Stainless steel needles are a common alternative to tungsten needles. While stainless steel needles are less expensive and more malleable than tungsten needles, they are also less durable and less able to maintain a sharp edge over time. Tungsten needles are harder and more resistant to bending or breaking, making them a better choice for some applications.
Platinum wire needles: Platinum wire needles are often used in electrophysiology experiments due to their high electrical conductivity. While platinum wire needles are highly conductive and resistant to corrosion, they are also more expensive and more fragile than tungsten needles.
Glass microneedles: Glass microneedles are used for precision injection or extraction of biological materials. While glass needles are highly precise and can be easily manufactured, they are also more fragile than tungsten needles and may break or fracture more easily.
Ceramic needles: Ceramic needles are highly resistant to corrosion and wear, making them a good choice for some applications. However, they can be more difficult to manufacture and more expensive than tungsten needles.
Overall, the choice of needle material will depend on the specific application and the desired properties of the needle. Tungsten needles offer a good balance of durability, sharpness, and conductivity, making them a popular choice in many scientific research applications.
