Yes, tungsten needles can be used for nanoinjection in materials science. The sharpness and durability of tungsten needles make them an ideal tool for precise manipulation of materials at the nanoscale. In nanoinjection, a tungsten needle can be used to deposit a small amount of material onto a substrate or into a microfluidic channel. This technique is commonly used for the fabrication of nanoscale devices and structures, such as nanowires, nanotubes, and nanoparticles. Tungsten needles can also be used for nanoinjection in biological applications, where they are used to inject small quantities of materials, such as drugs or DNA, into cells.
