Tungsten needles can be used for nanoscale applications. Due to their high melting point, strength, and durability, tungsten needles are commonly used in the fabrication and manipulation of nanostructures such as nanowires, nanotubes, and nanorods. They can be used in a variety of techniques such as atomic force microscopy (AFM), scanning tunneling microscopy (STM), and electron beam lithography (EBL) to create nanoscale structures with high precision and accuracy. Additionally, tungsten needles can be used as probes for various types of spectroscopy techniques used in nanoscience and nanotechnology.