Yes, tungsten needles can be used for nanoscale lithography. Lithography is a key process in micro- and nanofabrication that involves selectively patterning a surface using light, electrons, or ions to transfer a pattern onto a substrate. Tungsten needles can be used in electron beam lithography (EBL), which is a form of lithography that uses a focused beam of electrons to create nanometer-scale patterns on a surface. Tungsten needles are a popular choice for EBL because they are electrically conductive, have high thermal stability, and can be sharpened to very fine tips, which allows for high-resolution patterning.
