Tungsten needles can be coated with various materials to enhance their performance for specific applications. For example, diamond-like carbon (DLC) coating can improve the wear resistance and reduce the coefficient of friction of tungsten needles. Other coatings, such as gold or platinum, can improve the biocompatibility of tungsten needles for use in medical applications. Additionally, coatings such as aluminum or titanium can enhance the adhesion of tungsten needles in certain materials. The specific effect of coating on tungsten needle performance depends on the application and the properties of the coating material used.
