Yes, tungsten needles can be used for microscale electrochemical sensing due to their good electrical conductivity, chemical stability, and mechanical strength. Tungsten needles can be used as working electrodes, counter electrodes, and reference electrodes in various electrochemical measurements, such as cyclic voltammetry, chronoamperometry, and impedance spectroscopy. The small size and high aspect ratio of tungsten needles make them suitable for microscale electrochemical measurements, especially in applications where a high degree of spatial resolution is required. Furthermore, tungsten needles can be easily modified with different materials to enhance their electrochemical properties and sensitivity for specific analytes.
