The effect of tungsten needle taper on their performance depends on the application. In some applications, a tapered tungsten needle may be advantageous, while in others it may be detrimental.
For example, in microneedling applications, a tapered needle may be preferred as it can penetrate the skin more easily and with less pain. In contrast, in microinjection applications, a sharp, non-tapered needle may be preferred to ensure precise delivery of the injected material.
In general, a tapered needle will have a smaller cross-sectional area at its tip than at its base, which can affect its mechanical properties, such as its strength and flexibility. Additionally, the taper can affect the flow rate and precision of liquid dispensing. Therefore, the choice of taper for a tungsten needle should be carefully considered based on the specific application requirements.
