Miscellaneous
Needle lubrication / siliconisation to reduce friction from injection needles
Hypodermic needles can often have a high surface friction because of their manufacturing process. Needles are shaped as to minimize the force required to pierce and penetrate skin (or other substrate). To reduce the friction between the metal of the needle and skin, a thin layer of silicone can be used to coat the tip of the needle, adding a needle lubrication that reduces the friction considerably.
