Perfluoropolyethers (PFPEs) are widely used as hard disk lubricants for protecting carbon overcoat reducing friction between the hard disk interface and the head during the movement of head during reading and writing data in the hard disk. Due to temperature rise of PFPE Zdol lubricant molecules on a DLC surface. how polar end groups are detached from lubricant molecules during coatin... https://www.spidertattooz.com/Kiara-Sky-Gel-Polish-Pixie-Dust-0-5-oz-G554-p8987/