Sierra Applied Sciences, was founded over 30 years ago by our current CEO/CTO, Barry Manley. Today the company is the world leader for magnetron sputtering technology for all deposition applications. Sierra Applied's cathodes offer the highest target utilization available in the industry today. All these attributes, along with Sierra Applied's pre-purchase performance & best price guarantee, makes it easy to buy. Simply put, Sierra Applied is the only name for magnetron cathode technology!