title: Hybrid radio-frequency/direct-current plasma-enhanced chemical vapor deposition system for deposition on inner surfaces of polyethylene terephthalate bottles.
abstract: A hybrid radio-frequency (rf)/direct-current (dc) system has been developed to control the biasing effects during deposition of diamondlike carbon (DLC) films onto the inner wall of polyethylene terephthalate (PET) bottles. An additional dc bias is coupled to the rf electrode to produce the effect of equivalent rf self-biasing. This allows more flexible control of the deposition of the DLC films which are intended to improve the gas barrier characteristics. The experimental results demonstrate that the additional dc bias improves the adhesion strength between the DLC film and PET, although the enhancement in the gas barrier properties is not significantly larger compared to the one without dc bias. The apparatus and methodology have practical importance in the food and beverage industry.
authors.affiliation: Institute of Plasma Surface Engineering and Equipment, State Key Laboratory of Advanced Welding Production and Technology, School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, People's Republic of China.
authors.forename: Jing
authors.initials: J
authors.lastname: Li
authors.forename: Xiubo
authors.initials: X
authors.lastname: Tian
authors.forename: Chunzhi
authors.initials: C
authors.lastname: Gong
authors.forename: Shiqin
authors.initials: S
authors.lastname: Yang
authors.forename: Ricky K Y
authors.initials: RK
authors.lastname: Fu
authors.forename: Paul K
authors.initials: PK
authors.lastname: Chu