Yoon, ES Yang, SH Kong, H Kim, KH 2024-01-21T08:34:34Z 2024-01-21T08:34:34Z 2021-09-03 2003-08 1023-8883 https://pubs.kist.re.kr/handle/201004/138386 The effect of surface topography on the water-wetting nature and micro/nano tribological characteristics of polymer surfaces was experimentally studied. A plasma-treated thin polymer film and ion-beam-treated PTFE (polytetrafluoroethylene) were used as. at specimens. Thin polymer films were deposited on Si-wafer (100) by the parallel-plate plasma technique. The ion-beam-roughening treatment was performed to change the PTFE surface topography using a hollow cathode ion gun under different argon-ion dose conditions in a vacuum chamber. Micro and nano tribological characteristics, water-wetting angles and roughness were measured with a micro-tribotester, SPM (scanning probe microscope), contact anglemeter and profilometer, respectively. The plasma-treated thin polymer film and ion-beam-treated PTFE surfaces were rendered increasingly hydrophobic as a function of the treatment time. The wetting characteristics were strongly dependent on the micro-roughness and the sharpness of the asperities. The tribological characteristics on the nano-scale showed different results from those on the micro-scale. It was noted that the contact-size ratio, especially the ratio of the tip or ball to the average surface roughness at a standard cut-off length, should be considered for evaluating the micro- and nano-scale tribological test results. English KLUWER ACADEMIC/PLENUM PUBL The effect of topography on water wetting and micro/nano tribological characteristics of polymeric surfaces Article 10.1023/A:1024409316644 1 TRIBOLOGY LETTERS, v.15, no.2, pp.145 - 154 TRIBOLOGY LETTERS 15 2 145 154 scie scopus 000183648200010 2-s2.0-0742323465 Engineering, Chemical Engineering, Mechanical Engineering Article; Proceedings Paper topography wetting angle micro nano adhesion friction SPM