title: Friction properties of biological functional materials: PVDF membranes.
abstract: Touch is produced by sensations that include approaching, sliding, pressing, and temperature. This concept has become a target of research in biotechnology, especially in the field of bionic biology. This study measured sliding and pressing with traditional tactile sensors in order to improve a machine operator's judgment of surface roughness. Based on the theory of acoustic emission, this study combined polyvinylidene fluoride (PVDF) with a sonic transducer to produce tactile sensors that can detect surface roughness. Friction between PVDF films and experimental materials generated tiny acoustic signals that were transferred into electrical signals through a sonic transducer. The characteristics of the acoustic signals for the various materials were then analyzed. The results suggest that this device can effectively distinguish among different objects based on roughness. Tactile sensors designed using this principle and structure function very similarly to the human body in recognizing the surface of an object.
authors.affiliation: a School of Mechanical Engineering , Nanjing University of Science and Technology , Nanjing , China.
authors.forename: Long
authors.initials: L
authors.lastname: Chen
authors.affiliation: a School of Mechanical Engineering , Nanjing University of Science and Technology , Nanjing , China.
authors.forename: Changan
authors.initials: C
authors.lastname: Di
authors.affiliation: a School of Mechanical Engineering , Nanjing University of Science and Technology , Nanjing , China.
authors.forename: Xuguang
authors.initials: X
authors.lastname: Chen
authors.affiliation: b Liao Sheng Industry Group Corporation , Shengyang , China.
authors.forename: Zhengzhi
authors.initials: Z
authors.lastname: Li
authors.affiliation: c Huaan North Industry Group Corporation , Qiqihaer , China.
authors.forename: Jia
authors.initials: J
authors.lastname: Luo
mesh_terms: D001672:Biocompatible Materials / Q000737:chemistry*; D004560:Electricity; D004867:Equipment Design; D017276:Friction; D006801:Humans; D008567:Membranes, Artificial; D011145:Polyvinyls / Q000737:chemistry*; D015203:Reproducibility of Results; D012371:Robotics / Q000295:instrumentation; D012815:Signal Processing, Computer-Assisted; D014110:Touch; D014159:Transducers; D005465:Fluorocarbon Polymers
chemical_list: D001672:Biocompatible Materials; D008567:Membranes, Artificial; D011145:Polyvinyls; C024865:polyvinylidene fluoride; D005465:Fluorocarbon Polymers
keywords: PVDF; acoustic emission; biological materials; friction properties; roughness measurement; tactile sensor