Artificial dry adhesives have been developed based on materials and production methods by many researchers. Nowadays, extensive research has attempted to apply dry adhesives to various industrial fields, such as glass transportation systems, with admirable performance. However, most artificial dry adhesives consist of polymers such as thermosetting polymers, ultraviolet curable polymers, and water-based polymers. These polymers exhibit low thermal resistance and outgassing under high-vacuum conditions. Hence, the usage of dry adhesives under hightemperature and vacuum conditions, such as semiconductor manufacturing processes, is critically limited. In this study, based on the contact mechanism, a dry adhesive for use under hightemperature and vacuum conditions is developed using fluorocarbon rubber with excellent thermal resistance and low outgassing properties. The fluorocarbon rubber dry adhesive (FDA) material shows a high pull-off strength of up to 24.1 N cm −2 and its performance is verified through various experiments. Glass transportation experiments using a robot arm and custom-built equipment are also conducted and the results confirm the feasibility of using FDA in industrial applications. The FDA is expected to be a useful alternative under high-temperature and vacuum conditions, such as those in the aerospace industry and display manufacturing processes.
The human fingertip consists of a fingerprint with many micro-grating structures. The main roles of the fingerprint could be divided into two purposes, namely, the enhancement of the frictional force and the effective transmittance of the biosignal. In this study, we present the fingerprint-inspired end-effector that has not only admirable frictional force but also electric conductivity. The end-effector is composed of fluorocarbon rubber, one of the famous materials to achieve high frictional force and robustness. Through various experiments, the novel performance of micro structured fluorocarbon rubber end-effector (MSFE) is characterized by comparing with a macroscale patterned sample (MPS), which has been already used in real industrial fields. Experimental results are analyzed theoretically. Furthermore, as feasible applications, we suggest two applications based on the role of the fingerprint. One is the conductive astronaut glove with high frictional force, and the other one is a non-slip pad for the next-generation glass transfer systems. Through these experiments, we successfully observe the enhanced system performance and confirm the possibility of using the MSFE as feasible applications. We believe that the MSFE could be a useful and powerful alternative as an end-effector, not only in the aerospace industry but also in display manufacturing processes.
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