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Tooth-Inspired Tactile Sensor for Detection of Multidirectional Force

Department of Mechanical Engineering, Faculty of Science and Technology, Keio University, 3-14-1 Hiyoshi, Kohoku, Yokohama, Kanagawa 223-8522, Japan
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Micromachines 2019, 10(1), 18; https://doi.org/10.3390/mi10010018
Received: 16 November 2018 / Revised: 21 December 2018 / Accepted: 26 December 2018 / Published: 29 December 2018
The anatomy of a tooth was the inspiration for this tactile sensor study. The sensor consisted of a pole that was fixed in the middle of an acrylic base using a viscoelastic silicone elastomer. Four strain gauges were fixed three-dimensionally around the pole to detect its movement, which was formed in a single step in the assembly. When the load was applied to the side of the pole, the strain gauges were bent or released, depending on the direction of the applied load and the position of the strain gauges. The sensor device had the sensitivity of 0.016 mm−1 and 0.313 N−1 against the resistance change ratio. For the load detection experiment, a consistent pattern of full sine-curve, with a constant resistance change for the angles, was obtained for all of the four strain gauges, which confirmed the reliability of the sensor device to detect the direction of applied load. The amplitudes of the resistance change ratio remained to be consistent after loading-unloading processes at the frequency of 0.05–0.25 Hz. View Full-Text
Keywords: tactile sensor; bio-inspired; tooth; biomimetic; force sensor; three-dimensional tactile sensor; bio-inspired; tooth; biomimetic; force sensor; three-dimensional
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MDPI and ACS Style

Ahmad Ridzuan, N.A.; Miki, N. Tooth-Inspired Tactile Sensor for Detection of Multidirectional Force. Micromachines 2019, 10, 18. https://doi.org/10.3390/mi10010018

AMA Style

Ahmad Ridzuan NA, Miki N. Tooth-Inspired Tactile Sensor for Detection of Multidirectional Force. Micromachines. 2019; 10(1):18. https://doi.org/10.3390/mi10010018

Chicago/Turabian Style

Ahmad Ridzuan, Nurul A., and Norihisa Miki. 2019. "Tooth-Inspired Tactile Sensor for Detection of Multidirectional Force" Micromachines 10, no. 1: 18. https://doi.org/10.3390/mi10010018

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