In this research, a photonic-skin is designed to mimic the tactile perception of real skin. The specimen is made of silicon elastomer and inserted with optical fiber. The optical fiber is an instinctive and alternative sensor of tactile perception with high sensitivity and reliability, and combination with silicone substrate enables high stretchability to have a high wearability. According to the experimental results of tactile tracking, the specimen demonstrates the ability to detect the physical motions like tapping, rubbing and twisting with distinguishable signals. Moreover, the experimental results of on-body mounted perceptual tests (throat, forearm, and finger) validate the wearability with a high sensitivity of vocal vibration, muscle stretching, and bending movements. The photonic-skin has the characteristic of good spatial resolution, high sensitivity, high stretchability which will have wide applications in humanoid, robotic sensing, biomonitoring, perceptual prosthetics, etc.
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This work was supported by the Program for the Strategic Research Foundation at Private Universities (S1411010) and Grant-in-Aid for Scientific Research (C) (15K06033), both from Japanese Ministry of Education, Culture, Sports, Science and Technology (MEXT).
SZ and TL did most writing for the manuscript and literature studies. G-WL and YS contributed partial literature study and supervised the development of manuscript and evaluation.
Compliance with ethical standards
Conflict of interest
On the behalf of my co-authors, I declare that no significant existing or future competing for financial, professional or personal interests that might have influenced the performance or presentation of the work described in this manuscript.
Human and animal rights
All methods and experimental protocols on humans and/or the use of human tissue samples were approved by Tokai University and performed in accordance with relevant guidelines and regulations.
The informed consent was obtained from all subjects for both study participation and publication of identifying information and images.
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