Flexible tactile sensors capable of real-time detection of pressure, strain, temperature, and slip are important for enabling robots to achieve stable object grasping and manipulation through human skin-like tactile perception. Among various sensing technologies, self-powered sensors based on piezoelectric and pyroelectric effects directly convert mechanical and thermal stimuli into electrical signals without an external power source, providing an approach for developing miniaturized and autonomous robotic tactile systems. Poly(vinylidene fluoride-trifluoroethylene) (P(VDF-TrFE)), a ferroelectric polymer, exhibits high flexibility, mechanical durability, and biocompatibility and is suitable for tactile sensors subjected to repeated contact and deformation. This review summarizes recent advances in P(VDF-TrFE)-based self-powered tactile sensors, including material design, device structures, sensing mechanisms, and approaches to address current challenges. Applications in gesture recognition, tactile-visualizing electronic skin, and soft object discrimination are also discussed. Finally, the remaining challenges and future research directions are outlined, with an emphasis on the potential of P(VDF-TrFE) for next-generation robotic tactile systems.
Tactile sensing has become a key enabling technology for robotic manipulation by providing robots with information about physical interactions, including contact, force, slip, and object properties. Among the various tactile sensing approaches, RoboSkin employs commercially available MEMS pressure sensors embedded with...
Thomas Kammerhofer, Thomas Fazokas, Thomas Thurner· e+i Elektrotechnik und Infor...· 0 citations
With the rapid advancement of artificial intelligence, intelligent robots are expanding from industrial automation into diverse fields, such as commercial services, healthcare, and even culinary applications. To perform dexterous manipulation in these multiscenario applications, robotic grippers must simultaneously ach...
Flexible polymer-based piezoelectric sensors are promising for electronic skin and human-machine interfaces, but challenges remain in achieving efficient electromechanical conversion and sensitive low-pressure detection due to insufficient polarization and weak interfacial coupling within polymer matrices. Here, we rep...
Wen Li, Sheng-Lin Kang, Zi-Jie Wei et al.· ACS Applied Materials and In...· 0 citations
Tactile perception systems based on flexible pressure sensors are indispensable for humanoid robots to perform dexterous manipulation, compliant interaction, and operation in visually challenging environments. Although strategies relying on surface or spatial microstructure engineering have improved sensor performance,...
Ming-Yuan Sun, Gang Ma, Shuai Dong et al.· Science Advances· 0 citations
Wearable electronics are evolving from simple motion-recording devices toward skin-conformal, textile-integrated, and continuously operating sensing systems. Pressure is a fundamental mechanical signal for pulse and respiration monitoring, plantar-force analysis, motion assessment, human-machine interaction, and electr...
Linyan Gong· Applied and Computational En...· 0 citations
This article presents a compact multimodal tactile sensor integrating triboelectric, bending, and pressure-sensing elements for robotic automation manipulation. Four triboelectric electrode pairs with different friction materials are used for surface-material recognition, while a bending sensor embedded in a centrally...
Zi-Xian Zhu, Chen-Hao Zhang, Xiao-Fei Bu et al.· IEEE Sensors Journal· 0 citations
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