A piezoelectric-triboelectric hybrid self-driven electronic skin and its preparation method

Abstract

The present invention provides a piezoelectric-triboelectric hybrid self-driven electronic skin, which is characterized in that it includes a triboelectric sensing part and a piezoelectric sensing part arranged on its lower side, and the triboelectric sensing part includes A flexible transparent porous electronegative film and a first flexible conductive fabric electrode arranged on the lower side of the flexible transparent porous electronegative film, the piezoelectric sensing part includes a piezoelectric nanofiber film and a piezoelectric nanofiber film respectively The second flexible conductive fabric electrode and the third flexible conductive fabric electrode on the upper and lower sides of the upper and lower sides, the piezoelectric nanofiber membrane is obtained by electrospinning technology, and the flexible transparent porous electronegative film is made of lotus leaf The resulting porous structure was prepared as a template. The multi-functional flexible self-driven electronic skin prepared by the present invention does not require an external additional power supply to ensure the accuracy of sensing and the comfort of human body wear.

Description

technical field [0001] The invention belongs to the technical field of novel flexible sensors, and in particular relates to a piezoelectric-triboelectric hybrid self-driven electronic skin and a preparation method thereof. Background technique [0002] Biological skin mainly undertakes the functions of defense and protection, sweating and breathing, and sensing heat, cold and pressure. Electronic skin is a kind of wearable bionic tactile sensor that can imitate human skin protection, perception, regulation and other functions. As a new type of artificial flexible electronic device, in addition to the basic functions of biological skin, electronic skin can also realize special functions that human skin tissue does not have by creating or recreating a sensory response system. Electronic skin is related to the intelligence and multifunctionality of flexible robots, medical equipment, human prosthetics and other carriers, and is a multidisciplinary and rapidly developing field....

AI Technical Summary

Problems solved by technology

Most electronic skins do not have the functions of object property and shape sensing, and physiological signal pulse sensing at the same time.

Moreover, most of its preparation processes involve micro-nano processing methods such as plasma treatment, physical vapor deposition, chemical vapor deposition, and magnetron sputtering. In addition to complex processes, high costs, long processes, and the need for external power supplies, these methods require hard and heavy power supplies. Not only affects the wearing comfort of the human body, but also cannot maintain a close and seamless fit with the human body, which greatly affects the fidelity of the sensing signal

In addition, frequent battery replacement or recharging is inconvenient, especially in emergencies

Images