Stretchable piezoelectric displacement sensor with kirigami structure
□ Wearable displacement sensors are currently being actively studied which are attached to a human body, detect movements in real time and convert them into electrical signal. However, research on tensile-capable displacement sensors has many limitations, such as low tensile properties and complex manufacturing processes. If a displacement sensor which is easily manufactured with worry sensitivity and tensile properties is developed, it can be attached to a human body with large movements such as joints or fingers and used in various applications such as AR and VR. A research team led by Sung-Hoon Ahn, mechanical engineering professor at Seoul National University, has developed a piezoelectric strain sensor with high sensitivity and high stretchability based on kirigami design cutting.
□ In this research, a stretchable piezoelectric displacement sensor was manufactured and its performance was evaluated by applying the kirigami structure to a film-type piezoelectric material. Various sensing characteristics were shown according to the kirigami pattern, and higher sensitivity and tensile properties were shown compared to existing researches. Wireless haptic gloves using VR technology were produced using the developed sensor, and the piano could be played successfully using this.
□ Professor Ahn Sung-hoon, the corresponding author of this research, said, "The developed wearable displacement sensor is a sensor with high sensitivity and tensile properties only by laser cutting PVDF, a polymer film with piezoelectric performance. Not only for the virtual piano we presented, it could be applied in various fields such as healthcare and sports equipment.".
□ This research was published on June 23 in the world-renowned journal npj flexible electronics. The journal npj flexible electronics is a nature partnership journal with IF of 12.019, and is a top journal with JCR 4% and 10% respectively in engineering, electrical & electronic, materials science, and multimidisciplinaries.
Piezoelectric strain sensor with high sensitivity and high stretchability based on kirigami design cutting
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Copyright © 2022 by the American Association for the Advancement of Science (AAAS)
Copyright © 2022 by the American Association for the Advancement of Science (AAAS)