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3D Printed Flexible Strain Sensors: From Printing to Devices and Signals
Author(s) -
Liu Haodong,
Zhang Hongjian,
Han Wenqi,
Lin Huijuan,
Li Ruizi,
Zhu Jixin,
Huang Wei
Publication year - 2021
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.202004782
Subject(s) - digital light processing , 3d printing , materials science , fused deposition modeling , lithography , printed electronics , transfer printing , electronics , inkwell , fabrication , nanotechnology , wearable technology , flexible electronics , wearable computer , extrusion , roll to roll processing , rapid prototyping , 3d printed , computer science , optoelectronics , electrical engineering , manufacturing engineering , engineering , composite material , embedded system , medicine , projector , alternative medicine , pathology , computer vision
The revolutionary and pioneering advancements of flexible electronics provide the boundless potential to become one of the leading trends in the exploitation of wearable devices and electronic skin. Working as substantial intermediates for the collection of external mechanical signals, flexible strain sensors that get intensive attention are regarded as indispensable components in flexible integrated electronic systems. Compared with conventional preparation methods including complicated lithography and transfer printing, 3D printing technology is utilized to manufacture various flexible strain sensors owing to the low processing cost, superior fabrication accuracy, and satisfactory production efficiency. Herein, up‐to‐date flexible strain sensors fabricated via 3D printing are highlighted, focusing on different printing methods based on photocuring and materials extrusion, including Digital Light Processing (DLP), fused deposition modeling (FDM), and direct ink writing (DIW). Sensing mechanisms of 3D printed strain sensors are also discussed. Furthermore, the existing bottlenecks and future prospects are provided for further progressing research.