期刊
ACS APPLIED MATERIALS & INTERFACES
卷 13, 期 38, 页码 45966-45976出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.1c11386
关键词
binder-free printing; corona discharge; electrostatic force; flexible sensors; roll-to-roll manufacturing
资金
- U.S. National Science Foundation (NSF) [2114216, 2114223]
- University of South Florida
- Div Of Civil, Mechanical, & Manufact Inn
- Directorate For Engineering [2114216, 2114223] Funding Source: National Science Foundation
This study presented a novel corona-enabled electrostatic printing (CEP) technique for ultra-fast roll-to-roll manufacturing of binder-free multifunctional e-skins, demonstrating outstanding strain sensing performance and pressure sensitivity. CEP was also utilized for patterning different functional materials onto various substrates, proving to be a high-performance, scalable, and cost-effective printing technology.
As essential components in intelligent systems, printed soft electronics (PSEs) are playing crucial roles in public health, national security, and economics. Innovations in printing technologies are required to promote the broad application of high-performance PSEs at a low cost. However, current printing techniques are still facing long-lasting challenges in addressing the conflict between printing speed and performance. To overcome this challenge, we developed a new corona-enabled electrostatic printing (CEP) technique for ultra-fast (milliseconds) roll-to-roll (R2R) manufacturing of binder-free multifunctional e-skins. The printing capability and controllability of CEP were investigated through parametric studies and microstructure observation. The electric field generation, material transfer, and particle amount and size selecting mechanisms were numerically and experimentally studied. CEP-printed graphene e-skins were demonstrated to possess an outstanding strain sensing performance. The binder-free feature of the CEP-assembled networks enables them to provide pressure sensitivity as low as 2.5 Pa and capability to detect acoustic signals of hundreds of hertz in frequency. Furthermore, the CEP technique was utilized to pattern different types of functional materials (e.g., graphene and thermochromic polymers) onto different substrates (e.g., tape and textile). Overall, this study demonstrated that CEP can be a novel contactless and ultra-fast manufacturing platform compatible with the R2R process for fabricating high-performance, scalable, and low-cost soft electronics.
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