Numerical simulation of electrohydrodynamic jet and printing micro-structures on flexible substrate
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TECHNICAL PAPER
Numerical simulation of electrohydrodynamic jet and printing microstructures on flexible substrate Zeshan Abbas1 • Dazhi Wang1,2 • Zhiyuan Du1 • Jianghong Qian1 • Kuipeng Zhao1 • Zhaoliang Du1 Zhu Wang1 • Yan Cui1,3 • Xi Zhang1,3 • Junsheng Liang1,3
•
Received: 26 September 2020 / Accepted: 12 October 2020 Ó Springer-Verlag GmbH Germany, part of Springer Nature 2020
Abstract Abstract This paper aims to present the simulation work and obtain optimized parameters for the development of drop-ondemand electrohydrodynamic jet (DoD E-Jet) to print control and stable micro-structures on a flexible insulating substrate. In this work, the novel comparison of three types of combination needle structures was developed based on the multiphase flow (liquid–air) technique, in order to achieve optimal printing conditions for a flexible PET substrate. According to simulation results, steel-quartz needle combination provides very unique compensations in the controllability and stability of E-Jet. Printing on a flexible substrate was challenging, but parameters used in simulation validate the possibilities for DoD E-Jet printing method. Optimize working parameters were achieved by the numerical simulation executed to generate developed and stable E-Jet morphology. In addition, various stable and uniform microscale droplets and structures were directly printed on a flexible polymer substrate with the help of collective impact of electrical force, viscous force, and internal pressure force throughout DoD E-Jet printing process. The results of numerical simulation and experimental work exhibited an excellent and promising E-Jet printing tool for flexible electronic systems.
& Dazhi Wang [email protected] 1
Key Laboratory for Micro/Nano Technology and System of Liaoning Province, Dalian University of Technology, Dalian 116024, China
2
Ningbo Institute of Dalian University of Technology, Ningbo 315000, China
3
Key Laboratory for Precision and Non-Traditional Machining Technology of Ministry of Education, Dalian University of Technology, Dalian 116024, China
123
Microsystem Technologies
Graphic abstract
1 Introduction Flexible electronics technology was described by many researchers (Balaisˇis et al. 2015; Gao et al. 2019), also known as printable/flexible circuits, is widely used for the production of electronic circuits on flexible/stretchable substrates (Yin et al. 2010). Someya et al. demonstrated that due to the cost-effectiveness, high conformability and mechanical flexibility of flexible electronic devices, it can serve as a perfect platform for designing future customized wearable devices (Someya et al. 2016). Flexible electronics is a highly interdisciplinary field that has opened up a great deal of unexplored application potential in various sectors (Awais et al. 2013). It described that the applications vary from the biomedical sector (Reuss et al. 2005; Sarma 2009) to energy technology and automotive robotics such as flexible liquid crystal display (
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