4.7 Article

High-Resolution, Transparent, and Flexible Printing of Polydimethylsiloxane via Electrohydrodynamic Jet Printing for Conductive Electronic Device Applications

期刊

POLYMERS
卷 14, 期 20, 页码 -

出版社

MDPI
DOI: 10.3390/polym14204373

关键词

electrohydrodynamic printing; viscoelastic ink; strain sensor

资金

  1. National Research Foundation of Korea (NRF) [NRF-2017R1E1A1A01075353, NRF-2018R1C1B3008634]
  2. Technology Innovation Program - Ministry of Trade, Industry & Energy (MOTIE, Korea) [20009618]
  3. Korea Evaluation Institute of Industrial Technology (KEIT) [20009618] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)

向作者/读者索取更多资源

In the field of soft electronics, high-resolution and transparent structures based on various flexible materials constructed via various printing techniques are gaining attention. The electrohydrodynamic (EHD) jet printing technique allows for the fabrication of high-resolution, transparent, and flexible strain sensors. By investigating the effects of voltage, flow rate, nozzle distance, and speed, researchers have achieved a high-resolution printed mesh structure with a gauge factor significantly increased. The plasma treatment enhances adhesion and stability, making this simple printing technique suitable for high-resolution microchannels, 3D printing, and electronic devices.
In the field of soft electronics, high-resolution and transparent structures based on various flexible materials constructed via various printing techniques are gaining attention. With the support of electrical stress-induced conductive inks, the electrohydrodynamic (EHD) jet printing technique enables us to build high-resolution structures compared with conventional inkjet printing techniques. Here, EHD jet printing was used to fabricate a high-resolution, transparent, and flexible strain sensor using a polydimethylsiloxane (PDMS)/xylene elastomer, where repetitive and controllable high-resolution printed mesh structures were obtained. The parametric effects of voltage, flow rate, nozzle distance from the substrate, and speed were experimentally investigated to achieve a high-resolution (5 mu m) printed mesh structure. Plasma treatment was performed to enhance the adhesion between the AgNWs and the elastomer structure. The plasma-treated functional structure exhibited stable and long strain-sensing cycles during stretching and bending. This simple printing technique resulted in high-resolution, transparent, flexible, and stable strain sensing. The gauge factor of the strain sensor was significantly increased, owing to the high resolution and sensitivity of the printed mesh structures, demonstrating that EHD technology can be applied to high-resolution microchannels, 3D printing, and electronic devices.

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