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ScienceOpen

'Self-confined electrohydrodynamic printing on micro-structured substrate for flexible transparent electrodes with embedded metal mesh' - a 'National Science Open' article published by @EDPSciences on :

🔗 scienceopen.com/document?vid=a

ScienceOpenSelf-confined electrohydrodynamic printing on micro-structured substrate for flexible transparent electrodes with embedded metal mesh<p xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" class="first" dir="auto" id="d10034240e234">Flexible transparent electrodes (FTEs) have attracted much attention due to their advantages of excellent optical/electrical conductivities and good mechanical fatigue strength. However, their fabrication presents several challenges, including fabricating wires with a high aspect ratio and sufficient tensile resistance. In this study, an embedded Ag/Cu metal-mesh FTE with a high figure of merit 24,708 (sheet resistance 0.08 Ω/sq and 83.4% optical transmittance) is fabricated through the proposed method called self-confined electrohydrodynamic printing and selective electroplating of Cu. This method employs structured surfaces and patterned hydrophilic/hydrophobic properties to enable highly controllable deposition of solutions (e.g., positioning, line width, consistency), allowing the complete filling of imprinted microgrooves with a high aspect ratio of 2 (e.g., 4 μm width and 8 μm depth) with Ag/Cu metal. Moreover, the resulting FTEs demonstrate good resistance stability under repetitive bending and stretching and exhibit excellent performance in flexible transparent heaters and electromagnetic shielding films. </p>