“…Flexible electronics has been regarded as the forthcoming revolution within the electronics industry and has found extensive applications across diverse fields, such as photovoltaics, 1−3 flexible sensors, 4,5 electronic skin, 6−8 human− machine interfaces, 9,10 soft robotics, 11,12 emerging display, 13 and so on. 14,15 Recently, many fabrication approaches for flexible electronics have been reported, including screen printing, 16 inkjet printing, 17,18 and three-dimensional (3D) printing. 19,20,21,22 Screen printing is a printing technique that involves applying ink by exerting pressure to force it through a specially designed stencil using a squeegee.…”