Ko, Young Gun Do, Tae Gu Oh, Hyun Chul Lee, Hyun Jeong Han, Hung-gu Kim, Choong Hyun Choi, Ung Su 2024-01-20T08:34:59Z 2024-01-20T08:34:59Z 2021-09-02 2014-10 2045-2322 https://pubs.kist.re.kr/handle/201004/126294 Printing electronic components on a chip edge and a stepped substrate with functional inks are an attractive approach for achieving flexible and inexpensive circuits for applications such as flexible displays and large-area chemo/bio/radioactivity sensors. However, it is still challenging because a sufficient cover of the 100 mu m high step at the chip edge with a high-resolution pattern is the hardest part of the layer assembling by inkjet printing. Herein, we present a simple and effective strategy to generate electrically conductive line-patterns on stepped substrates by applying the DC electric field. On the surface of flat polyimide substrate, the fine line-pattern (less than 850 nm in line width) is achieved with a polyaniline coated MWCNT dispersed ink. Furthermore, 9.9 mu m of line width is successfully patterned on the high stepped poly( dimethylsiloxane) substrate, higher than 100 mu m, by printing only 1 time. English Nature Publishing Group Line-patterning of polyaniline coated MWCNT on stepped substrates using DC electric field Article 10.1038/srep06656 1 Scientific Reports, v.4 Scientific Reports 4 Y scie scopus 000343090400006 2-s2.0-84946945225 Multidisciplinary Sciences Science & Technology - Other Topics Article POLYMER TRANSISTOR-CIRCUITS ELECTRORHEOLOGICAL FLUIDS RESOLUTION NANOSTRUCTURES COMPOSITES ER effect Line-patterning MWCNT Polyaniline Fine alignmemt Polyimide film DC electric field Bio sensor