Airbrushing and surface modification for fabricating flexible electronics on polydimethylsiloxane
作者： Kartik Sondhi , Seahee Hwangbo , Yong-Kyu Yoon , Toshikazu Nishida , Z Hugh Fan
关键词: Polyethylene terephthalate 、 Nanotechnology 、 Electronic component 、 Polydimethylsiloxane 、 Materials science 、 Fabrication 、 Flexible electronics 、 Screen printing 、 Surface modification 、 Thermoplastic polyurethane
摘要: Polydimethylsiloxane (PDMS) is known to be more flexible and stretchable than other commonly used substrates for electronics, including thermoplastic polyurethane (TPU) polyethylene terephthalate (PET). However, commercially available inks printing electronics are not formulated PDMS, resulting in very poor adhesion of printed electronic components on PDMS. To address this limitation, we have developed a surface-modification method that enables adhere firmly onto Using the ASTM protocols (tape-pull test pencil-hardness test), confirmed surface modification significantly improved abrasion resistance conductive fabricated In addition, investigated using an airbrush as low-cost alternative fabricating electronics. We compared airbrushing with screen printing, common fabrication found change resistors airbrushed both surface-modified PDMS TPU was slightly less after 30–100 cycles stretching same screen-printed substrates, indicating able fabricate similar quality, if better, when printing. further illustrate effect airbrushing, patch antenna by pristine The measurement results showed close agreement simulation result, giving resonant frequency at 2.4 GHz.
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