Abstract
In recent years, additive manufacturing of polydimethylsiloxane (PDMS) has gained interest for the development of soft electronics. To build complex electrical devices, fabrication of multilayered structures is required. We propose here a straightforward digital printing fabrication process of silicone rubber-based, multilayered electronics. An inkjet-printable PDMS solution was developed for the digital patterning of elastomeric structures. The silicone ink was used together with a highly conductive silver nanoparticle (Ag NP) ink for the fabrication of all-inkjet-printed multilayered electrical devices. The application of the multilayered circuit board was successful. The sheet resistances were below 0.3 ω/□, and the conductive layer thickness was less than 1 μm. The electrical insulation between the conductive layers was done by printing a 20-25 μm-thick dielectric PDMS layer selectively on top of the bottommost conductive layer.
| Original language | English |
|---|---|
| Pages (from-to) | 11990-11997 |
| Number of pages | 8 |
| Journal | ACS Applied Materials and Interfaces |
| Volume | 12 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - 11 Mar 2020 |
| Publication type | A1 Journal article-refereed |
Funding
This work was funded by the Academy of Finland (grant number: 292477) and Business Finland (grant number 2947/31/2018). This work was supported (in part) by the Academy of Finland “Printed Intelligence Infrastructure” (PII-FIRI, grant no. 320019). M. Mäntysalo was supported by the Academy of Finland (grant number 288945). Riikka Mikkonen would like to thank Nokia Foundation for support.
Keywords
- dielectric
- elastomer
- inkjet printing
- multilayer
- polydimethylsiloxane
- printed electronics
Publication forum classification
- Publication forum level 2
ASJC Scopus subject areas
- General Materials Science