Abstract
Multimaterial aerosol jet printing offers a unique capability to freely mix inks with different chemical compositions in the aerosol phase, enabling one-step digital fabrication with tailored compositions or functionally graded structures, including in the x-y plane. Here, in situ mixing of two carbon nanomaterial inks with distinct electrical properties is demonstrated. By tailoring the mixing ratio of the constituent inks, electrical conductivity is modulated by 130×, and sheet resistance values for a single pass span approximately 2 orders of magnitude. The ability to manufacture components with tailored electrical properties offers significant value for hybrid and flexible electronic device applications, such as microelectronics packaging. Moreover, grading properties within a part provides a new dimension of design freedom for complex assemblies.
| Original language | English (US) |
|---|---|
| Journal | ACS Applied Materials and Interfaces |
| DOIs | |
| State | Accepted/In press - 2023 |
Funding
L.G. and E.B.S. acknowledge Northrop Grumman NG Next Research Laboratories for funding support, the National Science Foundation under NSF CMMI-2224303, and the ISU Mechanical Engineering department for access to characterization equipment. L.G. also gratefully acknowledges Amin Karamati and Mahya Rahbar for their assistance with Raman spectroscopy, and Dr. Xinwei Wang of ISU for access to Raman spectroscopy facilities. M.E.A.R. and X.B. acknowledge the Iowa Energy Center (20-IEC-017) for funding support. S.D.-A. and M.C.H. acknowledge support from the National Science Foundation MADE-PUBLIC Future Manufacturing Research Grant Program (NSF Award Number CMMI-2037026).
Keywords
- advanced manufacturing
- functionally graded materials
- hybrid electronics
- multimaterial printing
- printed electronics
ASJC Scopus subject areas
- General Materials Science
