2024 Undergraduate Research Showcase

Stability Analysis of Nanomaterial Inks Used in Inkjet and Aerosol Jet Printing

Document Type

Student Presentation

Presentation Date


Faculty Sponsor

Dr. Tony Valayil Varghese, Dr. Josh Eixenberger, and Dr. David Estrada


The utilization of advanced nanomaterial inks for multi-jet printing has expanded to printing electrodes with conductive inks. The shelf life and printability over time of these materials crucially influences the efficacy of ink performance and waste management. This study aids the quantitative and qualitative analysis of stability of gold, platinum and graphene ink. Over the months of study, rheological properties such as viscosity, surface tension, and contact angle on a Kapton substrate were evaluated. Colloidal stability was evaluated with Ultraviolet-visible spectroscopy (UV-Vis), while change in the feasible printability of inks for inkjet printing was assessed using standard dimensionless parameters such as Ohnesorge, Reynolds, capillary, Weber, and Laplace number. This research not only guided the refinement of existing inks for printing but also established a benchmark for estimating the shelf life of custom inks and the feasibility of commercial scalability. Overall, it elucidates the synthesis of more precise and effective inks for innovative printing.

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