About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Materials Deposition by Cold Spray and Related Technologies III
|
| Presentation Title |
Cold Spray Deposition of Conductive Graphene Nanoplatelet Films for High-Performance Flexible Sensors |
| Author(s) |
Denny John, Azmal Huda Chowdhury, Anil Lama, Tyler Dolmetsch, Tanaji Paul, Arvind Agarwal |
| On-Site Speaker (Planned) |
Denny John |
| Abstract Scope |
Cold spray (CS) is emerging as a versatile solid state deposition method, traditionally employed for structural coatings, yet holding significant untapped potential for functional applications in electronics and flexible devices. This study demonstrates its feasibility for fabricating flexible components by depositing pure graphene nanoplatelet (GNP, ~5 µm) films onto polydimethylsiloxane substrate using a low-pressure CS system at room temperature with compressed air. The resulting ~5 µm films exhibited strong adhesion and no delamination after 5000 compressive cycles at 2.5 N. Integrated into a piezoresistive sensor architecture, the GNP film delivered a sensitivity of 12.13 kPa⁻¹ across 0–35 kPa, with linear Ohmic behavior and signal stability over 5000 cycles. The promising sensor performance and mechanical durability demonstrate that cold spray can serve as an effective, solvent free, low temperature, and maskless alternative to conventional vapor phase and printing-based techniques. It enables an environmentally friendly and scalable route for fabricating next generation flexible electronic devices. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, Other |