3D printed graphene-coated flexible lattice as piezoresistive presure sensor

Amar M Kamat*, Ajay Giri Prakash Kottapalli

*Corresponding author for this work

Research output: Contribution to conferencePosterAcademic

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Abstract

Piezoresistive sponges represent a popular design for highly flexible pressure sensors and are typically fabricated using templating methods. In this work, we used stereolithography (SLA) to 3D-print an elastomeric body-centered cubic (BCC) lattice structure with a relative density of 21% and an elastic modulus of 31.5 kPa. The lattice was dip-coated with graphene nanoplatelets to realize a piezoresistive pressure sensor with excellent performance (gauge factor = 3.25, sensitivity = 0.1 kPa-1), high deformability (up to 60 % strain), and repeatability. The novel approach outlined in this work offers greater control over the microstructure and can be used to fabricate sensors with tunable properties.
Original languageEnglish
Publication statusAccepted/In press - 27-Apr-2021
EventTransducers 2021: The 21st International Conference on Solid-State Sensors, Actuators and Microsystems - Virtual
Duration: 20-Jun-202125-Jun-2021

Conference

ConferenceTransducers 2021
Period20/06/202125/06/2021

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