Researchers develop ultra-sensitive graphene aerogel pressure sensor for flexible e-skin and wearables

Researchers from Hebei University of Technology, Zhejiang Sci-Tech University, Nanjing University of Information Science and Technology and The Pennsylvania State University recently reported on a high-performance flexible pressure sensor based on an anisotropic reduced graphene oxide aerogel (rGOA), addressing the long-standing challenge of simultaneously achieving ultra-high sensitivity and a wide detection range in wearable and robotic sensing systems.

The device architecture integrates the rGOA sensing layer between a polyimide (PI) film with interdigital electrodes and a thin polydimethylsiloxane (PDMS) encapsulation layer. The aerogel itself is fabricated via a freeze-casting process that induces a highly ordered anisotropic structure. By controlling the freezing direction of the graphene oxide precursor, the researchers form a lamellar, porous 3D network that enables controlled deformation under pressure and efficient modulation of electrical pathways.

Read More Graphene-Info – Graphene industry portal