Graphene-derived, dense-block reduced graphite oxide, highly concentrated 3D printing inks avoid use of performance-degrading additives

https://phys.org/news/2026-01-graphene-derived-material-generation-electronics.html

"trade-off between ink concentration/ flow, used polymer binders/ surfactants to prevent clumping but  dead weight ingredients reduce final product's electrical/ thermal conductivity... overcome using 3D blocks of loosely packed layers rather than flat sheets, preventing interlocking into gel stopping irreversible stacking... remain printable at 100–200 (instead of only a few) mg/mL without any binders... high-resolution screen printing on flexible surfaces: circuits/ interdigitated patterns, electrothermal Heaters"