Generating/ sustaining high temperature plasmas at micro- and millimeter scale by combining graphene and nanodiamonds

 https://phys.org/news/2025-01-combining-graphene-nanodiamonds-microplasma-devices.html

"decorating graphene sheets with more stable nanodiamonds <100 nm for use as electrodes... plasma by generating strong electric field between electrode pairs... excellent lifetime stability in severe plasma environments... irradiating carbon-rich polymer sheet with powerful laser, transforming into graphene sheets, then surface decorated with diamonds reducing decay, using drop-casting... enabled service as stable cathode for long time... easy, cost-effective... sterilizing/ healing wounds, analyzing chemicals, displaying images"