Researchers design graphene nanocomposite temperature alarm sensor

Researchers from The University of Manchester and Hubei University have integrated the electrical conductivity of graphene and the insulation of nitrocellulose to prepare a fire alarm sensor.

The graphene/nitrocellulose membrane remains electrically insulated in normal condition, but instantly turns conductive at high temperatures: Upon encountering flames, nitrocellulose decomposes rapidly as a reaction to the high temperature and induces a distinct transition in its electrical resistance, causing the transformation process of the alarm sensor from being electrically insulated to an electron conductive state.