Note that the cited density does not include the weight of the air incorporated in the structure: it does not float in air. The material reportedly can be produced at the scale of cubic meters. Aerographene was discovered at Zhejiang University by a team of scientists led by Gao Chao. These materials were one-dimensional and two-dimensional.
It’s official, 3D printed graphene aerogel is the lightest material in the world
"Synthesis and Characterization of Graphene-family Mesoporous Nanomater" by Romney Meek
Rise in interest matches a global demand for better power sources for electronic devices, and future technologies like smart wearables and flexible LED screens. The challenge with graphene is still to produce at scale and retain the properties that make the material so intriguing. The method they have used takes inkjet 3D printing into deep freeze. The ink is prepared by mixing graphene oxide GO powders with deoinozed DI water. This is loaded into two syringe barrels that jet the ink one droplet at a time. When the ink is deposited DI water freezes, solidifying the graphene into a 3D shape. After printing, the structure undergoes a further two freezing processes to cement the particles together.
Effective date : Year of fee payment : 4. A carbon-based aerogel is disclosed in which the carbon atoms are arranged in a sheet-like nanostructure. The aerogel may be either a graphene oxide aerogel or a graphene aerogel and may further be reinforced with a polymer.
Three-dimensional 3D graphene skeletons constructed from two-dimensional 2D graphene layers can overcome the limitation caused by the physical dimensions of surrounding composite matrices under certain reinforcement limits to effectively transfer heat. However, eliminating the interfacial thermal resistance remains challenging in improving the thermal conductivity of composites. In this study, we reduced the interface thermal resistance of graphene layers in a graphene aerogel GA by controlling the stacking structure of the graphene layers. Based on the experimental analyses, theoretical calculation and molecular dynamics simulation, we demonstrated that the oxidation degree of the graphene layers affected the self-assembly behaviour of GA during the directional freezing procedure, which governed the thermal contact resistance among the layers and the final thermal conductivity of the GA-based epoxy composites. In addition, we also found that reducing the thermal resistance among graphene layers was the dominant factor in the thermal conductivity of the composite rather than the thermal resistance between the graphene layers and the epoxy matrix.