An evaporating colloidal particle–laden droplet leaves behind a ring-like residue after drying. We routinely observe this ubiquitous phenomenon for dried coffee drops; thus, it is known as the "coffee ...

Graphene oxide is the oxidized form of graphene, which is in turn a one-atom-thick sheet of carbon atoms linked together in a honeycomb pattern.

For the new method, the researchers make a hydrogel out of graphene oxide, complete with crosslinked sheets. This is then broken apart using ultrasound and combined with acrylate polymers, which ...

Air-dried sheets of graphene oxide are easily dispersed in water. Vacuum-drying dehydrates and crosslinks the sheets (reaction scheme) leaving them undispersible.

This is a visualization of a graphene oxide sheet (left top) and a graphene surface with attached tertathiafulvalene (TTF) molecules (right bottom). Graphene rings are composed of six carbon atoms ...

Using a 3D-printing process called direct-ink writing and a graphene-oxide composite ink, the team was able to print micro-architected electrodes and build supercapacitors with excellent performance ...

The successful implementation of graphene-based devices invariably requires the precise patterning of graphene sheets at both the micrometer and nanometer scale. Finding the ideal technique to achieve ...

A new study presents a novel approach to utilizing graphene oxide sheets, particularly for infrared-based camouflage applications.

A wide viewing angle, full-colour, holographic 3D display has been built using graphene-based materials.

Such 3D reduced graphene oxide (rGO) structures can be manipulated by controlling the aggregation pattern of the GO sheet inside the micro-droplets.

Researchers have created a graphene composite paste that can be 3D printed into complex, patterned structures.