Sentences with phrase «of graphene sheets»

Meany: Right, we don't have a lot of clear environmental or health data on the effect of graphene sheets.

In addition, chemically active voids created by missing atoms are a surface defect of graphene sheets.

Huang and his team bypassed harmful chemicals altogether by leveraging the natural geometry of graphene sheets.

This provides us with crucial information about the organisation of graphene sheets, enabling us to recognise these unique structures,» Dr Majumder said.

Rather than a flat sheet of hexagonal carbon atoms, LIG is a foam of graphene sheets with one edge attached to the underlying surface and chemically active edges exposed to the air.

Researchers at Umeå University, together with researchers at Uppsala University and Stockholm University, show in a new study how nitrogen doped graphene can be rolled into perfect Archimedean nano scrolls by adhering magnetic iron oxide nanoparticles on the surface of the graphene sheets.

Even though electrons entered only at the 1D atomic edge of the graphene sheet, the contact resistance was remarkably low, reaching 100 ohms per micron of contact width — a value smaller than what is typically achieved for contacts at the graphene top surface.

There are many ways to carve shapes out of graphene — such as using chemicals, lasers or oxygen plasma to etch away unwanted parts of a graphene sheet.

Not exact matches

Graphene is a sheet of carbon atoms in a hexagonal tiling arrangement.

Made up of two layers of graphene, a form of carbon arranged in single - atom - thick sheets, the structure's weird behavior suggests it may provide a fruitful playground for testing how certain unusual types of superconductors work, physicist Pablo Jarillo - Herrero of MIT...

Rafiee is developing a way to line a hydrogen vehicle's fuel tank with a one - atom - thick layer of graphene, essentially a sheet of single - walled carbon nanotubes that have been opened up and laid flat, so that the tank can better store and release hydrogen.

These measurements revealed that the thinnest structures undergo more significant size changes than thicker sheets: A single layer of graphene, which contracts when heated, shrinks more than materials composed of a few graphene layers.

A single sheet of graphene resembles atomically thin chicken wire and is composed of carbon atoms joined in a pattern that makes the material extremely tough and impervious to even the smallest atom, helium.

Graphene is a two - dimensional (2D) one - atom - thick sheet of carbon crystals that has many extraordinary properties in terms of its strength, electrical and thermal conductivity, and optical transparency.

Graphene, one - atom - thick sheets of carbon, has also been shown to increase catalyst reactivity.

The widely separated cobalt atoms are bound to a sheet of nitrogen - doped graphene.

Made up of two layers of graphene, a form of carbon arranged in single - atom - thick sheets, the structure's weird behavior suggests it may provide a fruitful playground for testing how certain unusual types of superconductors work, physicist Pablo Jarillo - Herrero of MIT reported March 7 at a meeting of the American Physical Society.

They then peeled the graphene - LED sheets off a copper backing and placed them on a pliable polymer — the beginnings of a bendy screen.

Graphene — one of the strongest, lightest and most conductive materials known — is a one - atom - thick sheet of carbon atoms.

«We've seen claims by groups that say that they can coat whole silicon wafers with monolayer sheets of graphene cheaply,» reports James M. Tour, a chemist at Rice University.

THE amazing properties of graphene — a sheet of carbon with atoms in a hexagonal formation — have inspired something similar in the world of sound.

By drilling holes in a hexagonal pattern in a sheet of perspex, researchers in Spain have created what they have dubbed «sonic graphene».

Hui Huang from A * STAR's Singapore Institute of Manufacturing Technology and his colleagues from Nanyang Technological University and Jinan University, China, have fabricated asymmetric supercapacitors which incorporate metal nitride electrodes with stacked sheets of graphene.

Among other things, they can now better predict the behavior of electrons in graphene, a flat sheet of carbon just a single atom thick, which acts like a strange metal under certain conditions.

Performance was further improved by combining the ruthenium - doped carbon nitride with graphene, a sheet - like form of carbon, to form a layered composite.

The unexpected discovery of self - folding abilities in graphene suggests we're closer to making the single - atom sheets into useful electronic components

Now researchers have managed to create rectangular sheets of graphene 76 centimeters in the diagonal direction and even use them to create a working touch - screen display.

Graphene, a two - dimensional form of carbon in sheets just one atom in thick, has been the subject of widespread research, in large part because of its unique combination of strength, electrical conductivity, and chemical stability.

Single graphene sheets are chemically reactive, but stacked layers of graphene — otherwise known as graphite, or pencil «lead» — are inert.

Folding up a single sheet of graphene according to the principles of the Japanese art of origami could result in tiny devices like nano - robots and flexible circuits

Graphene is a two - dimensional sheet of carbon atoms and combines several remarkable properties; for example, it is very strong, but also light and flexible, and highly conductive.

To make their film stronger, they repeated the initial steps, layering four sheets of graphene atop one another.

Researchers in Spain have discovered that if lead atoms are intercalated on a graphene sheet, a powerful magnetic field is generated by the interaction of the electrons» spin with their orbital movement.

Graphene — a single sheet of carbon atoms — is known to be a very good electrical conductor.

Sheets of graphene, one to a few atoms thick, and aligned, single - walled carbon nanotubes self - assemble into an interconnected prorous network that run the length of the fiber.

Carbon nanotubes are tiny hexagonal tubes, made by rolling sheets of graphene, said Rasel Das, first author of the paper.

Spreading single ruthenium atoms across a sheet of graphene, the atom - thick form of carbon, turned out to be fairly straightforward, Tour said.

Lately we've been working on graphene, which is a sheet one atom thick, made entirely of carbon atoms arranged in a hexagonal structure like chicken wire.

Graphene's one - atom - thick sheets of carbon allow electrons to zip through fast, which could be a boon to ultra-fast computers.

They found MXene was an order of magnitude less conductive than a perfect graphene sheet but two orders of magnitude more conductive than metallic molybdenum disulfide.

SUPER SHEET Simple blender blades can slough off graphene, single - atom - thick layers of carbon, from graphite.

He made the particles by atomizing a dispersion of graphene - based sheets into tiny water droplets.

When you push a single sheet of graphene with a probe, it crinkles up a little like cellophane, but it doesn't rip.

Rice materials scientist Rouzbeh Shahsavari and alumnus Navid Sakhavand first built atom - level computer models of pillared graphene — sheets of graphene connected by covalently bonded carbon nanotubes — to discover their strength and electrical properties as well as their thermal conductivity.

Researchers discovered graphene, or one - atom - thick sheets of carbon, by mechanically peeling progressively finer layers from raw flakes of graphite, the same stuff found in pencil lead (See: «Carbon Wonderland,» by Andre K. Geim and Philip Kim, in the April issue of Scientific American).

«You can't do this if you have a sheet of graphene that has uncontrollable defects in different places.»

Graphene is essentially an ultra-thin sheet of carbon and possesses exciting properties such as high mechanical stability and remarkable electrical conductivity.

The hexagons grow together into a seamless sheet of graphene.

«With this new technique, we can grow large sheets of electronic - grade graphene in much less time and at much lower temperatures,» says Caltech staff scientist David Boyd, who developed the method.

«Gerardo Algara - Siller and Ossi Lehtinen carried out the experiment, and imaged the unknown ice structure between graphene sheets,» said Ulm University professor Ute Kaiser, who led the German side of the collaboration.