Graphene

Graphene is an allotrope of carbon in the form of a single layer of atoms in a two-dimensional hexagonal lattice in which one atom forms each vertex. It is the basic structural element of other allotropes, including graphite, charcoal, carbon nanotubes and fullerenes. It can also be considered as an indefinitely large aromatic molecule, the ultimate case of the family of flat polycyclic aromatic hydrocarbons. Graphene has a special set of properties which set it apart from other allotropes of carbon. In proportion to its thickness, it is about 100 times stronger than the strongest steel. Yet its density is dramatically lower than any steel, with a surfacic mass of 0.763 mg per square meter. It conducts heat and electricity very efficiently and is nearly transparent. Graphene also shows a large and nonlinear diamagnetism, even greater than graphite, and can be levitated by Nd-Fe-B magnets. Researchers have identified the bipolar transistor effect, ballistic transport of charges and large quantum oscillations in the material.

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Gamma-ray laser moves a step closer to reality

“A physicist at the University of California, Riverside, has performed calculations showing hollow spherical bubbles filled with a gas of positronium atoms are stable in liquid helium. The calculations take scientists a step closer to realizing a gamma-ray laser, which …

Breaking (and Restoring) Graphene’s Symmetry in a Twistable Electronics Device

“Columbia researchers invent a new way to tune the properties of 2D materials by adjusting the twist angle between them; technology enables the development of nanoelectromechanical sensors with applications in astronomy, medicine, search and rescue, and more. A recent study …

Hey Design A Shirt That Produces Electricity With The Temperature Difference Between The Body And The Environment

“The ‘e-textile’ prototype uses sustainable and low-cost materials such as tomato skin Researchers at the Faculty of Science of the University of Malaga have designed a ‘low cost’ shirt capable of producing electricity due to the difference in body temperature …

New electrodes could increase efficiency of electric vehicles and aircraft

“The rise in popularity of electric vehicles and aircraft presents the possibility of moving away from fossil fuels toward a more sustainable future. While significant technological advancements have dramatically increased the efficiency of these vehicles, there are still several issues …

NUS researchers create new metallic material for flexible soft robots

“‘Origami robots’ are state-of-the-art soft and flexible robots that are being tested for use in various applications including drug delivery in human bodies, search and rescue missions in disaster environments and humanoid robotic arms. Because these robots need to be …

Graphene: The more you bend it, the softer it gets

“New research by engineers at the University of Illinois combines atomic-scale experimentation with computer modeling to determine how much energy it takes to bend multilayer graphene – a question that has eluded scientists since graphene was first isolated. The findings are …

Wonders of 2D Materials & their 3D Nano-Architectures for Energy Storage

“Over the past decade, the UAE has demonstrated a serious commitment to the development of renewable and alternative energy, which is one of the pillars of the country’s economic diversification strategy. The empowerment of renewable energy technology and the …

Hydrogen boride nanosheets: A promising material for hydrogen carrier

“Researchers at Tokyo Institute of Technology, University of Tsukuba, and colleagues in Japan report a promising hydrogen carrier in the form of hydrogen boride nanosheets1. This two-dimensional material, which has only recently begun to be explored, could go on to …

Living on the Edge: How a 2D Material Got Its Shape

“Ever since its discovery in 2004, graphene – an atomically thin material with amazing strength and electrical properties – has inspired scientists around the world to design new 2D materials to serve a broad range of applications, from renewable energy and catalysts …

Double layer of graphene helps to control spin currents

“New type of transistor one step closer Electrons have a negative charge, but they also behave like tiny magnets. This property of electrons, called spin, can be used to transport or store information in electronic circuits. Scientists are looking for …