Researchers developed a new method to selectively dope graphene molecules with nitrogen atoms. By seamlessly stringing together doped and undoped graphene pieces, they were able to form heterojunctions in the nanoribbons, thereby fulfilling a basic requirement for electronic current to flow in only one direction when voltage is applied - the first step towards a graphene transistor.
Over 100 years since the Nobel Prize-winning father and son team Sir William and Sir Lawrence Bragg pioneered the use of X-rays to determine crystal structure, researchers have made significant new advances in the field.
New research could lead to light detectors that can see below the surface of bodies, walls, and other objects, with applications in emerging terahertz fields such as mobile communications, medical imaging, chemical sensing, night vision, and security.
A new route to making graphene has been discovered that could make it easier to ramp up to industrial scale. Graphene, which has super strength and the ability to conduct heat and electricity better than any other known material, has potential industrial uses that include flexible electronic displays, high-speed computing, stronger wind-turbine blades, and more-efficient solar cells, among other uses now under development.
Scientists have engineered and studied 'active vesicles'. These purely synthetic, molecularly thin sacs are capable of transforming energy, injected at the microscopic level, into organized, self-sustained motion.
Using in situ transmission electron microscopy (TEM) , study shows calcium carbonate takes multiple, simultaneous roads to different minerals, provides insight into trapping carbon dioxide in underground rock.
A multi-element high-entropy alloy not only tests out as one of the toughest materials on record, but, unlike most materials, the toughness as well as the strength and ductility of this alloy actually improves at cryogenic temperatures.
Researchers have, for the first time, provided direct evidence of a water-mediated reaction mechanism for the catalytic oxidation of carbon monoxide. The work used gold nanoparticles and titanium dioxide as a catalyst to speed the process and determined that water serves as a co-catalyst for the reaction that transforms carbon monoxide into carbon dioxide.
A new combination of materials can efficiently guide electricity and light along the same tiny wire, a finding that could be a step towards building computer chips capable of transporting digital information at the speed of light.