New form of carbon that's hard as a rock, yet elastic, like rubber. Psp Ipod Movies Star Wars 8 (2017). Visualization of the different types of diamond- like linkages (red spheres) formed at curved surfaces or between the layers of graphene (black spheres) in this new type of compressed glassy carbon. Credit: Timothy Strobel. A material with such a unique combination of properties could serve a wide variety of applications from aerospace engineering to military armor. This is because the configuration of its electrons allows for numerous self- bonding combinations that give rise to a range of materials with varying properties. For example, transparent, superhard diamonds, and opaque graphite, which is used for both pencils and industrial lubricant, are comprised solely of carbon.
In this international collaboration between Yanshan University and Carnegie—which included Carnegie's Zhisheng Zhao, Timothy Strobel, Yoshio Kono, Jinfu Shu, Ho- kwang . The glassy carbon starting material was brought to about 2. Fahrenheit to create the new strong and elastic carbon.
Their findings are published by Science Advances. Scientists had previously tried subjecting glassy carbon to high pressures at both room temperature (referred to as cold compression) and extremely high temperatures. But the so- called cold- synthesized material could not maintain its structure when brought back to ambient pressure, and under the extremely hot conditions, nanocrystalline diamonds were formed. The illustrated structure is overlaid on an electron microscope image of the material. Credit: Timothy Strobel. Under the high- pressure synthesis conditions, disordered layers within the glassy carbon buckle, merge, and connect in various ways. This process creates an overall structure that lacks a long- range spatial order, but has a short- range spatial organization on the nanometer scale.
The video will load shortly. Compressed glassy carbon is an ultrastrong, hard and elastic type of carbon that consists of interpenetrating graphene networks. This video summary shows an example indentation hardness test, scratch hardness test, and provides a description of the specific strength and local atomic structure.
Credit: Zhisheng Zhao and Timothy Strobel. Credit: Timothy Strobel. Explore further: New extremely hard carbon nitride compound created. More information.
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