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|Title:||A hydrothermal anvil made of graphene nanobubbles on diamond||Authors:||Xuan Lim, C.H.Y.
|Issue Date:||2013||Citation:||Xuan Lim, C.H.Y., Sorkin, A., Bao, Q., Li, A., Zhang, K., Nesladek, M., Loh, K.P. (2013). A hydrothermal anvil made of graphene nanobubbles on diamond. Nature Communications 4 : -. ScholarBank@NUS Repository. https://doi.org/10.1038/ncomms2579||Abstract:||The hardness and virtual incompressibility of diamond allow it to be used in high-pressure anvil cell. Here we report a new way to generate static pressure by encapsulating single-crystal diamond with graphene membrane, the latter is well known for its superior nano-indentation strength and in-plane rigidity. Heating the diamond-graphene interface to the reconstruction temperature of diamond (∼1,275 K) produces a high density of graphene nanobubbles that can trap water. At high temperature, chemical bonding between graphene and diamond is robust enough to allow the hybrid interface to act as a hydrothermal anvil cell due to the impermeability of graphene. Superheated water trapped within the pressurized graphene nanobubbles is observed to etch the diamond surface to produce a high density of square-shaped voids. The molecular structure of superheated water trapped in the bubble is probed using vibrational spectroscopy and dynamic changes in the hydrogen-bonding environment are observed. © 2013 Macmillan Publishers Limited. All rights reserved.||Source Title:||Nature Communications||URI:||http://scholarbank.nus.edu.sg/handle/10635/75439||ISSN:||20411723||DOI:||10.1038/ncomms2579|
|Appears in Collections:||Staff Publications|
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