Please use this identifier to cite or link to this item: https://doi.org/10.1038/ncomms2579
Title: A hydrothermal anvil made of graphene nanobubbles on diamond
Authors: Xuan Lim, C.H.Y.
Sorkin, A.
Bao, Q. 
Li, A.
Zhang, K.
Nesladek, M.
Loh, K.P. 
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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