Monatomic chemical-vapor-deposited graphene membranes bridge a half-millimeter-scale gap
ACS nano, 2014•ACS Publications
One of the main concerns in nanotechnology is the utilization of nanomaterials in
macroscopic applications without losing their extreme properties. In an effort to bridge the
gap between the nano-and macroscales, we propose a clever fabrication method, the
inverted floating method (IFM), for preparing freestanding chemical-vapor-deposited (CVD)
graphene membranes. These freestanding membranes were then successfully suspended
over a gap a half-millimeter in diameter. To understand the working principle of IFM, high …
macroscopic applications without losing their extreme properties. In an effort to bridge the
gap between the nano-and macroscales, we propose a clever fabrication method, the
inverted floating method (IFM), for preparing freestanding chemical-vapor-deposited (CVD)
graphene membranes. These freestanding membranes were then successfully suspended
over a gap a half-millimeter in diameter. To understand the working principle of IFM, high …
One of the main concerns in nanotechnology is the utilization of nanomaterials in macroscopic applications without losing their extreme properties. In an effort to bridge the gap between the nano- and macroscales, we propose a clever fabrication method, the inverted floating method (IFM), for preparing freestanding chemical-vapor-deposited (CVD) graphene membranes. These freestanding membranes were then successfully suspended over a gap a half-millimeter in diameter. To understand the working principle of IFM, high-speed photography and white light interferometry were used to characterize and analyze the deformation behaviors of the freestanding graphene membranes in contact with a liquid during fabrication. Some nanoscale configurations in the macroscopic graphene membranes were able to be characterized by simple optical microscopy. The proposed IFM is a powerful approach to investigating the macroscopic structures of CVD graphene and enables the exploitation of freestanding CVD graphene for device applications.
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