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      Fundamental transport mechanisms, fabrication and potential applications of nanoporous atomically thin membranes

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      Nature Nanotechnology
      Springer Nature

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          Abstract

          This Review examines the development of nanoporous atomically thin membranes, focusing on fundamental mechanisms of gas- and liquid-phase transport, membrane fabrication techniques, and advances towards practical applications.

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          Most cited references199

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          The upper bound revisited

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            Is Open Access

            30 inch Roll-Based Production of High-Quality Graphene Films for Flexible Transparent Electrodes

            We report that 30-inch scale multiple roll-to-roll transfer and wet chemical doping considerably enhance the electrical properties of the graphene films grown on roll-type Cu substrates by chemical vapor deposition. The resulting graphene films shows a sheet resistance as low as ~30 Ohm/sq at ~90 % transparency which is superior to commercial transparent electrodes such as indium tin oxides (ITO). The monolayer of graphene shows sheet resistances as low as ~125 Ohm/sq with 97.4% optical transmittance and half-integer quantum Hall effect, indicating the high-quality of these graphene films. As a practical application, we also fabricated a touch screen panel device based on the graphene transparent electrodes, showing extraordinary mechanical and electrical performances.
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              Stretching and breaking of ultrathin MoS2.

              We report on measurements of the stiffness and breaking strength of monolayer MoS(2), a new semiconducting analogue of graphene. Single and bilayer MoS(2) is exfoliated from bulk and transferred to a substrate containing an array of microfabricated circular holes. The resulting suspended, free-standing membranes are deformed and eventually broken using an atomic force microscope. We find that the in-plane stiffness of monolayer MoS(2) is 180 ± 60 Nm(-1), corresponding to an effective Young's modulus of 270 ± 100 GPa, which is comparable to that of steel. Breaking occurs at an effective strain between 6 and 11% with the average breaking strength of 15 ± 3 Nm(-1) (23 GPa). The strength of strongest monolayer membranes is 11% of its Young's modulus, corresponding to the upper theoretical limit which indicates that the material can be highly crystalline and almost defect-free. Our results show that monolayer MoS(2) could be suitable for a variety of applications such as reinforcing elements in composites and for fabrication of flexible electronic devices.
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                Author and article information

                Journal
                Nature Nanotechnology
                Nature Nanotech
                Springer Nature
                1748-3387
                1748-3395
                June 6 2017
                June 6 2017
                : 12
                : 6
                : 509-522
                Article
                10.1038/nnano.2017.72
                28584292
                359ed44c-5ad1-43e9-979b-f532efb2591e
                © 2017
                History

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