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Peter B: can you also simulate annealing - in some way thermally induced relaxation of lattice defects - using your MD code?

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Peter B: can you also simulate annealing - in some way thermally induced relaxation of lattice defects - using your MD code?

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Peter B: what is the typical reflection probability for grain boundaries in your calculations?

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Peter B: what is the typical reflection probability for grain boundaries in your calculations?

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Sam D. : When comparing the maximum theoretical mobility of PG (300.000) to the experimental one (~3.000), there is one to two order of magnitude discrepancy (with some of them). How do you explain the difference ? Especially taking in account that defects would have a similar effect than GBs (right ?), so it does not seem to be a likely explanation.  By looking at your slides, the effect of heavy absorption (200%) does not seem to explain such discrepancy. Thanks for you answer and the excellent talk.

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Sam D. : When comparing the maximum theoretical mobility of PG (300.000) to the experimental one (~3.000), there is one to two order of magnitude discrepancy (with some of them). How do you explain the difference ? Especially taking in account that defects would have a similar effect than GBs (right ?), so it does not seem to be a likely explanation.  By looking at your slides, the effect of heavy absorption (200%) does not seem to explain such discrepancy. Thanks for you answer and the excellent talk.

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Luna Z: How does roadmaps (for example, International Roadmap for Devices and Systems) help advancing a specific field? And how do researchers choose which roadmap as a guidance for own research?Thank you

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Luna Z: How does roadmaps (for example, International Roadmap for Devices and Systems) help advancing a specific field? And how do researchers choose which roadmap as a guidance for own research?Thank you

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Krishna: You mentioned the grain-boundary resistivity is independent of temperature (~0 - 300K). Is it means the strain does not affect this grain-boundary resistivity?

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Krishna: You mentioned the grain-boundary resistivity is independent of temperature (~0 - 300K). Is it means the strain does not affect this grain-boundary resistivity?

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Hi Stephan: Graphene films are polycrystalline. What is the minimal size of the single domain graphene that industry needs? (from Marc Monthioux)

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Krishna: Would you mind brief what makes the Gr-hBN boundary cause emission of photons (PL) ? 

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Krishna: Would you mind brief what makes the Gr-hBN boundary cause emission of photons (PL) ? 

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Hi Stephan: Are there are other strategies that could be explored to reduce grain boundaries? For example in other materials such as Si, seed crystals can be used to initiate monocrystal growth? Or maybe some sort of simultaneous growth/etching similar to Ostwald ripening?  (from Chris Ewels)

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Hi Stephan: Are there are other strategies that could be explored to reduce grain boundaries? For example in other materials such as Si, seed crystals can be used to initiate monocrystal growth? Or maybe some sort of simultaneous growth/etching similar to Ostwald ripening?  (from Chris Ewels)

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Singh: Have one tried a Fractional Quantum Hall Effect in Polycrystalline Graphene?? Or is it very difficult?? Does grain boundary has to do anything with interactions in the graphene systems.. thanks..

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Singh: Have one tried a Fractional Quantum Hall Effect in Polycrystalline Graphene?? Or is it very difficult?? Does grain boundary has to do anything with interactions in the graphene systems.. thanks..

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Sam D. : if Ls depends only on the spin-orbit coupling (Rashba like), have you investigated how the molecules absorbed at the GBs play a role similar to the substrate ? even though SOC scales as Z^4 when comparing the metal substrate and those molecules (C,O,...)

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Sam D. : if Ls depends only on the spin-orbit coupling (Rashba like), have you investigated how the molecules absorbed at the GBs play a role similar to the substrate ? even though SOC scales as Z^4 when comparing the metal substrate and those molecules (C,O,...)

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Krishna: Is there any interesting facts available with TMDC grain boundaries with BN as well ?

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Krishna: Is there any interesting facts available with TMDC grain boundaries with BN as well ?

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How does the breaking of inversion symmetry across grain boundary affect the transport properties?

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Has the mobility/conductance through grain boundaries been compared with those properties within the grain under the effect of a perpendicular magnetic field?

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Has anyone systematically measured the effect of grain boundaries on the mechanical properties? - Aravind

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Has anyone systematically measured the effect of grain boundaries on the mechanical properties? - Aravind

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Sam D. : the GBs you considered contained a lot of disorder compared to the pentagon-hexagon pattern that one could observe, how would that affect your observation ?

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Sam D. : the GBs you considered contained a lot of disorder compared to the pentagon-hexagon pattern that one could observe, how would that affect your observation ?

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What is the nature of the chemical bounds between the grains?

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Great talk! I'm curious, I guess you let the bounding box vary in size during optimisation of the disordered graphene, what's the typical reduction in size you see? And if you destroy the aromaticity, doesn't it want to crumple up and go "3D"?

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What is your explanation that a-BN has a very low-k? 

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What is your explanation that a-BN has a very low-k? 

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About the parameter q3: would you comment on what goes into its definition? is it a structure factor kind of quantity? Another related question: the data you showed us is averaged over different disorder configurations, i.e., for different spatial distribution of the domains?

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About the parameter q3: would you comment on what goes into its definition? is it a structure factor kind of quantity? Another related question: the data you showed us is averaged over different disorder configurations, i.e., for different spatial distribution of the domains?

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Nancy

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The 5-7-7-5 defect should not be named "Stones-Wales! - Marc M.

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aBN compared to hBN - how smooth can aBN be? Will there not always be more dangling bonds, roughness and trapped states, for aBN to approach hBN as substrate/encapsulation?

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Thanks a lot Prof. Roche for the talk. Does the triatic order parameter consider the edge/boundaries of the graphene structure

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Would you expect a decrease in in-plane thermal conductivity of sp2 amorphous carbon monolayer when a second layer is stacked on top, as is observed in graphene due to scattering of out of plane phonon modes? Would such still exist in a truly amorphous monolayer? Shyam

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which thermal methods are capable of determining the properties of such amorphous materials and when applied to such thin films, are they free-standing? - Nat

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Sir, Does stacking of graphene layers affect the out-of-plane phonons than when they were in the isolated monolayer state