Interactions in interlayer spaces of layered materials |
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| Young-Woo Son |
| School of Computational Sciences, Korea Institute for Advanced Study, Seoul, N/A, Korea, Republic Of |
| hand@kias.re.kr |
| Many
layered materials such as multilayered graphene, BN, and MoS2 have
distinct physical and chemical properties related with interactions
between layers. In this work, I will present our recent theoretical
works related with delicate interactions between layers themselves and
with inserted liquids in interlayer spaces. First, depending on
characteristics of layer interactions, it is shown that the responses of
layered materials to external mechanical forces vary greatly ranging
from weakly compressible, completely compressible to auxetic spacing
variations [1]. Second, when water can immerse into interlayer spaces of
graphene oxide, the formation of ice layers and their dislocations are
shown to depend on interlayer distances critically [2], which may
provide a clue to explain a recent experiment [3] on the peculiar water
dynamics in graphene oxide. [1] S. Woo and Y.-W. Son, in preparation. [2] D. W. Bouhkvalov, M. I. Katsnelson, Y.-W. Son, Nano Lett. 13, 3930 (2013). [3] R. R. Nair et al, Science 335, 442 (2012) |