<div>Dear all,</div>
<div> Recently, the mono layered structure "graphene" is studied extensively. In graphite the link between layers is by "Van Der Waals Force" which is weaker than the ionic or covalent bond. So using scraping method, people can get graphene. However, for other compounds( AlN, BC2N, GaN, ZnO,......), in which the connection between layers are ionic bonds, the graphite-like structure have not been got in experiments. My questions are as follows:</div>
<div>1, Is it possible to get the mono layered compounds( AlN, BC2N, GaN, ZnO,......)?</div>
<div>2, From the theoretical interests, how to study the stability of mono layered compounds by first-principles calculation?</div>
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<div>Any suggestion or comment is appreciated ! Thank you in advance.<br>-- <br>Y. C. Cheng<br>Department of Physics<br>Nanjing University<br>Nanjing 210093<br>P. R. China<br>Tel: 86-25-83592907<br>Email: <a href="mailto:yccheng.nju@gmail.com">yccheng.nju@gmail.com</a><br>
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