Exceptionally stiff two-dimensional molecular crystal by substrate-confinement.
Exceptionally stiff two-dimensional molecular crystal by substrate-confinement.
复制标题
通过基底限制获得异常坚硬的二维分子晶体。
作者:
程志海
We demonstrated an approach to effectively apply in-plane pressures to molecular layers by utilizing the substrate confinement effect. The compressed crystal structure and mechanical behaviors of carbon monoxide (CO) monolayer subjected to the confinement of Cu(100) substrate were jointly investigated by low temperature scanning tunneling microscopy experiments and first-principles density functional theory calculations. By increasing molecular coverage, an exceptionally large Young's modulus of 33 GPa was derived for the constrained CO monolayer film. This extreme in-plane pressure leads to site-specific tilting geometries, polymeric-like electronic states, and vibrational behaviors of CO molecules in the compressed phases. These results provide an extended understanding of the physical and chemical properties of intermolecular interactions in this fundamental system.
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影响因子:
8.6
作者:
Yu, MF;Files, BS;Ruoff, RS
通讯作者:
Ruoff, RS
影响因子:
8.6
作者:
Sun, Jian;Klug, Dennis D.;Needs, Richard J.
通讯作者:
Needs, Richard J.
DOI:
10.1007/3-540-39947-x_12
发表时间:
2001
期刊:
--
影响因子:
--
作者:
B. Yakobson;P. Avouris
通讯作者:
B. Yakobson;P. Avouris
影响因子:
56.9
作者:
Levy, N.;Burke, S. A.;Crommie, M. F.
通讯作者:
Crommie, M. F.
DOI:
--
发表时间:
2014-03
期刊:
Bulletin of the American Physical Society
影响因子:
--
作者:
Qing-Yan Wang;Z. Li;Wenhao Zhang;Zuocheng Zhang;Jinsong Zhang;Wei Li;Hao Ding;Y. Ou;P. Deng-P.
通讯作者:
Qing-Yan Wang;Z. Li;Wenhao Zhang;Zuocheng Zhang;Jinsong Zhang;Wei Li;Hao Ding;Y. Ou;P. Deng-P.