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篇目详细内容 |
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【篇名】 |
Corrugated single layer templates for molecules: From h-BN nanomesh to graphene based quantum dot arrays |
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【刊名】 |
Frontiers of Physics in China |
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【刊名缩写】 |
Front. Phys. China |
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【ISSN】 |
1673-3487 |
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【EISSN】 |
1673-3606 |
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【DOI】 |
10.1007/s11467-010-0137-0 |
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【出版社】 |
Higher Education Press and Springer-Verlag Berlin
Heidelberg |
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【出版年】 |
2010 |
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【卷期】 |
5
卷4期 |
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【页码】 |
387-392
页,共
6
页 |
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【作者】 |
Hai-feng MA (马海峰);
Mario THOMANN;
Jeanette SCHMIDLIN;
Silvan ROTH;
Martin MORSCHER;
Thomas GREBER;
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【关键词】 |
hexagonal boron nitride; graphene; nano-template; quantum dot; nano-ice; nanomesh; electroluminescence |
【摘要】 |
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Functional nano-templates enable self-assembly of otherwise impossible arrangements of molecules. A particular class of such templates is that of sp2 hybridized single layers of hexagonal boron nitride or carbon (graphene) on metal supports. If the substrate and the single layer have a lattice mismatch, superstructures are formed. On substrates like rhodium or ruthenium these superstructures have unit cells with ~3-nm lattice constant. They are corrugated and contain sub-units, which behave like traps for molecules or quantum dots, which are small enough to become operational at room temperature. For graphene on Rh(111) we emphasize a new structural element of small extra hills within the corrugation landscape. For the case of molecules like water it is shown that new phases assemble on such templates, and that they can be used as “nano-laboratories” where many individual processes are studied in parallel. Furthermore, it is shown that the h-BN/Rh(111) nanomesh displays a strong scanning tunneling microscopy-induced luminescence contrast within the 3？nm unit cell which is a way to address trapped molecules and/or quantum dots. |
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