Phase behavior of ditethered nanospheres

光频等离子体纳米球系综和负折射率行为问题

Ensembles of plasmonic nanospheres at optical frequencies and a problem of negative index behavior

金属纳米颗粒阵列支持个体和集体等离子体激元激发，这有助于各种超材料中的不寻常现象，如表面增强拉曼散射，异常透明度，负折射率和亚波长分辨率。我们已经研究了电磁响应的双克朗的晶格和薄膜包含多达三个单层的金属纳米球。开立方Kron晶格表现出“软”电磁响应，但没有负折射率行为。紧密排列的阵列表现类似：在某些波长下有等离子体共振和非常高的透射率，这些波长远大于粒子之间的间隔，以及“软”磁响应，具有小但正的有效折射率。通过实验来验证这些预测将会很有趣。

Magnetostatic interaction between Bloch Point nanospheres

Three-dimensional topological textures have become a topic of intense interest in recent years. Through analytical calculations, this work determines the magnetostatic field produced by a Bloch Point (BP) singularity confined in a magnetic nanosphere. It is observed that BPs hosted in a nanosphere generate magnetic fields with quadrupolar nature. This finding is interesting because it shows the possibility of obtaining quadrupole magnetic fields with just one magnetic particle, unlike other propositions considering arrays of magnetic elements to generate this kind of field. The obtained magnet…

几何失稳引导具有结晶配体束的纳米粒子自组装

Geometric Frustration Directs the Self-Assembly of Nanoparticles with Crystallized Ligand Bundles

本文提出由吸引性杆与排斥性球构成的极简粗粒化模型，以描述带结晶配体束的纳米粒子，并揭示几何失稳如何调控自限制团簇及低维介观结构。

Electronic transport in a two-dimensional superlattice engineered via self-assembled nanostructures

Nanoscience offers a unique opportunity to design modern materials from the bottom up, via low-cost, solution processed assembly of nanoscale building blocks. These systems promise electronic band structure engineering using not only the nanoscale structural modulation, but also the mesoscale spatial patterning, although experimental realization of the latter has been challenging. Here we design and fabricate a new type of artificial solid by stacking graphene on a self-assembled, nearly periodic array of nanospheres, and experimentally observe superlattice miniband effects. We find conductanc…