Department of Chemical and Biomolecular Engineering, Johns Hopkins University, Baltimore, Maryland 21218, USA.
Nano Lett. 2009 Dec;9(12):4049-52. doi: 10.1021/nl9022176.
The construction of three-dimensional (3D) objects, with any desired surface patterns, is both critical to and easily achieved in macroscale science and engineering. However, on the nanoscale, 3D fabrication is limited to particles with only very limited surface patterning. Here, we demonstrate a self-assembly strategy that harnesses the strengths of well-established 2D nanoscale patterning techniques and additionally enables the construction of stable 3D polyhedral nanoparticles. As a proof of the concept, we self-assembled cubic particles with sizes as small as 100 nm and with specific and lithographically defined surface patterns.
在宏观科学和工程中，构建具有任意所需表面图案的三维（3D）物体既至关重要，又易于实现。然而，在纳米尺度上，3D 制造仅限于具有非常有限表面图案的颗粒。在这里，我们展示了一种自组装策略，该策略利用了成熟的 2D 纳米级图案化技术的优势，并能够构建稳定的 3D 多面体纳米颗粒。作为概念验证，我们自组装了尺寸小至 100nm 的立方颗粒，并具有特定和光刻定义的表面图案。
