如何使用DNA支架构建纳米块
How to build nanoblocks using DNA scaffolds
摘要：
近年来，已经有许多建议利用基于DNA的相互作用的特异性用于纳米科学中的潜在应用。一个有趣的方向是使用DNA支架的微米和纳米粒子簇的自组装。在这封信中，我们考虑了DNA支架的方法来自组装集群的“彩色”粒子。稳定的微球簇最近已经通过一种完全不同的方法产生。我们基于DNA的方法自组装集群与粒子排列相关的额外的自由度。我们证明了在不可逆结合的非平衡态下，自组装过程在实验上是可行的。这些颜色自由度可以允许更多样化的簇间相互作用，这对于较大结构的分层自组装至关重要。
英文摘要：
In recent years there have been a number of proposals to utilize the specificity of DNA based interactions for potential applications in nanoscience. One interesting direction is the self-assembly of micro- and nanoparticle clusters using DNA scaffolds. In this letter we consider a DNA scaffold method to self-assemble clusters of "colored" particles. Stable clusters of microspheres have recently been produced by an entirely different method. Our DNA based approach self-assembles clusters with additional degrees of freedom associated with particle permutation. We demonstrate that in the non-equilibrium regime of irreversible binding the self-assembly process is experimentally feasible. These color degrees of freedom may allow for more diverse intercluster interactions essential for hierarchical self-assembly of larger structures.
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