Li Yue, Lee Eun Je, Cai Weiping, Kim Ki Yup, Cho Sung Oh
Department of Nuclear and Quantum Engineering, Korea Advanced Institute of Science and Technology, Daejeon 305-701, Korea.
ACS Nano. 2008 Jun;2(6):1108-12. doi: 10.1021/nn8001483.
An unconventional and straightforward route to fabricate morphology-controlled 2D ordered carbonaceous nanoarrays is presented. This route is based on the electron irradiation of a polystyrene colloidal monolayer followed by thermal decomposition. This strategy has the advantages of low-cost fabrication and easy manipulation compared to conventional lithography technique and furthermore overcomes the disadvantage of the self-assembly technique that generally has the defect of irregular units in ordered arrays. Various nanoarrays with irregular units, including network-like and star-like ordered arrays as well as hexagonal non-close-packed dot arrays, were fabricated by this novel route. These ordered arrays can be used as templates or masks to fabricate other ordered structures and then can be removed completely by thermal decomposition at a high temperature. Additionally, these arrays are carbonaceous materials that have higher thermal stability and higher refractive index compared with those of the pristine polymer, which are important for real applications such as optical devices. This method might also be used for the fabrication of other unique ordered arrays if different polymer precursor materials are used.
本文提出了一种制备形貌可控的二维有序碳质纳米阵列的非常规且直接的方法。该方法基于对聚苯乙烯胶体单层进行电子辐照，然后进行热分解。与传统光刻技术相比，此策略具有制造成本低和操作简便的优点，此外还克服了自组装技术的缺点，即有序阵列中通常存在不规则单元的缺陷。通过这种新方法制备了具有不规则单元的各种纳米阵列，包括网络状和星状有序阵列以及六方非密排点阵列。这些有序阵列可用作模板或掩膜来制备其他有序结构，然后可通过高温热分解将其完全去除。此外，这些阵列是碳质材料，与原始聚合物相比，具有更高的热稳定性和更高的折射率，这对于诸如光学器件等实际应用非常重要。如果使用不同的聚合物前驱体材料，该方法也可能用于制备其他独特的有序阵列。
