Jiao Liying, Fan Ben, Xian Xiaojun, Wu Zhongyun, Zhang Jin, Liu Zhongfan
Centre for Nanoscale Science and Technology, Beijing National Laboratory for Molecular Sciences, State Key Laboratory for Structural Chemistry of Unstable and Stable Species, College of Chemistry and Molecular Engineering, Peking University, PR China.
J Am Chem Soc. 2008 Sep 24;130(38):12612-3. doi: 10.1021/ja805070b. Epub 2008 Sep 3.
We demonstrate here a PMMA-mediated nanotransfer printing technique for reliably transferring nanoscale building blocks and sequentially building purpose-directed nanostructures. The utilization of PMMA film as a mediator introduced several features to this transfer approach, such as high efficiency, fidelity, universality, controllability, and multilevel transferability. Various nanostructures, such as an SWNTs-on-SAM structure, high-density crossbar array of SWNTs, a hybrid n-ZnO nanowire/p-SWNT cross-junction, a gold nanostructure-SAM-gold sandwich structure, a zigzag array of SWNTs, and gold nanobowl array were generated with this transfer approach. A metallic-semiconducting SWNT cross circuit was built to demonstrate its potential application in fabricating nanoelectronic devices. This technique paves the way to generate various structures with homo- or heterogeneous nanoscale building blocks, which facilitates exploring their fundamental properties and building novel devices.
我们在此展示一种聚甲基丙烯酸甲酯（PMMA）介导的纳米转移印刷技术，用于可靠地转移纳米级构建块并依次构建目标导向的纳米结构。利用PMMA薄膜作为介质为这种转移方法引入了几个特点，如高效率、高保真度、通用性、可控性和多级转移性。通过这种转移方法生成了各种纳米结构，如自组装单分子层（SAM）上的单壁碳纳米管（SWNTs）结构、SWNTs的高密度交叉阵列、混合的n型氧化锌纳米线/p型SWNT交叉结、金纳米结构-SAM-金三明治结构、SWNTs的锯齿形阵列以及金纳米碗阵列。构建了一个金属-半导体SWNT交叉电路，以证明其在制造纳米电子器件方面的潜在应用。该技术为用同质或异质纳米级构建块生成各种结构铺平了道路，这有助于探索它们的基本特性并构建新型器件。
