Kim Jin-Ho, Kim Hyo-Sop, Lee Jae-Hyeok, Choi Sung-Wook, Cho Yong-Jin, Kim Jae-Ho
Department of Molecular Science and Technology, Ajou University, Suwon 442-749, Korea.
J Nanosci Nanotechnol. 2009 Dec;9(12):7007-11. doi: 10.1166/jnn.2009.1607.
This report demonstrates a novel procedure to produce hexagonally close packed nanoparticle film using the Langmuir-Blodgett (LB) technique. The LB technique has advantages over previously reported techniques, such as high reproducibility, formation of large area films with low-cost capable of producing a large number of hexagonally close packed nanoparticle films at a single process. In this method, a monolayer of mono-dispersed silica nanoparticles was spread on the surface of water and then transferred it onto a gold sputtered glass substrate or silicon wafer. The silica particles used for fabrication of LB films were synthesized by the modified Stöber method. In present work, we synthesized 300 +/- 5 nm sized silica particles. A large area of hexagonally close packed nanoparticle films fabricated by the LB technique was confirmed by AFM and FE-SEM. Furthermore, we demonstrate fabrication of over 34 hexagonally close packed nanoparticle LB films on glass substrates with area of 18 x 18 mm2 from a single process.
本报告展示了一种使用朗缪尔-布洛杰特（LB）技术制备六方密堆积纳米颗粒薄膜的新方法。LB技术相对于先前报道的技术具有优势，例如高重现性、能够以低成本形成大面积薄膜，且在单个过程中能够制备大量六方密堆积纳米颗粒薄膜。在该方法中，将单分散二氧化硅纳米颗粒的单层铺展在水面上，然后转移到溅射金的玻璃基板或硅片上。用于制备LB薄膜的二氧化硅颗粒通过改进的斯托伯方法合成。在当前工作中，我们合成了尺寸为300±5nm的二氧化硅颗粒。通过原子力显微镜（AFM）和场发射扫描电子显微镜（FE-SEM）证实了通过LB技术制备的大面积六方密堆积纳米颗粒薄膜。此外，我们展示了在单个过程中在面积为18×18mm²的玻璃基板上制备超过34个六方密堆积纳米颗粒LB薄膜。
