Program for Integrated Molecular Systems, School of Materials Science and Engineering, Gwangju Institute of Science and Technology, 1 Oryong-dong, Buk-gu, Gwangju 500-712, Republic of Korea.
Ultrason Sonochem. 2012 May;19(3):621-6. doi: 10.1016/j.ultsonch.2011.08.012. Epub 2011 Sep 22.
Sonication-assisted layer-by-layer (LBL) deposition of gold nanoparticles (GNPs) was carried out in an attempt to prepare highly conductive gold patterns on polyimide substrates. First, sonication time was optimized with GNPs (12.8 nm) whose size was large enough to be analyzed by FE-SEM in order to evaluate the surface coverage. Next, multilayer formation (4, 8 and 12 layer) was confirmed using ethanedithiol (EDT) as linker molecules under optimized conditions by measuring their UV absorption, near-IR (NIR) transmittance, thickness, and electrical conductivity. Finally, 20-layer films using small GNPs (2.5 nm) were prepared with or without patterning, followed by sintering at 150 °C for 1h, which provided clean gold patterns with high electrical conductivity (2.5 × 10(5) Ω(-1) cm(-1)).
采用超声辅助层层（LBL）沉积法在聚酰亚胺基底上制备高导电性金图案。首先，通过 FE-SEM 分析对较大尺寸的金纳米颗粒（GNPs，12.8nm）进行超声时间优化，以评估表面覆盖率。然后，在优化条件下，使用乙二硫醇（EDT）作为连接分子，通过测量其紫外吸收、近红外（NIR）透射率、厚度和电导率，确认多层（4、8 和 12 层）的形成。最后，采用小尺寸 GNPs（2.5nm）制备了 20 层薄膜，无论是否进行图案化处理，然后在 150°C 下烧结 1h，得到具有高导电性（2.5×10(5)Ω(-1)cm(-1)）的洁净金图案。
