title: Sonication-assisted layer-by-layer deposition of gold nanoparticles for highly conductive gold patterns.
abstract: 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)).
authors: 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.
authors: Fevzihan
authors: F
authors: Basarir
authors: Tae-Ho
authors: TH
authors: Yoon
mesh_terms: D000327:Adsorption / Q000528:radiation effects; D003460:Crystallization / Q000379:methods*; D004553:Electric Conductivity; D006046:Gold / Q000737:chemistry* / Q000528:radiation effects*; D019220:High-Energy Shock Waves; D053758:Nanoparticles / Q000737:chemistry* / Q000528:radiation effects* / Q000648:ultrastructure; D011829:Radiation Dosage; D013010:Sonication / Q000379:methods*; D013499:Surface Properties / Q000528:radiation effects
chemical_list: D006046:Gold