Cho, Young Min Lee, Sang-Soo Park, Chong Rae Kim, Tae Ann Park, Min 2024-01-19T13:34:23Z 2024-01-19T13:34:23Z 2021-10-21 2021-10 1359-835X https://pubs.kist.re.kr/handle/201004/116364 Conductive microspheres are prepared using two different shaped conductive fillers, carbon nanotubes (CNTs) and Au nanoparticles (AuNPs), by a dry particle coating (DPC) process and a self-assembly method. CNTs, which are one-dimensional conductive fillers, facilitate the formation of conducting pathways so that the zero dimensional AuNP content can be significantly reduced to obtain electrical percolation from the conductive microspheres. Two fabrication methods are investigated: (1) the self-assembly of AuNPs followed by the DPC of the CNTs on polystyrene (PS) microspheres (t-PS/AuNP/CNT) and (2) the DPC of the CNTs followed by the self assembly of AuNPs (PS/t-CNT/AuNP). In both cases, the electrical percolation of the conductive microspheres is achieved using a significantly lower amount of AuNPs (1 wt%), which is 17 times lower than that of samples prepared using only AuNPs (17 wt%). Interestingly, each sample exhibits distinct conducting behaviors with different amounts of AuNPs owing to the different hybridization structures of AuNPs and CNTs. English ELSEVIER SCI LTD Enhanced electrical conductivity of polymer microspheres by altering assembly sequence of two different shaped conductive fillers Article 10.1016/j.compositesa.2021.106562 1 Composites Part A: Applied Science and Manufacturing, v.149 Composites Part A: Applied Science and Manufacturing 149 N scie scopus 000689334900004 2-s2.0-85110439890 Engineering, Manufacturing Materials Science, Composites Engineering Materials Science Article CARBON NANOTUBES HIGH DISPERSION NANOPARTICLES PLATINUM FILM POLYSTYRENE ELECTRODES MECHANISM SPHERES CORE-SHELL PARTICLES A Hybrid B Electrical properties D Electron microscopy E Assembly